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)

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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

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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

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