Gree Super Free Match Error Codes

If some error occurs when the unit is running, the error code will be displayed on the wired controller. Check for more details about the meaning of each error

Errors of definition = The compressor is startup

Main control display for outdoor unit 

Yellow LED = Flash 1 time

Red LED =

Green LED =

Indoor unit code =

Errors of definition = IPM current protection

Main control display for outdoor unit 

Yellow LED = Flash 3 times

Red LED =

Green LED =

Indoor unit code = H5

Errors of definition = IPM temperature protection

Main control display for outdoor unit 

Yellow LED = Flash 5 times

Red LED =

Green LED =

Indoor unit code = P8

Errors of definition = PFC current protection

Main control display for outdoor unit 

Yellow LED = Flash 7 times

Red LED =

Green LED =

Indoor unit code =

Errors of definition = PFC temperature protection

Main control display for outdoor unit 

Yellow LED = Flash 8 times

Red LED =

Green LED =

Indoor unit code = P8

Errors of definition = Low voltage protection

Main control display for outdoor unit 

Yellow LED = Flash 9 times

Red LED =

Green LED =

Indoor unit code = PL

Errors of definition = High voltage protection

Main control display for outdoor unit 

Yellow LED = Flash 10 times

Red LED =

Green LED =

Indoor unit code = PH

Errors of definition = Low pressure protection

Main control display for outdoor unit 

Yellow LED = Flash 11 times

Red LED =

Green LED =

Indoor unit code =

Errors of definition = High pressure protection

Main control display for outdoor unit 

Yellow LED = Flash 12 times

Red LED =

Green LED =

Indoor unit code =

Errors of definition = High pressure switch protection

Main control display for outdoor unit 

Yellow LED = Flash 13 times

Red LED =

Green LED =

Indoor unit code =

Errors of definition = Capacitor charging error

Main control display for outdoor unit 

Yellow LED = Flash 14 times

Red LED =

Green LED =

Indoor unit code =

Errors of definition = AC current protection

Main control display for outdoor unit 

Yellow LED = Flash 15 times

Red LED =

Green LED =

Indoor unit code = E5

Errors of definition =

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code =

Errors of definition = Memory card error

Main control display for outdoor unit 

Yellow LED = Flash 16 times

Red LED =

Green LED =

Indoor unit code =

Errors of definition = Compressor demagnetizing protection

Main control display for outdoor unit 

Yellow LED = Flash 17 times

Red LED =

Green LED =

Indoor unit code = HE

Errors of definition = Compressor desynchronizing

Main control display for outdoor unit 

Yellow LED = Flash 18 times

Red LED =

Green LED =

Indoor unit code = H7

Errors of definition = Compressor phase lack

Main control display for outdoor unit 

Yellow LED = Flash 19 times

Red LED =

Green LED =

Indoor unit code = U2

Errors of definition = Compressor phase circuit detection error

Main control display for outdoor unit 

Yellow LED = Flash 20 times

Red LED =

Green LED =

Indoor unit code = U1

Errors of definition = Compressor power protection

Main control display for outdoor unit 

Yellow LED = Flash 21 times

Red LED =

Green LED =

Indoor unit code = L9

Errors of definition = Compressor overload protection

Main control display for outdoor unit 

Yellow LED = Flash 22 times

Red LED =

Green LED =

Indoor unit code = H3

Errors of definition = Compressor discharge temperature protection

Main control display for outdoor unit 

Yellow LED = Flash 23 times

Red LED =

Green LED =

Indoor unit code = E4

Errors of definition = Lack of refrigerant or jam protection

Main control display for outdoor unit 

Yellow LED = Flash 31 times

Red LED =

Green LED =

Indoor unit code = F0

Errors of definition = Normal operation

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 1 time

Green LED =

Indoor unit code =

Errors of definition = Frequency limitation for AC current

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 2 times

Green LED =

Indoor unit code =

Errors of definition = Oil returning

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 3 times

Green LED =

Indoor unit code =

Errors of definition = Defrosting

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 4 times

Green LED =

Indoor unit code = H1

Errors of definition = Frequency limitation for IPM temperature

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 5 times

Green LED =

Indoor unit code =

Errors of definition = Frequency limitation for PFC temperature

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 6 times

Green LED =

Indoor unit code =

Errors of definition = Frequency limitation for compressor overload

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 8 times

Green LED =

Indoor unit code =

Errors of definition = Frequency limitation for compressor discharge temperature

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 9 times

Green LED =

Indoor unit code =

Errors of definition = Frequency limitation for low pressure

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 10 times

Green LED =

Indoor unit code =

Errors of definition = Frequency limitation for high pressure

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 11 times

Green LED =

Indoor unit code =

Errors of definition = Discharge temperature sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 12 times

Green LED =

Indoor unit code = F5

Errors of definition = Outdoor temperature sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 13 times

Green LED =

Indoor unit code = F3

Errors of definition = Condenser temperature sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 17 times

Green LED =

Indoor unit code =

Errors of definition = Low pressure sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 18 times

Green LED =

Indoor unit code =

Errors of definition = High pressure sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 19 times

Green LED =

Indoor unit code =

Errors of definition = Fan motor error for indoor unit

Main control display for outdoor unit 

Yellow LED =

Red LED = Flash 20 times

Green LED =

Indoor unit code = H6

Errors of definition = Driving board is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 1 time

Indoor unit code =

Errors of definition = Testing board is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 2 times

Indoor unit code =

Errors of definition = Computer is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 4 times

Indoor unit code =

Errors of definition = Indoor unit 1 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 5 times

Indoor unit code =

Errors of definition = Indoor unit 2 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 6 times

Indoor unit code =

Errors of definition = Indoor unit 3 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 7 times

Indoor unit code =

Errors of definition = Indoor unit 4 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 8 times

Indoor unit code =

Errors of definition = Indoor unit 5 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 9 times

Indoor unit code =

Errors of definition = Indoor unit 7 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 11 times

Indoor unit code =

Errors of definition = Indoor unit 8 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 12 times

Indoor unit code =

Errors of definition = Indoor unit 9 is connected

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED = Flash 13 times

Indoor unit code =

Errors of definition = Indoor unit anti-freeze protection

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = E2

Errors of definition =

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code =

Errors of definition = Indoor temperature sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = F1

Errors of definition = Indoor evaporator midway temperature sensor error

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = F2

Errors of definition = Temperature sensor error for liquid pipe of BU module

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = b5

Errors of definition = Temperature sensor error for gas pipe of BU module

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = b7

Errors of definition = Running mode conflicts

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = E7

Errors of definition = Communication error

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = E6

Errors of definition = Water full error of indoor unit

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = E9

Errors of definition = Refrigerant recovery mode

Main control display for outdoor unit 

Yellow LED =

Red LED =

Green LED =

Indoor unit code = Fo

BU module

Errors = BU 1 is connected

Indicating LED flashing times

Yellow LED = Flash 1 time

Green LED =

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = BU 2 is connected

Indicating LED flashing times

Yellow LED = Flash 2 times

Green LED =

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = BU 3 is connected

Indicating LED flashing times

Yellow LED = Flash 3 times

Green LED =

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = Indoor unit A is connected

Indicating LED flashing times

Yellow LED =

Green LED = Flash 1 time

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = Indoor unit B is connected

Indicating LED flashing times

Yellow LED =

Green LED = Flash 2 times

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = Indoor unit C is connected

Indicating LED flashing times

Yellow LED =

Green LED = Flash 3 times

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = Indoor unit D is connected

Indicating LED flashing times

Yellow LED =

Green LED = Flash 4 times

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = Indoor unit E is connected

Indicating LED flashing times

Yellow LED =

Green LED = Flash 5 times

Red LED =

Indoor unit error code =

Outdoor unit error code =

Errors = Indoor unit A gas tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 1 time

Indoor unit error code = b7

Outdoor unit error code = b7 indoor unit address

Errors = Indoor unit A liquid tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 2 times

Indoor unit error code = b5

Outdoor unit error code = b5 indoor unit address

Errors = Indoor unit B gas tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 3 times

Indoor unit error code = b7

Outdoor unit error code = b7 indoor unit address

Errors = Indoor unit B liquid tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 4 times

Indoor unit error code = b5

Outdoor unit error code = b5 indoor unit address

Errors = Indoor unit C gas tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 5 times

Indoor unit error code = b7

Outdoor unit error code = b7 indoor unit address

Errors = Indoor unit C liquid tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 6 times

Indoor unit error code = b5

Outdoor unit error code = b5 indoor unit address

Errors = Indoor unit D gas tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 7 time

Indoor unit error code = b7

Outdoor unit error code = b7 indoor unit address

Errors = Indoor unit D liquid tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 8 times

Indoor unit error code = b5

Outdoor unit error code = b5 indoor unit address

Errors = Indoor unit E gas tube temperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 9 time

Indoor unit error code = b7

Outdoor unit error code = b7 indoor unit address

Errors = Indoor unit E liquid tubevtemperature sensor error

Indicating LED flashing times

Yellow LED =

Green LED =

Red LED = Flash 10 times

Indoor unit error code = b5

Outdoor unit error code = b5 indoor unit address

Read More ->>

Gree U-Match 5 Series Error Codes

Error code = E1

Error = Compressor high pressure protection

Error code = E2

Error = Indoor anti-freeze protection

Error code = E3

Error = Compressor low pressure protection, refrigerant lack protection and refrigerant colleting mode

Error code = E4

Error = Compressor air discharge high-temperature protection

Error code = E6

Error = Communication error

Error code = E8

Error = Indoor fan error

Error code = E9

Error = Water-full protection

Error code = F0

Error = Indoor ambient temperature sensor error

Error code = F1

Error = Evaporator temperature sensor error

Error code = F2

Error = Condenser temperature sensor error

Error code = F3

Error = Outdoor ambient temperature sensor error

Error code = F4

Error = Discharge temperature sensor error

Error code = F5

Error = Wired control temperature sensor error

Error code = C5

Error = IDU jumper cap error

Error code = EE

Error = IDU or ODU memory chip error

Error code = PF

Error = Electric box sensor error

Error code = H3

Error = Compressor overload protection

Error code = H4

Error = Overload

Error code = H5

Error = IPM protection

Error code = H6

Error = DC fan error

Error code = H7

Error = Driver out-of-step protection

Error code = HC

Error = Pfc protection

Error code = Lc

Error = Startup failure

Error code = Ld

Error = Compressor phase-sequence protection

Error code = LF

Error = Power protection

Error code = Lp

Error = IDU and ODU unmatched

Error code = U7

Error = 4–way valve switch-over error

Error code = P0

Error = Driver reset protection

Error code = P5

Error = Over-current protection

Error code = P6

Error = Master control and driver communication error

Error code = P7

Error = Driver module sensor error

Error code = P8

Error = Driver module high temperature protection

Error code = P9

Error = Zero-crossing protection

Error code = PA 

Error = AC current protection

Error code = Pc

Error = Driver current error

Error code = Pd

Error = Sensor connection protection

Error code = PE

Error = Temperature drift protection

Error code = PL

Error = Bus low-voltage protection

Error code = PH

Error = Bus high-voltage protection

Error code = PU

Error = Charge loop error

Error code = PP

Error = Input voltage error

Error code = ee

Error = Drive memory chip error

Error code = C4

Error = ODU jumper cap error

Error code = dJ

Error = Phase-loss and anti-phase protection

Error code = oE

Error = ODU error, for specific error please see the status of ODU indicator

Error code = EL

Error = Emergency stop (fire alarm)

Read More ->>

Gree Ducted GFH Error Codes

 Error Code = E1

Malfunction Name = High Pressure Protection

Origin Of Malfunction Signal = High pressure switch . 

Control Description = When outdoor unit detects the high pressure switch is cut off for 3s successively, high pressure protection will occur. All the loads (except the 4-way valve in heating mode) will be switched off. In this case, all the buttons and remote control signals except ON/OFF button will be disabled and cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection. 

Error Code = E2

Malfunction Name = Freeze protection 

Origin Of Malfunction Signal = Indoor evaporator temperature sensor 

Control Description = If detecting that the evaporator temperature is lower than protective temp. value after the unit has been running for a period of time under cooling or dry mode, the unit will report this fault, in which case the compressor and outdoor fan motor will be stopped. The unit will not run until evaporator temperature is higher than the protective temp. value and the compressor is stopped for 3min 

Error Code = E3

Malfunction Name = Refrigerant lacking protection 

Origin Of Malfunction Signal =

Control Description = If the unit reports system refrigerant lacking within 10min after turning on the unit, the unit will stop operation. If the fault occurs successively 3 times, the unit cannot be recovered automatically. 

Error Code = E3

Malfunction Name = Refrigerant recycling mode 

Origin Of Malfunction Signal =

Control Description = If enter refrigerant recycling mode through special operation, E3 will be displayed. After exiting refrigerant recycling mode, the code will disappear

Error Code = E4

Malfunction Name = Compressor high discharge temperature protection 

Origin Of Malfunction Signal = Compressor discharge temperature is high 

Control Description = If outdoor unit detects that the discharge temperature is higher than protective temp. value, the unit will report high discharge temperature protection. If the protection occurs over 6 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection. 

Error Code = E6

Malfunction Name = Communication malfunction 

Origin Of Malfunction Signal = Communication between indoor and outdoor mainboard 

Control Description = If the outdoor unit does not receive data from indoor unit, communication malfunction will be reported. If there is communication abnormity between display board and indoor unit, communication malfunction will be reported too

Error Code = E8

Malfunction Name = Malfunction of indoor fan motor 

Origin Of Malfunction Signal = Indoor fan motor 

Control Description = If the indoor unit does not receive signal from indoor fan motor for 30s successively when the fan motor is operating, indoor fan motor malfunction will be reported. In this case, the unit can automatically resume operation after stopping. If the malfunction occurs 6 times within one hour, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this malfunction

Error Code = E9

Malfunction Name = Full water protection 

Origin Of Malfunction Signal = Water level switch 

Control Description = If cut-off of water level switch is detected for 8s successively once energized, the system will enter full water protection. In this case, switch off the unit and then switch it on to eliminate this malfunction

Error Code = F0

Malfunction Name = Malfunction of indoor ambient temperature sensor at air return port

Origin Of Malfunction Signal = Indoor ambient temperature sensor 

Control Description = If the indoor ambient temperature sensor is detected of open circuit or short circuit for 5s successively, indoor ambient temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If indoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally. 

Error Code = F1

Malfunction Name = Malfunction of evaporator temperature sensor 

Origin Of Malfunction Signal = Evaporator temperature sensor 

Control Description = If the indoor evaporator temperature sensor is detected of open circuit or short circuit for 5s successively, evaporator temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If evaporator temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally. 

Error Code = F2

Malfunction Name = Malfunction of condenser temperature sensor 

Origin Of Malfunction Signal = Condenser temperature sensor 

Control Description = If the outdoor condenser temperature sensor is detected of open circuit or short circuit for 5s successively, condenser temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If condenser temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally

Error Code = F3

Malfunction Name = Malfunction of outdoor ambient temperature sensor 

Origin Of Malfunction Signal = Outdoor ambient temperature sensor 

Control Description = If the outdoor ambient temperature sensor is detected of open circuit or short circuit for 5s successively, outdoor ambient temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If outdoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally. 

Error Code = F4

Malfunction Name = Malfunction of discharge temperature sensor 

Origin Of Malfunction Signal = Discharge temperature sensor 

Control Description = If the outdoor ambient temperature sensor is detected of open circuit or short circuit for 5s successively, outdoor ambient temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If outdoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally. 

Error Code = F5

Malfunction Name = Malfunction wired controller temperature sensor 

Origin Of Malfunction Signal = Wired controller 

Control Description = If the wired controller detects open circuit or short circuit of its temperature sensor for 5s successively, wired controller temperature sensor malfunction will be reported 

Error Code = ee

Malfunction Name = Malfunction of outdoor drive memory chip 

Origin Of Malfunction Signal = Outdoor drive board 

Control Description = If the memory chip of outdoor drive board is broken, the unit cannot be started. The unit cannot be recovered automatically. If the malfunction cannot be eliminated after switching off the unit and then energizing the unit for several times, please replace the outdoor drive board. 

Error Code = H3

Malfunction Name = Compressor overload protection 

Origin Of Malfunction Signal = Compressor overload switch 

Control Description = If it is detected within 3s successively that the overload switch is cut off under ON or standby state, the unit will report overload protection. If the fault occurs successively 3 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection 

Error Code = H4

Malfunction Name = Overload protection 

Origin Of Malfunction Signal = Evaporator temperature, condenser temperature 

Control Description = If outdoor unit detects that the tube temperature is higher than protective temp. value, the unit will report overload protection. The unit will not restart operation until tube temperature is lower than the protective temp. value and the compressor is stopped for 3min. If the protection occurs over 6 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection. 

Error Code = H6

Malfunction Name = Malfunction of outdoor fan motor 

Origin Of Malfunction Signal = Outdoor fan motor 

Control Description = If the outdoor unit does not receive signal from outdoor fan motor for 30s successively when the fan motor is operating, outdoor fan motor malfunction will be reported. In this case, the unit can automatically resume operation after stopping. If the malfunction occurs 6 times within one hour, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this malfunction

Error Code = U7

Malfunction Name = Direction changing malfunction of 4-way valve 

Origin Of Malfunction Signal = 4-way valve 

Control Description = After the compressor starts operation in heating mode, if the outdoor unit detects the difference between evaporator temperature and indoor ambient temperature is lower than the protective value for 10min successively, direction changing malfunction of 4-way valve will be reported and the outdoor unit will stop operation. The unit can automatically resume operation in the first two malfunctions. If the malfunction occurs 3 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this malfunction

Error Code = P6

Malfunction Name = Communication malfunction between main control and drive 

Origin Of Malfunction Signal = Communication between main control board and drive board 

Control Description = If the outdoor main control board does not receive data from drive board, communication malfunction between main control and drive will be reported. This malfunction can be eliminated automatically

Error Code = EE

Malfunction Name = Malfunction of outdoor main control memory chip 

Origin Of Malfunction Signal = Outdoor main control board 

Control Description = If the memory chip of outdoor main control board is broken, the unit cannot be started. The unit cannot be recovered automatically. If the malfunction cannot be eliminated after switching off the unit and then energizing the unit for several times, please replace the outdoor main control board 

Description of Drive Malfunction 

Main board dual 8 numeral tube Display Codes for Outdoor Unit of 24~60k 

Malfunction Item = DC busbar over-voltage protection 

Indoor Unit Display = PH

Outdoor unit display of dual 8 numeral tube  = PH

Malfunction Item =  IPM or PFC over-temperature protection 

Indoor Unit Display = P8

Outdoor unit display of dual 8 numeral tube  = P8

Malfunction Item = Current sense circuit error 

Indoor Unit Display = Pc

Outdoor unit display of dual 8 numeral tube  = Pc

Malfunction Item = IPM or PFC temperature sensor error 

Indoor Unit Display = P7

Outdoor unit display of dual 8 numeral tube  = P7

Malfunction Item = Compressor current protection 

Indoor Unit Display = P5

Outdoor unit display of dual 8 numeral tube  = P5

Malfunction Item = DC busbar under-voltage protection 

Indoor Unit Display = PL

Outdoor unit display of dual 8 numeral tube  = PL

Malfunction Item = Compressor startup failure 

Indoor Unit Display = Lc

Outdoor unit display of dual 8 numeral tube  = Lc

Malfunction Item = Drive module reset 

Indoor Unit Display = P0

Outdoor unit display of dual 8 numeral tube  = P0

Malfunction Item = Compressor motor desynchronizing 

Indoor Unit Display = H7

Outdoor unit display of dual 8 numeral tube  = H7

Malfunction Item = Phase loss 

Indoor Unit Display = Ld

Outdoor unit display of dual 8 numeral tube  = Ld

Malfunction Item = Drive-to-main-control communication error 

Indoor Unit Display = P6

Outdoor unit display of dual 8 numeral tube  = P6

Malfunction Item = IPM protection

Indoor Unit Display = H5

Outdoor unit display of dual 8 numeral tube  = H5

Malfunction Item = Compressor overload protection 

Indoor Unit Display = H3

Outdoor unit display of dual 8 numeral tube  = H3

Malfunction Item = AC current protection (input side

Indoor Unit Display = PA

Outdoor unit display of dual 8 numeral tube  = PA

Malfunction Item = Charging circuit error 

Indoor Unit Display = PU

Outdoor unit display of dual 8 numeral tube  = PU

Malfunction Item = PFC protection 

Indoor Unit Display = HC

Outdoor unit display of dual 8 numeral tube  = HC

Malfunction Item = DC fan error 

Indoor Unit Display = H6

Outdoor unit display of dual 8 numeral tube  = H6

Malfunction Item = Input AC voltage abnormality 

Indoor Unit Display = PP

Outdoor unit display of dual 8 numeral tube  = PP

Malfunction Item = Driving board memory chip error 

Indoor Unit Display = ee

Outdoor unit display of dual 8 numeral tube  = ee

Read More ->>

Koppel Air Conditioner Error Codes

Indoor unit malfunction For floor standing

 

Indoor EEPROM malfunction E0 

Communication malfunction between indoor and outdoor units E1 

Open or short circuit of T1 temperature sensor E4 

Open or short circuit of T2 temperature sensor E5 

Refrigerant leakage detection EC 

Outdoor unit is faulty (for old communication protocol) Ed 

Overcurrent protection (For some units) F0 

Open or short circuit of T4 temperature sensor F1 

Open or short circuit of T3 temperature sensor F2 

Open or short circuit of T5 temperature sensor F3 

Outdoor EEPROM malfunction (For some units) F4 

Open or short circuit of T2B temperature sensor F6 

IPM module malfunction P0 

Over voltage or over low voltage protection P1 

High temperature protection of top of compressor P2 

Too low ambient temperature protection P3 

Inverter compressor drive protection P4 

Sensor of outdoor IGBT is faulty P7

For Other Type

O (on) X(off) ☆(flash)

Malfunction = Indoor EEPROM malfunction

Error Code = E0

Timer Lamp = X

Operation Lamp ( Flashes ) = 1

Malfunction = Communication malfunction between indoor and outdoor units

Error Code = E1

Timer Lamp = X

Operation Lamp ( Flashes ) = 2

Malfunction = Open or short circuit of T1 temperature sensor

Error Code = E4

Timer Lamp = X

Operation Lamp ( Flashes ) = 5

Malfunction = Open or short circuit of T2 temperature sensor

Error Code = E5

Timer Lamp = X

Operation Lamp ( Flashes ) = 6

Malfunction = Refrigerant leakage detection

Error Code = EC

Timer Lamp = X

Operation Lamp ( Flashes ) = 7

Malfunction = Water level alarm

Error Code = EE

Timer Lamp = X

Operation Lamp ( Flashes ) = 8

Malfunction = Communication error between master and slave unit (for twins system)

Error Code = E8

Timer Lamp = X

Operation Lamp ( Flashes ) = 9

Malfunction = Another indoor unit malfunction (for twins system)

Error Code = E9

Timer Lamp = X

Operation Lamp ( Flashes ) = 10

Malfunction = Outdoor unit is faulty (for old communication protocol)

Error Code = Ed

Timer Lamp = X

Operation Lamp ( Flashes ) = 11

Malfunction = Overcurrent protection (For some units)

Error Code = F0

Timer Lamp = O

Operation Lamp ( Flashes ) = 1

Malfunction = Open or short circuit of T4 temperature sensor

Error Code = F1

Timer Lamp = O

Operation Lamp ( Flashes ) = 2

Malfunction = Open or short circuit of T3 temperature sensor

Error Code = F2

Timer Lamp = O

Operation Lamp ( Flashes ) = 3

Malfunction = Open or short circuit of T5 temperature sensor

Error Code = F3

Timer Lamp = O

Operation Lamp ( Flashes ) = 4

Malfunction = Outdoor EEPROM malfunction (For some units)

Error Code = F4

Timer Lamp = O

Operation Lamp ( Flashes ) = 5

Malfunction = Communication error between auto-lifting panel and slim cassette (For slim cassette with auto-lifting panel)

Error Code = F7

Timer Lamp = O

Operation Lamp ( Flashes ) = 8

Malfunction = Auto-lifting panel is faulty (For slim cassette with auto-lifting panel) 

Error Code = F8

Timer Lamp = O

Operation Lamp ( Flashes ) = 9

Malfunction = Auto-lifting panel is not closed (For slim cassette with auto-lifting panel)

Error Code = F9

Timer Lamp = O

Operation Lamp ( Flashes ) = 10

Malfunction = IPM module malfunction

Error Code = P0

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 1

Malfunction = Over voltage or over low voltage protection

Error Code = P1

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 2

Malfunction = High temperature protection of top of compressor

Error Code = P2

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 3

Malfunction = Too low ambient temperature protection

Error Code = P3

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 4

Malfunction = Inverter compressor drive protection

Error Code = P4

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 5

Malfunction = Low pressure protection of compressor

Error Code = P6

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 7

Malfunction = Sensor of outdoor IGBT is faulty

Error Code = P7

Timer Lamp = ☆

Operation Lamp ( Flashes ) = 8

Outdoor Unit Malfunction

E1 Communication malfunction between indoor and outdoor units

F0 Overcurrent protection

F1 Ambient temperature sensor (T4) is malfunction

F2 Outdoor heat-exchanger temperature sensor (T3) is malfunction

F3 Discharge temperature sensor (T5) is malfunction

F4 Outdoor EEPROM is malfunction

P0 IPM module protection

P1 Voltage protection (too high or too low)

P3 Protection of ultra-low ambient temperature

P4 Rotor position protection of compressor

J0 High temperature protection of indoor heat exchanger in heating mode

J1 High temperature protection of outdoor heat exchanger in cooling mode

J2 High discharge temperature protection

J3 PFC module protection

J4 Communication error between outdoor main chip and compressor driven chip IR341

J5 High pressure protection

J6 Low pressure protection

P7 Sensor of outdoor IGBT is faulty

J8 AC voltage protection

In low ambient cooling mode, the LED displays“LC” or alternative displays between running frequency

and “LC”(each displays 0.5s)

Read More ->>

ALLIANCE ERROR CODES

1. Fixed speed Vertu midwall units

Display = E1
Failure = EEPROM error

Display = E2
Failure = Zero crossing detection error

Display = E3
Failure = Indoor fan error

Display = E5
Failure = Room temp sensor open or short

Display = E6
Failure = Indoor coil sensor open or short

Display = EC
Failure = Refrigerant leak detected

2. Atlantic Midwall units

Display = E1
Failure = Outdoor tube sensor fault

Display = E2
Failure = Room temp sensor open or short

Display = E3
Failure = Indoor coil sensor open or short

Display = E5
Failure = Indoor fan fault

Display = E6
Failure = EEPROM error

Display = E7
Failure = External feedback fault - Check interconnecting wiring

Display = E8
Failure = Overheat detection / defrosting

3. Inverter midwall units

Display = E0
Failure = EEPROM error

Display = E1
Failure = Indoor and outdoor communication error

Display = E2
Failure = Zero crossing detection error

Display = E3
Failure = Indoor fan error

Display = E4
Failure = Indoor room temp sensor open or short

Display = E5
Failure = Indoor coil sensor open or short

Display = EC
Failure = Refrigerant leak detected

Display = F1
Failure = Outdoor temp sensor open or short

Display = F2
Failure = Condensor coil sensor open or short

Display = F3
Failure = Compressor discharge sensor open or short

Display = F4
Failure = Outdoor EEPROM error

Display = P0
Failure = IPM malfunction or IGBT over current

Display = P1
Failure = Over or under voltage protection

Display = P2
Failure = Temperature protection of compressor top (normally short of refrigerant)

Display = P4
Failure = Inverter compressor drive error

4. Fixed speed under ceiling/cassette/ducted units

Display = E1
Failure = EEPROM error

Display = E2
Failure = Zero crossing detection error

Display = E3
Failure = Indoor fan error

Display = E5
Failure = Room temp sensor open or short

Display = E6
Failure = Indoor coil sensor open or short

Display = EC
Failure = Refrigerant leak detected

Indoor
Oper.=
Time =
Def./Fan =
Alarm = Flash
Fault = Drain pump or float switch

Oper.=
Time = Flash
Def./Fan =
Alarm =
Fault = Return air sensor open or short

Oper.= Flash
Time =
Def./Fan =
Alarm =
Fault = Indoor coil sensor open or short

Oper.= Flash
Time = Flash
Def./Fan =
Alarm =
Fault = EEPROM error

Oper.=
Time =
Def./Fan = Flash
Alarm =
Fault = Outdoor coil sensor open or short

Oper.= Flash
Time = Flash
Def./Fan = Flash
Alarm = Flash
Fault = Electrical abnormality

Oper.= Flash
Time = Flash
Def./Fan =
Alarm = Flash
Fault = Over current protection

Outdoor
LED 1 = Flash
LED2 =
LED3 =
Fault = Phase rotation/phase missing error

LED 1 =
LED2 = Flash
LED3 =
Fault = HP swith open circuit

LED 1 =
LED2 =
LED3 = Flash
Fault = Overcurrent protection

LED 1 = Flash
LED2 = Flash
LED3 =
Fault = LP switch open circuit

LED 1 = Flash
LED2 = Flash
LED3 = Flash
Fault = High temperature of compressor discharge (Short of gas)

LED 1 = On
LED2 =
LED3 = On
Fault = Normal operation

LED 1 =
LED2 = Flash
LED3 = Flash
Fault = Outdoor ambient sensor open or short


5. Inverter under ceiling/cassette/ducted units

Display = E0
Failure = Communication between indoor and outdoor

Display = E1
Failure = Phase rotation/phase missing

Display = E2
Failure = Communication error between indoor unit and master unit

Display = E4
Failure = Outdoor temp sensor error

Display = E5
Failure = Compressor discharge temp sensor

Display = E8
Failure = Outdoor unit address error

Display = E9
Failure = Power volt error

Display = H0
Failure = Communication malfunction between IR341 and 780034

Display = H1
Failure = Communication between 0537 or 9177 and 780034

Display = H2
Failure = Quantity of outdoor unit decreases

Display = H3
Failure = Quantity of outdoor unit increases

Display = H4
Failure = P6 protection detected 3 times

Display = H5
Failure = P2 detected 3 times in 30 minutes

Display = H6
Failure = P4 detected 3 times in 100 minutes

Display = H7
Failure = Indoor unit decrease error

Display = H8
Failure = Discharge pressure sensor error

Display = H9
Failure = P9 detected 3 times in 30 minutes

Display = P0
Failure = Inverter compressor top temperature protection

Display = P1
Failure = HP protection

Display = P2
Failure = LP protection

Display = P3
Failure = Inverter compressor current protection

Display = P4
Failure = Compressor discharge temp protection (short of refrigerant)

Display = P5
Failure = Outdoor condensor high temp protection

Display = P6
Failure = Inverter module protection

Display = P7
Failure = Current protection No.1 Fixed compressor

Display = P8
Failure = Current protection No.2 Fixed compressor

Display = P9
Failure = Fan motor protection

Display = L0
Failure = DC inverter module protection

Display = L1
Failure = DC supply low voltage

Display = L2
Failure = DC supply high voltage protection

Display = L4
Failure = MEC Failure

Display = L8
Failure = Frequency protection

Display = L9
Failure = Frequency protection


6. MAC Cassette units

Display = E2
Failure = Room temp sensor failure

Display = E3
Failure = Coil temp sensor failure

Display = E4
Failure = Condensor sensor failure

Display = E5
Failure = Water pump temp sensor

Display = E6
Failure = Outdoor malfunction

Display = E7
Failure = EEPROM malfunction

Display = E8
Failure = Water-level alarm


7. Package units

Display = E0
Failure = Phase rotation/phase missing

Display = E1
Failure = Outdoor coil sensor in system A

Display = E2
Failure = Outdoor coil sensor in system B

Display = E5
Failure = Indoor coil sensor in system A

Display = E6
Failure = Indoor coil sensor in system B

Display = E9
Failure = Indoor temp sensor error

Display = EA
Failure = Outdoor ambient sensor error

Display = EB
Failure = Wire controller output error

Display = P0
Failure = Overcurrent protection in system A

Display = P1
Failure = Overcurrent protection in system B

Display = P2
Failure = Overcurrent protection for outdoor fan

Display = P3
Failure = Comprehensive protection for outdoor fan

Display = P4
Failure = Protection for HP/LP or discharge temp in system A

Display = P5
Failure = Protection for HP/LP or discharge temp in system B

Display = P6
Failure = HP protection initiated inT2 evaporator stops the outdoor unit fan

Display = P7
Failure = HP protection initiated inT2 evaporator stops the outdoor unit fan and compressor

Display = P8
Failure = Protection for condenser at high temp in system A

Display = P9
Failure = Protection for condenser at high temp in system B

Display = PC
Failure = Anti-freezing protection for evaporator in system A

Display = PD
Failure = Anti-freezing protection for evaporator in system B

Display = PF
Failure = Defrosting


8. Portable units

Display = HP
Failure = HP alarm

Display = Ft
Failure = Full tray or full tank

Display = Pf
Failure = Probe failure

Display = Lt
Failure = Low temp

Display = E1
Failure = Room temp sensor

Display = E2
Failure = Evaporator temp sensor

Display = E3
Failure = Condensor temp sensor

Display = P1
Failure = Bottom tray is full

8. Water heaters (Retro fit)

Display = E1
Failure = Phase reversal/phase missing error

Display = E2
Failure = Communication error between unit and wired control or sensor damaged

Display = E3
Failure = Outlet water temp sensor error

Display = E4
Failure = Water temp sensor failure in the water tank

Display = E5
Failure = Condensor temp sensor error

Display = E6
Failure = Outdoor ambient temp sensor error

Display = E7
Failure = Sensor failure at water pump outlet

Display = E9
Failure = T8 temp sensor error

Display = Ed
Failure = Sensor failure at double pipe refrigerant outlet

Display = P1
Failure = HP protection/air in system/pump not starting/no water

Display = P2
Failure = System current protection

Display = P4
Failure = Tt HP protection

Display = P5
Failure = Condenser HP protection

Display = P8
Failure = Protection for over temp at condenser outlet

Display = P9
Failure = Anti-freezing protection

Display = Pb
Failure = Anti-freezing protection

Display = H0
Failure = Indoor and outdoor units unmatched


Swimming pooll heaters

Display = E1
Failure = Phase rotation/phase missing

Display = E2
Failure = Outdoor unit and wire controller communication error

Display = E3
Failure = Outlet water temp sensor error

Display = E4
Failure = Inlet water temp sensor error

Display = E5
Failure = Evaporator pipe temp sensor error

Display = E7
Failure = Ambient temp sensor error

Display = E9
Failure = Water flow switch error

Display = EE
Failure = Discharge pipe temp sensor error

Display = P0
Failure = Discharge pressure over-high protection

Display = P1
Failure = Low pressure protection

Display = P4
Failure = Compressor over current protection

Display = P6
Failure = Evaporator over temp protection

Display = Pb
Failure = Anti-freeze protection

Display = Pf
Failure = Discharge temp protection (too high)


Integrated water heater

Display = E0
Failure = Error of sensor T5U

Display = E1
Failure = Error of sensor T5L

Display = E2
Failure = Tank and wired controller communication error

Display = E4
Failure = Condensor pipe temp sensor error

Display = E5
Failure = Outdoor ambient temp sensor error

Display = E6
Failure = Sensor Tp error

Display = E8
Failure = Electric leakage protection

Display = LA
Failure = Ambient temp is outside of range 5° _ 43°

Display = P0
Failure = Condensor pipe temp overflow protection

Display = P2
Failure = High dicharge temp

Display = P3
Failure = Open compressor circuit protection

Display = P4
Failure = Compressor overcurrent protection

Display = P8
Failure = Open upper e-heater circuit protection

Display = P9
Failure = Upper e-heater overloaded protection

Display = Pa
Failure = Open lower e-heater circuit protection

Display =  Pb
Failure = Lower e-heater overloaded protection


Commercial water heater

Display = E1
Failure = Phase rotation/phase missing

Display = E2
Failure = Communication failure between wired remote and main unit

Display = E3
Failure = Outlet water temp sensor failure

Display = E4
Failure = Water temp sensor in the water tank failure

Display = E5
Failure = Condenser temp sensor failure

Display = E6
Failure = Outdoor ambient temp sensor failure

Display = E7
Failure = Electric heating pipe temp sensor failure

Display = Ec
Failure = Water inlet temp sensor error

Display = Eb
Failure = Exhaust temp sensor error (TP temp)

Display = P0
Failure = System LP protection

Display =  P1
Failure = System HP protection (deficient circulating pump/pump faulty also possible)

Display = P2
Failure = Current protection for system 2

Display =  P3
Failure = Current protection for system 1

Display = P8
Failure = Protection for excessive high outlet water temp

Display = Pb
Failure = Anti-freezing protection

Read More ->>

SENVILLE AIR CONDITIONER ERROR CODES

DC INVERTER SPLIT WALL-MOUNTED TYPE
Indoor Unit Error Display
Note: E4 & P3: Reserved function.

Display = E0
LED STATUS  = EEPROM parameter error

Display = E1
LED STATUS  = Indoor / outdoor units communication protection

Display = E2
LED STATUS  = Zero-crossing signal error

Display = E3
LED STATUS  = Indoor fan speed out of control

Display = E5
LED STATUS  = Open or short circuit of outdoor temperature sensor or outdoor unit EEPROM parameter error

Display = E6
LED STATUS  = Open or short circuit of room or evaporator temperature sensor

Display = E7
LED STATUS  = Outdoor fan speed out of control

Display = P0
LED STATUS  = IBM malfunction or IGBT over-strong current protection

Display = P1
LED STATUS  = Over voltage or too low voltage protection

Display = P2
LED STATUS  = Temperature protection of compressor top

Display =
LED STATUS  = Inverter compressor drive error

Display = P4
LED STATUS  =


Outdoor unit error display:
On the outdoor PCB, there are two LED lights. One is green, the other is red. You can judge what the error is through the status of the two lights.
O light X off *flash

Error = Over voltage or too low voltage protection
LED6 (Green ) = O
LED5 (Red) = O
Indoor unit display = P1

Error = Stand by
LED6 (Green ) = O
LED5 (Red) = X
Indoor unit display =

Error = Over voltage or too low voltage protection
LED6 (Green ) = O
LED5 (Red) = W
Indoor unit display = P1

Error = Normal operation
LED6 (Green ) = X
LED5 (Red) = O
Indoor unit display =

Error = Inverter compressor drive error
LED6 (Green ) = X
LED5 (Red) = W
Indoor unit display = P4

Error = Inverter compressor drive error
LED6 (Green ) = W
LED5 (Red) = O
Indoor unit display = P4

Error = IBM malfunction or IGBT over-strong current protection
LED6 (Green ) =  W
LED5 (Red) = X
Indoor unit display = P0

Error = Inverter compressor drive error
LED6 (Green ) = W
LED5 (Red) = W
Indoor unit display = P4

Read More ->>

Carrier Central AC Fault Codes

The status codes flashed by the amber status light.
Most system problems can be diagnosed by reading the status code as flashed by the amber status light on the control board.
The codes are flashed by a series of short and long flashes of the status light. The short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the error code.

The short flash is 0.25 seconds ON and the long flash is 1.0 second ON. Time between flashes is 0.25 seconds. Time between short flash and first long flash is 1.0 second. Time between code
repeating is 2.5 seconds with LED OFF.
EXAMPLE:
3 short flashes followed by 2 long flashes indicates a 32 code.


OPERATION = Standby – no call for unit operation
FAULT = None
AMBER LED FLASH CODE = On solid, no flash
POSSIBLE CAUSE AND ACTION = Normal operation

OPERATION = Low Stage Cool/Heat Operation
FAULT = None
AMBER LED FLASH CODE = 1, pause
POSSIBLE CAUSE AND ACTION = Normal operation

OPERATION = High Stage Cool/Heat Operation
FAULT = None
AMBER LED FLASH CODE = 2, pause
POSSIBLE CAUSE AND ACTION = Normal operation

OPERATION = Brown out protection is Disabled
FAULT = None
AMBER LED FLASH CODE = 5, pause
POSSIBLE CAUSE AND ACTION = User made selection, see instructions for more detail

OPERATION = Brown out protection is Active
FAULT = None
AMBER LED FLASH CODE = 6, Pause
POSSIBLE CAUSE AND ACTION = User made selection, see instructions for more detail

OPERATION =
FAULT = System Communications Failure
AMBER LED FLASH CODE = 16
POSSIBLE CAUSE AND ACTION = Communication with User Interface lost. Check wiring to User Interface, indoor and outdoor units

OPERATION =
FAULT = Invalid Model Plug
AMBER LED FLASH CODE =25
POSSIBLE CAUSE AND ACTION = Control does not detect a model plug or detects an invalid model plug. Unit will not operate without correct model plug.

OPERATION =
FAULT = High Pressure Switch Open
AMBER LED FLASH CODE = 31*
POSSIBLE CAUSE AND ACTION = High---pressure switch trip. Check refrigerant charge, outdoor fan operation and coils for airflow restrictions

OPERATION =
FAULT = Low Pressure Switch or Discharge Temp Switch Open
AMBER LED FLASH CODE = 32*
POSSIBLE CAUSE AND ACTION = Low---pressure switch or discharge temperature switch trip. Check refrigerant charge and indoor air flow.

OPERATION =
FAULT = Control Fault
AMBER LED FLASH CODE = 45
POSSIBLE CAUSE AND ACTION = Outdoor unit control board has failed. Control board needs to be replaced.

OPERATION =
FAULT = Brown Out (230 v)
AMBER LED FLASH CODE = 46
POSSIBLE CAUSE AND ACTION = Line voltage < 187v for at least 4 seconds. Compressor and fan operation not allowed until voltage>190v. Verify line voltage.

OPERATION =
FAULT = No 230v at Unit
AMBER LED FLASH CODE = 47
POSSIBLE CAUSE AND ACTION = There is no 230v at the contactor when indoor unit is powered and cooling/ heating demand exists. Verify the disconnect is closed and 230v wiring is connected to the unit.

OPERATION =
FAULT = Outdoor Air Temp Sensor Fault
AMBER LED FLASH CODE = 53
POSSIBLE CAUSE AND ACTION = Outdoor air sensor not reading or out of range. Ohm out sensor and check wiring.

OPERATION =
FAULT = Outdoor Coil Sensor Fault
AMBER LED FLASH CODE = 55
POSSIBLE CAUSE AND ACTION = Coil sensor not reading or out of range. Ohm out sensor and check wiring.

OPERATION =
FAULT = Thermistors out of range
AMBER LED FLASH CODE = 56
POSSIBLE CAUSE AND ACTION = Improper relationship between coil sensor and outdoor air sensor. Ohm out sensors and check wiring.

OPERATION =
FAULT = Low Stage Thermal Cutout
AMBER LED FLASH CODE = 71*
POSSIBLE CAUSE AND ACTION = Compressor operation detected then disappears while low stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long (if installed).

OPERATION =
FAULT = High Stage Thermal Cutout
AMBER LED FLASH CODE = 72*
POSSIBLE CAUSE AND ACTION = Compressor operation detected then disappears while high stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long (if installed)

OPERATION =
FAULT = Contactor Shorted
AMBER LED FLASH CODE = 73
POSSIBLE CAUSE AND ACTION = Compressor voltage sensed when no demand for compressor operation exists. Contactor may be stuck closed or there is a wiring error.

OPERATION =
FAULT = No 230V at Compressor
AMBER LED FLASH CODE = 74
POSSIBLE CAUSE AND ACTION = Compressor voltage not sensed when compressor should be starting. Contactor may be stuck open or there is a wiring error

OPERATION =
FAULT = Low Stage Thermal Lockout
AMBER LED FLASH CODE = 81
POSSIBLE CAUSE AND ACTION = Thermal cutout occurs in three consecutive low/high stage cycles. Low stage locked out for 4 hours or until 24v power recycled

OPERATION =
FAULT = High Stage Thermal Lockout
AMBER LED FLASH CODE = 82
POSSIBLE CAUSE AND ACTION = Thermal cutout occurs in three consecutive high/low stage cycles. High stage locked out for 4 hours or until 24v power recycled.

OPERATION =
FAULT = Low---Pressure Lockout
AMBER LED FLASH CODE = 83
POSSIBLE CAUSE AND ACTION = Low pressure switch trip has occurred during 3 consecutive cycles. Unit operation locked out for 4 hours or until 24v power recycled.

OPERATION =
FAULT = High ---Pressure Lockout
AMBER LED FLASH CODE = 84
POSSIBLE CAUSE AND ACTION = High pressure switch trip has occurred during 3 consecutive cycles. Unit operation locked out for 4 hours or until 24v power recycled.

Sequence: Compressor contactor is de---energized and outdoor fan is energized for up to 15 minutes. If demand still exists, control will energize compressor contactor after 15 minute delay. If fault is cleared, unit will resume operation. If fault still exists, fan shuts off, and error code continues to flash. Control will attempt re--- start every 15 minutes. Cycling low voltage defeats the 15 minute delay

Read More ->>

Daikin LXE10E -A33 LXE10E -A33A Alarm display and back-up function

Note 1) The alarm LED does not blink when E code alarm is generated.
To check if any alarm generates, use alarm indication function in the section "1. Current indication
mode" of "3.3.2 Mode operation procedure.
2) In the event error E101, E103, E107, or E109 occurs 10 times, the system will go to 4-hour standby mode.
When both evaporators have malfunctioned, the unit stops.
3) In case of sensor malfunction, the judgment for sensor malfunction does not perform for 3 minutes before the pressure or temperature reaches to the specified value.

Alarm grouping = Permanent stop
Alarm code = F101
Alarm content = HPS activated within 30 seconds after operation start or protection device activated 5 times at start-up operation or Fuse 1 brown (Refer Page 7-7).
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F109
Alarm content = Low- pressure drops to–85kPa or lower within 2 seconds after operation start
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F111
Alarm content = HPS does not activate when it reaches to the set value
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F301
Alarm content = Temperature setting required (SRAM failure)
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F401
Alarm content = Return / Supply for data / Supply air sensor malfunction (at chilled mode)
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F603
Alarm content = Suction modulating valve (SMV) does not fully close contrary to the designation
or initial setting of the controller is wrong
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F701
Alarm content = Abnormal high voltage (over 600V) or low voltage (under 300V)
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F705
Alarm content = S phase became open phase
Action with alarm = Unit stops

Alarm grouping = Permanent stop
Alarm code = F803
Alarm content = Abnormalities, which make it impossible to continue operation (Note2.)
Action with alarm = Unit stops

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Protection device activation
Alarm code = E101
Alarm content = High-pressure switch activated during normal operation.
Action with alarm = Restart after 3-minute

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Protection device activation
Alarm code = E103
Alarm content = CTP or electronic OC activated during normal operation
Action with alarm = Restart after 3-minute

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Protection device activation
Alarm code = E105
Alarm content = Micro processor OC activated during normal operation
Action with alarm = Restart after 3-minute

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Protection device activation
Alarm code = E107
Alarm content = DCHS became abnormal high temperature during operation.
In the event the refrigerant circulation rate is low, the unit will stand by for three minutes to restart then.
Action with alarm = Restart after 3-minute (If this error occurs two times, F803 error will be detected to stop the unit)

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Protection device activation
Alarm code = E109
Alarm content = Low pressure drops to–90kPa or lower for 2 seconds or longer successively during normal operaton
Action with alarm = Restart after 3-minute

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Control error
Alarm code = E201
Alarm content = Pump down is not completed within 90 seconds
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Control error
Alarm code = E203
Alarm content = Overcool protection activates in the chilled.(Control temperature ≦ SP–3°C or for 3 minutes)
Action with alarm = Restart after 3-minutes

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Control error
Alarm code = E205
Alarm content = Evaporator for motor failure (Note 2)
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Control error
Alarm code = E207
Alarm content = Defrosting is not completed within 90 minutes
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Printed-circuit board failure
Alarm code = E303
Alarm content = Humidity setting required (SRAM failure)
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Printed-circuit board failure
Alarm code = E305
Alarm content = Defrost timer setting required (SRAM failure)
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Printed-circuit board failure
Alarm code = E307
Alarm content = Calendar setting required (SRAM failure)
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Printed-circuit board failure
Alarm code = E311
Alarm content = Trip-start setting required (SRAM failure)
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Printed-circuit board failure
Alarm code = E315
Alarm content = PT/CT board failure
Action with alarm = Restart after 3-minutes

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E401
Alarm content = Supply air temperature sensor (SS) malfunction
Action with alarm = Back-up operation

Alarm grouping =  Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E402
Alarm content = Data recorder supply air temperature sensor (DSS) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E403
Alarm content = Return air temperature sensor (RS) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E404
Alarm content = Data recorder return air temperature sensor (DRS) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E405
Alarm content = Discharge air temperature sensor (DCHS) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E406
Alarm content = Suction gas temperature sensor (SGS) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E407
Alarm content = Evaporator inlet temperature sensor (EIS) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E409
Alarm content = Evaporator outlet sensor (EOS) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E411
Alarm content = Ambient sensor (AMBS) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E413
Alarm content = Low pressure transducer (LPT) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E415
Alarm content = High pressure transducer (HPT) malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E417
Alarm content = Voltage sensor (PT1) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E421
Alarm content = Current sensor (CT1) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E423
Alarm content = Current sensor (CT2) malfunction
Action with alarm = Restart after 3-minutes

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E425
Alarm content = Pulp temperature sensor (USDA1) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E427
Alarm content = Pulp temperature sensor (USDA2) malfunction
Action with alarm =  Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E429
Alarm content = Pulp temperature sensor (USDA3) malfunction
Action with alarm = Only alarm display

Alarm code = E431
Alarm content = Humidity sensor (HuS) malfunction
Action with alarm = Only alarm display
Alarm grouping = Display alone or restartable alarm
Alarm grouping = Sensor alarm
Alarm code = E433
Alarm content = Cargo temperature sensor (CTS) or box temperature sensor (CBS) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Electronic functional part alarm
Alarm code = E603
Alarm content = Suction modulating valve (SMV) malfunction or driver malfunction
Action with alarm = Back-up operation

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Electronic functional part alarm
Alarm code = E607
Alarm content = MDS (sheet key) malfunction
Action with alarm = Only alarm display

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Power supply alarm
Alarm code = E707
Alarm content = Momentary power failure
Action with alarm = Restart after 3-minutes

Alarm grouping = Display alone or restartable alarm
Alarm grouping = Ohter alarm
Alarm code = E801
Alarm content = Backup battery replacement date exceeded
Action with alarm = Only alarm display

Read More ->>

Americool Portable Air Conditioners Alarm Codes

Americool Portable Air Conditioners Alarm Codes Model HPC-3000 / HPC-5000 / WPC-7000 / WPC-9000 / WPC-15000

Alarm Display = 1C
Problem = Frost preven on sensor and Abnormal temperature sensor value
Cause = • Indoor heat exchanger temperature too low
• TH3 temperature sensor has a loose or broken connec on
Corrective Action = • Do not use the air conditioner if ambient
temperature is lower than 18°C (64°F)
• Contact a qualified service agent

Alarm Display = P5
Problem = Refrigerant high pressure switch
Cause = • Blocked air fi lter
• Blocked /kinked exhaust duct
• Ambient temperature is too high
Corrective Action = Clean air filter
• Ensure exhaust duct is not blocked / kinked
• Do not use the air conditioner if ambient temperature is higher than 45°C (113°F)

Alarm Display = 51
Problem = Abnormal temperature sensor value
Cause = TH1(Outlet) temperature sensor has a loose or broken connection
Corrective Action = Contact a qualified service agent

Alarm Display = 52
Problem = Abnormal temperature sensor value
Cause =  TH2(Inlet) temperature sensor has a loose or broken connection
Corrective Action = Contact a qualified service agent

Alarm Display = C0
Problem = Compressor overloaded
Cause = • Ambient temperature is too high
• Unstable voltage supply
• Defective compressor
Corrective Action = • Do not use the air conditioner if ambient temperature is higher than 45°C (113°F)
• Contact a qualified service agent
• Replace compressor

Alarm Display = Ft
Problem = Condensate water level alarm
Cause = Condensate tank is full
Corrective Action = • Empty the water tank
• A er installa on of the water tank, press the SPOT/COOL or ROOM/COOL bu on to resume
operation

Alarm Display = FU
Problem = Drain pump alarm
Cause = Drain pump defective or improper hose connection (including kink or blockage)
Corrective Action = • Check the hose connection and hose
• Replace drain pump

Read More ->>

Daikin Ururu Sarara Error Code

Inverter Pair E-Series

Heat Pump
Indoor Units
FTXR28EV1B
FTXR42EV1B
FTXR50EV1B

Outdoor Units
RXR28EV1B
RXR42EV1B
RXR50EV1B


Code = Basic Failure Diagnosis
Unit = Basic Failure Diagnosis
Description = Air conditioner does not run.

Code = Basic Failure Diagnosis
Unit = Basic Failure Diagnosis
Description = Air conditioner runs but does not get cooling (heating)

Code = Basic Failure Diagnosis
Unit = Basic Failure Diagnosis
Description = When operation starts, safety breaker works.

Code = Basic Failure Diagnosis
Unit = Basic Failure Diagnosis
Description = Air conditioner makes big noise and vibration.

Code = Basic Failure Diagnosis
Unit = Basic Failure Diagnosis
Description = Air does not humidified enough

Code = A1
Unit = Indoor
Description = Indoor unit PCB fault

Code = A5
Unit = Indoor
Description = Peak-cut control or freeze-up protection

Code = A6
Unit = Indoor
Description = Fan motor system fault

Code = AH
Unit = Indoor
Description = Streamer unit fault

Code = C4
Unit = Indoor
Description = Indoor heat exchanger thermistor fault

Code = C7
Unit = Indoor
Description = Front panel open / close fault

Code = C9
Unit = Indoor
Description = Room temperature thermistor fault

Code = CC
Unit = Indoor
Description = Humidity sensor fault

Code = E1
Unit = Outdoor
Description = Outdoor unit PCB fault

Code = E5
Unit = Outdoor
Description = OL activation (compressor overload)

Code = E6
Unit = Outdoor
Description = Compressor lock

Code = E7
Unit = Outdoor
Description = DC fan lock

Code = E8
Unit = Outdoor
Description = Input overcurrent detection

Code = EA
Unit = Outdoor
Description = Four way valve fault

Code = F3
Unit = Outdoor
Description = Discharge pipe temperature control

Code = F6
Unit = Outdoor
Description = High pressure control in cooling

Code = H0
Unit = Outdoor
Description = Compressor sensor system fault

Code = H1
Unit = Humidifying unit
Description = Damper fault

Code = H6
Unit = Outdoor
Description = Position sensor fault

Code = H8
Unit = Outdoor
Description = DC voltage / DC current sensor fault

Code = H9
Unit = Outdoor
Description = Outdoor air thermistor fault

Code = J3
Unit = Outdoor
Description = Discharge pipe thermistor fault

Code = J6
Unit = Outdoor
Description = Outdoor heat exchanger thermistor fault

Code = L3
Unit = Outdoor
Description = Abnormal temperature in electrical box

Code = L4
Unit = Outdoor
Description = Temperature rise in radiation fin

Code = L5
Unit = Outdoor
Description = Output overcurrent

Code = P4
Unit = Outdoor
Description = Radiation fin thermistor fault

Code = P9
Unit = Humidifying unit
Description = Fan motor system fault / fan lock

Code = PA
Unit = Humidifying unit
Description = Heater wire fault

Code = PH
Unit = Humidifying unit
Description = Humidification fan outlet thermistor fault / abnormal heater temperature

Code = U0
Unit = System
Description = Insufficient gas

Code = U2
Unit = System
Description = Over voltage protection (OVP) / low voltage protection (LVP)

Code = U4
Unit = System
Description = Signal transmission error (indoor unit - outdoor unit)

Code = U4
Unit = Outdoor
Description = Outdoor unit PCB fault or communication circuit fault

Code = U7
Unit = System
Description = Signal transmission error on outdoor unit PCB

Code = UA
Unit = System
Description = Incompatible power supply between indoor unit and outdoor unit

Code = UA
Unit = Indoor
Description = Incomplete setting for hose length

Code = -
Unit = System
Description = Lights-out of microcomputer status lamp

Read More ->>

MITSUBISHI CITY MULTI FAULT CODE

FAULT CODE =  403
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Comms fault between boards - check inverter error detail for which 2 boards, check transformer, bus voltage and inter-connecting cables

FAULT CODE = 900
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Lossnay unit in test run

FAULT CODE = 1102
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = High compressor discharge temperature. Discharge temperature has exceeded 110°C or more. Short of refrigerant. Discharge thermistor

FAULT CODE = 1111
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Low pressure/temperature fault - check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter

FAULT CODE = 1112
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Low pressure/temperature fault - check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter

FAULT CODE = 1113
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Low pressure/temperature fault - check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter

FAULT CODE = 1202
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary fault to 1102

FAULT CODE = 1204
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary heat exchanger gas temperature sensor fault - check thermistors 10a and 10b

FAULT CODE = 1205
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH5)

FAULT CODE = 1211
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH2)

FAULT CODE =  1214
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (THHS)

FAULT CODE = 1216
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH7)

FAULT CODE = 1217
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH8)

FAULT CODE = 1219
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH9)

FAULT CODE = 1221
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH6)

FAULT CODE = 1243
R22 = -
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Preliminary thermistor fault (TH10)

FAULT CODE = 1301
R22 = -
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Low pressure fault (63L operation) low pressure sensor sensing less than 1 bar immediately before starting

FAULT CODE = 1302
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = High pressure fault - check pressure in system for more than 29 bar (R407c) 38 bar (R410A). Check high pressure sensor against gauge pressure

FAULT CODE = 1368
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Pressure sensor fault (PS1) at BC - compare pressure reading on SW1 on O/C

FAULT CODE = 1370
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Pressure sensor fault (PS3) at BC - compare pressure reading on SW1 at O/C

FAULT CODE = 1402
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary fault to 1302

FAULT CODE = 1500
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = System overcharge. Abnormal low compressor superheat - discharge thermistor TH4

FAULT CODE = 1501
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = High compressor shell temp - check for shortage of gas, insufficient indoor index running (comms room units)

FAULT CODE = 1505
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Suction pressure abnormal - generated by low pressure sensor detecting a vacuum - check for blockage, closed valve or sensor fault

FAULT CODE = 2500
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Detecting lack of water flow on a water circuit

FAULT CODE = 2502
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = I/C has water level in drip tray, when the unit was running in cooling (temperature sensors - check for open or closed circuit and operation of pump)

FAULT CODE = 2503
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = I/C has water level in drip tray when the unit was running in cooling (float sensor - check for closed circuit on float switch and operation of pump)

FAULT CODE = 2600
R22 = x
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Water leak from humidifier

FAULT CODE = 4100
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Compressor over current protection on Mr Slim with M-net interface - check inverter or compressor

FAULT CODE = 4101
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Compressor over current protection on Mr Slim with M-net interface - check inverter or compressor

FAULT CODE = 4102
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Open phase fault - check power supply and noise filter for loss of phase, check wiring and fuses

FAULT CODE = 4103
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Reverse phase fault - check phase rotation, loss of phase through the noise filter, fuse blown and high pressure switch open at power on

FAULT CODE = 4106
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Transmission power supply fault - check wiring, high current, incorrect voltage on transmission line and/or M-Net board

FAULT CODE = 4108
R22 = -
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = Over current protection on DOL compressor - check power supply, contactor and compressor

FAULT CODE = 4115
R22 = x
R407c = x        
R410A = x                                                              
LOSSNAY = -
DESCRIPTION = Power supply abnormal - check power, fuses, connections and PCB

FAULT CODE = 4116
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Fan motor abnormal - check fan motor and board (relates to indoor unit or Lossnay unit)

FAULT CODE = 4124
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Thermal switch (49C) open circuit on Mr Slim on M-Net - reset and check pressures and air flow

FAULT CODE = 4210
R22 = x
R407c  = -
R410A = -
LOSSNAY = -
DESCRIPTION = Compressor over current problem - check inverter balance. Compressor and inverter

FAULT CODE = 4220
R22 = -
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Low inverter board BUS voltage. Less than 289VdcDC is detected. - check mains supply

FAULT CODE = 4225
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Low DC voltage on Vdc on fan inverter - check CNVdc for 300Vdc on diode stack and check mains power supply to outdoor unit

FAULT CODE = 4230
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = High temperature on heat sink on inverter - check for blockages in air duct, failure of INV fan or failure of thermistor

FAULT CODE = 4235
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Fan inverter heat sink overheat protection. Reduced airflow through heat sink. Fan motor problem. THHS thermistor problem.

FAULT CODE = 4240
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Over current protection. If high current is detected for more than 10 minutes - check inverter balance. Reduced airflow through heat sink

FAULT CODE = 4245
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Over current protection. Possible ACCT current sensor fault. Should read 280 ohms between pins 1 & 2 and across pins 3 & 4

FAULT CODE = 4250
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Over current protection. Inverter IPM problem. Compressor lock - check inverter balance

FAULT CODE = 4255
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Inverter cooling fan problem - if high static fan is used then check that SW3-9 is on

FAULT CODE = 4260
R22 = -
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Preliminary inverter heat sink overheat protection. Reduced airflow through heat sink. Fan motor problem. THHS thermistor problem.

FAULT CODE = 5101
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Thermistor fault at indoor/outdoor unit - check fault code address

FAULT CODE = 5102
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Thermistor fault at indoor/outdoor unit - check fault code address

FAULT CODE = 5103
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Thermistor fault at indoor/outdoor unit - check fault code address

FAULT CODE = 5104
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Thermistor fault at indoor/outdoor unit - check fault code address (indoor fault - check SW7-3 is off)

FAULT CODE = 5105
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = TH5 open/short circuit - check if the TH is disconnected from the board

FAULT CODE = 5106
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = TH5 open/short circuit - check if the TH is disconnected from the board

FAULT CODE = 5107
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = TH7 open/short circuit - check if the TH is disconnected from the board

FAULT CODE = 5108
R22 = x
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = TH8 open/short circuit - check if the TH is disconnected from the board

FAULT CODE = 5109
R22 = -
R407c = x
R410A = -
LOSSNAY = -
DESCRIPTION = TH9 open/short circuit - check if the TH is disconnected from the board

FAULT CODE = 5110
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = TH10 open/short circuit - check if the TH is disconnected from the board

FAULT CODE = 5111
R22 = x
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = BC box thermistor error - TH11 open/short circuit, disconnected from board/pipe

FAULT CODE = 5112
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = BC box thermistor error - TH10 open/short circuit, disconnected from board/pipe

FAULT CODE = 5113
R22 = x
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = BC box thermistor error - TH open/short circuit, disconnected from board/pipe

FAULT CODE = 5114
R22 = x
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = BC box thermistor error - TH open/short circuit, disconnected from board/pipe

FAULT CODE = 5115
R22 = x
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = BC box thermistor error - TH15 open/short circuit, disconnected from board/pipe

FAULT CODE = 5116
R22 = x
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = BC box thermistor error - TH16 open/short circuit, disconnected from board/pipe

FAULT CODE = 5201
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Pressure sensor fault outdoor unit/BC box - check fault code address/SW1 pressure sensor readings

FAULT CODE = 5202
R22 = x
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Pressure sensor fault (PS2) in the BC box

FAULT CODE = 5203
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Pressure sensor fault (PS3) in the BC box

FAULT CODE = 5300
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = A-Control UH fault - see Mr Slim fault code list

FAULT CODE = 5301
R22 = -
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Current sensor fault, ACCT or DCCT - check inv. error details

FAULT CODE = 5401
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Temperature sensor fault - check CN30 for humidity sensor

FAULT CODE = 5701
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Loose float switch connector - check switch, check CN4F on indoor unit

FAULT CODE = 6201
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = TB7 transmission line communication error - check for voltage abnormality/short

FAULT CODE = 6202
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Transmission processor hardware error - check for noise/short on M-Net cable

FAULT CODE = 6600
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Repeat address fault - two or more units are assigned the same address - correct the repeated address

FAULT CODE = 6601
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Polarity setting error - no voltage or short circuit on the m-net transmission line

FAULT CODE = 6602
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Hardware error of transmission processor. Noise interference. Polarity problem on TB7

FAULT CODE =
R22 =
R407c
R410A =
LOSSNAY = -
DESCRIPTION =

FAULT CODE = 6603
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Bus circuit busy - check if indoor unit, Lossnay unit or anything else has been wired into TB7, instead of TB3

FAULT CODE = 6607
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Communication issue - no response back from unit whilst system is operational

FAULT CODE = 6608
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Communication error - loss of voltage or noise entering the transmission line

FAULT CODE = 6700
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K control communication error - R22 type unit connected onto M-Net circuit comms error

FAULT CODE = 6701
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K control communication error - R22 type unit connected onto M-Net circuit comms error

FAULT CODE = 6702
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K control duplicate address error - two or more R22 type units connected onto M-Net circuit with the same address

FAULT CODE = 6750
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K control communication error - R22 type unit connected onto M-Net circuit comms error

FAULT CODE = 6751
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 R/A thermistor fault (P1)

FAULT CODE = 6752
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 frost protection at I/C (P6)

FAULT CODE = 6753
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Comms fault between O/C and I/C

FAULT CODE = 6754
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 drain fault (P5)

FAULT CODE = 6755
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 drain fault (P5)

FAULT CODE = 6756
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 frost protection at I/C (P6)

FAULT CODE = 6757
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = System error

FAULT CODE = 6758
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Comms fault between I/C and O/C

FAULT CODE = 6761
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 R/A thermistor fault (P1)

FAULT CODE = 6762
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 TH2 fault check resistance (P2)

FAULT CODE = 6763
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 Comms fault between I/C and O/C

FAULT CODE = 6764
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 drain fault (P4)

FAULT CODE = 6765
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 drain fault (P5)

FAULT CODE = 6766
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 frost protection at I/C (P6)

FAULT CODE = 6767
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = R22 comms fault between I/C and O/C

FAULT CODE = 6771
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - high pressure abnormality or low pressure abnormality

FAULT CODE = 6772
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - inner thermostat function, discharge temperature abnormality, shell thermostat function, over current protection

FAULT CODE = 6773
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - radiator plate thermostat function

FAULT CODE = 6774
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - outdoor thermistor abnormality

FAULT CODE = 6775
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - pressure sensor abnormality, indoor/outdoor communication error

FAULT CODE = 6776
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - over current shut-off

FAULT CODE = 6777
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - system error

FAULT CODE = 6778
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - normal

FAULT CODE = 6779
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = K abnormality - refrigerant overcharge, abnormal voltage, abnormal CT sensor

FAULT CODE = 6830
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = Comms fault between I/C and R/C check connections to MA R/C and check for 12Vdc check R/C not set sub controller

FAULT CODE = 6831
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = MA R/C communication fault - check connections on TB15 or that the controller was removed while the I/C was powered

FAULT CODE = 6832
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = MA controller comms fault - check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings

FAULT CODE = 6833
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = MA controller comms fault check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings

FAULT CODE = 6834
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = MA Controller comms fault - check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings

FAULT CODE = 6840
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = A-Control E6/E8 fault - see Mr Slim fault code list

FAULT CODE = 6841
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = A-Control E7/E9 fault - see Mr Slim fault code list

FAULT CODE = 6844
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = A-Control EA fault - see Mr Slim fault code list

FAULT CODE = 6845
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = A-Control Eb fault - see Mr Slim fault code list

FAULT CODE = 6846
R22 = -
R407c = -
R410A = -
LOSSNAY = -
DESCRIPTION = A-Control EC fault - see Mr Slim fault code list

FAULT CODE = 7100
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Over capacity - (R2 150% index exceeded) (Y 130% index exceeded)

FAULT CODE = 7101
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Capacity setting error - SW2 set wrong on indoors, SW5 on YHMA outdoor, (SW3-10 on older kit)

FAULT CODE = 7102
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Error in number of connected units - loss of M-Net voltage (short or break), no power to BC, wrong SW5 setting on box, wrong box type

FAULT CODE = 7105
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Address setting error - OC or BC addressed wrong

FAULT CODE = 7106
R22 = -
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Attribute setting error - SW3-1 setting on a GUF

FAULT CODE = 7107
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Port setting error - check if too much capacity on a single port, wiring SW2 setting, wrong SW14 setting or wrong units on a box when using multiple boxes

FAULT CODE = 7110
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Check SW5-7 is correctly set

FAULT CODE = 7111
R22 = x
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Remote control sensor fault - SW1 - 1 on and no controllers fitted or faulty remote controller

FAULT CODE = 7113
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Function setting error - wrong SW5 setting or wrong resistors fitted on YHM-A

FAULT CODE = 7117
R22 = -
R407c = -
R410A = x
LOSSNAY = -
DESCRIPTION = Model setting error - SW5 set wrong or wrong resistors in

FAULT CODE = 7130
R22 = -
R407c = x
R410A = x
LOSSNAY = -
DESCRIPTION = Incompatible equipment on M-Net - check split with MAC 399 wired onto the TB5 line TB5 line, not the TB7

Read More ->>