GREE Wall Mounted and Ducted Error Codes

GREE Ducted Air-conditioning Error Codes

Error code = E1

error = Compressor high pressure cutout (beep)

Error code = E2

error = Indoor coil freeze protection

Error code = E3

error = Compressor low pressure cut out (beep)

Error code = F0

error = Indoor room temperature failure

Error code = F1

error = Indoor coil temperature failure

Error code = F2

error = outdoor ambient temperature failure

Error code = F3

error = outdoor coil temperature failure

GREE Split air conditioners Error Code

Name of malfunction = Refrigerant system high pressure protection

Display of double eight code = E1

Display of lamp

Running lamp = blink 1 time

Cooling lamp =

Heating lamp =

Name of malfunction = Anti-freezing protection

Display of double eight code = E2

Display of lamp

Running lamp = blink 2 times

Cooling lamp =

Heating lamp =

Name of malfunction = Compressor exhaust high temperature protection

Display of double eight code = E4

Display of lamp

Running lamp = blink 4 times

Cooling lamp =

Heating lamp =

Name of malfunction = AC over-current protection

Display of double eight code = E5

Display of lamp

Running lamp = blink 5 times

Cooling lamp =

Heating lamp =

Name of malfunction = Communication failure between indoor unit and outdoor unit

Display of double eight code = E6

Display of lamp

Running lamp = blink 6 times

Cooling lamp =

Heating lamp =

Name of malfunction =Anti-high temperature protection

Display of double eight code = E8

Display of lamp

Running lamp = blink 8 times

Cooling lamp =

Heating lamp =

Name of malfunction = No feedback of indoor fan motor

Display of double eight code = H6

Display of lamp

Running lamp = blink 11 times

Cooling lamp =

Heating lamp =

Name of malfunction = Jumper cap malfunction protection

Display of double eight code = C5

Display of lamp

Running lamp = blink 15 times

Cooling lamp =

Heating lamp =

Name of malfunction = Indoor ambient sensor open or short circuit

Display of double eight code = F1

Display of lamp

Running lamp =

Cooling lamp = blink 1 times

Heating lamp =

Name of malfunction = Indoor tube sensor open or short circuit

Display of double eight code = F2

Display of lamp

Running lamp =

Cooling lamp = blink 2 times

Heating lamp =

Name of malfunction = Outdoor ambient sensor open or short circuit

Display of double eight code = F3

Display of lamp

Running lamp =

Cooling lamp = blink 3 times

Heating lamp =

Name of malfunction = Outdoor tube sensor open or short circuit

Display of double eight code = F4

Display of lamp

Running lamp =

Cooling lamp = blink 4 times

Heating lamp =

Name of malfunction = Exhaust sensor open or short circuit

Display of double eight code = F5

Display of lamp

Running lamp =

Cooling lamp = blink 5 times

Heating lamp =

Name of malfunction = Over load limit/drop frequency

Display of double eight code = F6

Display of lamp

Running lamp =

Cooling lamp = Blink 6 times

Heating lamp =

Name of malfunction = Over current limit/drop frequency

Display of double eight code = F8

Display of lamp

Running lamp =

Cooling lamp = blink 8 times

Heating lamp =

Name of malfunction = High exhaust temperature limit/drop frequency

Display of double eight code = F9

Display of lamp

Running lamp =

Cooling lamp = blink 9 times

Heating lamp =

Name of malfunction = Over voltage protection for PN

Display of double eight code = PH

Display of lamp

Running lamp =

Cooling lamp = blink 11 times

Heating lamp =

Name of malfunction = AC current detect circuit malfunction

Display of double eight code = U5

Display of lamp

Running lamp =

Cooling lamp = blink 13 times

Heating lamp =

Name of malfunction = Compressor reverse protection

Display of double eight code = U4

Display of lamp

Running lamp = 

Cooling lamp = blink 14 times

Heating lamp =

Name of malfunction = Over compressor phase current protection

Display of double eight code = P5

Display of lamp

Running lamp =

Cooling lamp = blink 15 times

Heating lamp =

Name of malfunction = Inlet tube sensor malfucntion

Display of double eight code = b5

Display of lamp

Running lamp =

Cooling lamp = blink 19 times

Heating lamp =

Name of malfunction = Outdoor DC fan motor malfunction

Display of double eight code = L3

Display of lamp

Running lamp =

Cooling lamp = blink 21 times

Heating lamp =

Name of malfunction = Outlet tube sensor malfunction

Display of double eight code = b7

Display of lamp

Running lamp =

Cooling lamp = blink 22 times

Heating lamp =

Name of malfunction = Compressor overload sensor malfunction 

Display of double eight code = FE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Defrosting

Display of double eight code = H1

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 1 time

Name of malfunction = Static clearing dust protection

Display of double eight code = H2

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 2 times

Name of malfunction = Compressor overload protection

Display of double eight code = H3

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 3 times

Name of malfunction = System abnormal protection

Display of double eight code = H4

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 4 times

Name of malfunction = IPM protection

Display of double eight code = H5

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 5 times

Name of malfunction = PFC protection

Display of double eight code = HC

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 6 times

Name of malfunction = Compressor loss step protection

Display of double eight code = H7

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 7 times

Name of malfunction = Heating anti-high temperature drop frequency

Display of double eight code = HO

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 10 times

Name of malfunction = Start-up failure

Display of double eight code = Lc

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 11 times

Name of malfunction = Compressor protection against loss of phase

Display of double eight code = U2

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 12 times

Name of malfunction = Compressor phase current detection circuit malfunction

Display of double eight code = U1

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 13 times

Name of malfunction = Compressor demagnetization protection 

Display of double eight code = HE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 14 times

Name of malfunction = Loading EEPROM malfunction

Display of double eight code = EE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 15 times

Name of malfunction = Communication failure between main board and driver board

Display of double eight code = P6

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 16 times

Name of malfunction = Capasitor charge malfunction

Display of double eight code = PU

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 17 times

Name of malfunction = IPM sensor circuit malfunction

Display of double eight code = P7

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 18 times

Name of malfunction = IPM high temperature protection

Display of double eight code = P8

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 19 times

Name of malfunction = PN voltage drop protection

Display of double eight code = U3

Display of lamp

Running lamp =

Cooling lamp = blink 20 times

Heating lamp =

Name of malfunction = Low PN voltage protection

Display of double eight code = PL

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp = blink 21 times

Name of malfunction = Current detect circuit malfunction or current sensor malfunction

Display of double eight code = Pc

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Compressor loss of phase protection

Display of double eight code = Ld

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Compressor or locked rotary protection

Display of double eight code = LE

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = IPM over temperature limit/drop frequency

Display of double eight code = EU

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction =  4-way valve reversal abnormal

Display of double eight code = U7

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Disconnection of the exhaust temperature sensor

Display of double eight code = U8

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = AC power zero voltage detect error

Display of double eight code = U9

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Over tube temperature drop frequency

Display of double eight code = FA

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

Name of malfunction = Anti-freezing limit/drop frequency

Display of double eight code = FH

Display of lamp

Running lamp =

Cooling lamp =

Heating lamp =

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Carrier XPower Platinum and Gold Error Code

Judgment by Flashing LED of Indoor Unit.
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section.

Item = A
Check code =
Block display = OPERATION (GREEN) Flashing display (1 Hz)
Description for self-diagnosis = Power failure (When power is ON)

Item = B
Check code = 00
Block display = OPERATION (Green) Flashing display (5 Hz)
Description for self-diagnosis = Protective circuit operation for indoor P.C board

Item = C
Check code = 01
Block display = OPERATION (green) TIMER (Yellow) Flashing display (5 Hz)
Description for self-diagnosis = Protective circuit operation for connecting cable and signal system.

Item = D
Check code = 02
Block display = Operation (green) filter (orange)
Description for self-diagnosis = Protective circuit operation for outdoor P.C board

Item = E
Check code = 03
Block display = OPERATION (green) TIMER (Yellow) Flashing display (5 Hz)
Description for self-diagnosis = Protective circuit operation for others (including compressor)


Caution at Servicing
1. After servicing, press the START/STOP button to return to the normal mode.
2. After servicing by the check code, turn off breaker of the supply and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.
however, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.
3 After servicing, press (CLR) button under check mode status and then send the check code "7F" to the indoor unit.
The error code stored in memory is cleared.

Block distinction
Check code = 00
Block = Indoor P.C. board etc
operation of diagnosis function
Check code = 0C
Cause of operation = Short-circuit or disconnection of the room temperature sensor (TA sensor)
Air conditioner status = Operation continues
Remark = Diplayed when error is detected.
Judgment and action = 1. Check tje room temp sensor
2. When the room temp sensor is normal, check P.C. board

Block distinction
Check code = 00
Block = Indoor P.C. board etc
operation of diagnosis function
Check code = 0d
Cause of operation = Being out of place, disconnection, short circuit or migration of heat exchanger sensor (TC sensor)
Air conditioner status = Operation continues
Remark = Diplayed when error is detected
Judgment and action = 1. Check heat exchanger sensor
2. when heat exchanger sensor is normal, check P.C board

Block distinction
Check code = 00
Block = Indoor P.C. board etc
operation of diagnosis function
Check code = 11
Cause of operation = Lock of indoor fan or trouble on indoor fan circuit
Air conditioner status = All off
Remark = Diplayed when error is detected
Judgment and action = 1. Check the motor
2. When the motor is normal, check P.C board

Block distinction
Check code = 00
Block = Not displayed
operation of diagnosis function
Check code = 12
Cause of operation = Trouble on other indoor P.C board
Air conditioner status = Operation continues
Remark = Diplayed when error is detected
Judgment and action = Replace P.C board

Block distinction
Check code = 01
Block = Connecting cable and serial signal
operation of diagnosis function
Check code = 04
Cause of operation = Return serial signal is not sent to indoor side from operation started
1. Defective wiring of connecting cable.
2. Operation of compressor thermo gas shortage gas leak
Air conditioner status = Operation continues
Remark = Flashes when trouble is detected on Return serial signal, and normal status when signal is reset.
Judgment and action = 1. When the outdoor unit never operate:
- Check connecting cable and connect if defective wiring.
- Check 25A fuse of inverter P.C board
- Check 3.15 A of inverter P.C board
2. To display (Other) block during operation, check compressor thermo.
Operation and supply gas (check gas leak also)
3. Unit operates normally during check.
if rreturn serial signal does not stop between indoor terminal board 2 and 3, replace inverter P.C board.
if signal stops between indoor terminal board 2 and 3, replace indoor P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 14
Cause of operation = Inverter over-current protective circuit operates. (Short time)
Air conditioner status =All off
Remark = Displayed when error is detected.
Judgment and action = Event if trying operation again, all operations stop immediately : Replace P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 16
Cause of operation = Position-detect circuit error or short circuit between windings of compressor
Air conditioner status = All off
Remark = Displayed when error is detected.
Judgment and action = 1. Even if connecting lead wire of compressor is removed, position-detect circuit error occured : Replace P.C board.
2. Measure resistance between of compressor, and perform short circuit : Replace compressor.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 17
Cause of operation = Current-detect circuit error
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = Event if trying operation again, all opperation stp immediately : Replace P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 18
Cause of operation = Being of place, disconnection or short circuit of the outdoor heat exchanger sensor (TE) or suction temp sensor (Ts)
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check sensor (TE and TS) 2. Check P.C board.

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 19
Cause of operation = Disconection or short circuit of the discharge temp sensor
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check discharge temp sensor (TD) 2. Check P.C board

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 1A
Cause of operation = Outdoor fan drive system error
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = Position-detect error, over-current protective operation of outdoor fan drive system, fan lock or etc.
Replace P.C board or fan motor.

Block distinction
Check code = 02
Block = Not displayed
operation of diagnosis function
Check code = 1b
Cause of operation = Outdoor heat exchanger temp sensor error
Air conditioner status = Operation continues
Remark =
Judgment and action = 1. Check outdoor temp sensor (TO) 2. Check P.C board

Block distinction
Check code = 02
Block = Outdoor P.C board
operation of diagnosis function
Check code = 1C
Cause of operation = Compressor drive output error, compressor error (lock, missing or etc), Break down
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = When 20 seconds passed after start-up, position-detect circuit error occured : replace compressor or trouble on P.M.V.

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 07
Cause of operation = Return serial signal has been sent when peration started, but it is not sent from halfway.
Air conditioner status = Operation continues
Remark = Flashes when trouble is detected on return serial signal, and normal status when signal is reset.
Judgment and action = 1. Repeat start an stop with interval of approx 10 to 40 minutes (Code is not displated during operation)
supply gas (Check also gas leak)
2. Unit operates normally during check.
if return serial signal does not stop between indoor terminal block 2 and 3 replace inverter P.C board.
if signal stops between indoor terminal block 2 and 3, replace indoor P.C board.

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 1d
Cause of operation = Compressor does not rotate. (Current protective circuit does not operate when a spceified time passed after compressor had been activated).
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Trouble on compressor 2. Trouble on wiring of compressor (missed phase)

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 1E
Cause of operation = Discharge temp exceeded 117 degrees
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check discharge temp sensor (TD) 2. Gas leakage. 3. Trouble on P.M.V

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 1F
Cause of operation = Break down compressor
Air conditioner status = All off
Remark = Displayed when error is detected
Judgment and action = 1. Check power voltage (220-230-240 V + 10%) 2. Overload operation of refrigeration cycle. check installation condition (Short-circuit of outdoor diffuser)

Block distinction
Check code = 03
Block = Others (including compressor)
operation of diagnosis function
Check code = 08
Cause of operation = 4-way valve inverse error (TC sensor value lowered during heating operation)
Air conditioner status = Operation continues
Remark =
Judgment and action = 1. Check 4-way valve operation

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AUX Wall Mounted Error Code

Introduction to the fault display CODE of AUX air conditioner
1. HS(Y) HSA(Y) HSB(Y) HSF (Y) HV(Y) HVA(Y) digital display for the series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = E4
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal.
Display mode = E1
The display precedence level = 2

Fault source = Copper temp sensor is abnormal (indoor)
Display mode = E3
The display precedence level = 3

Fault source = Copper temp sensor is abnormal (outdoor)
Display mode = E2
The display precedence level = 4

2. H (Except KFR-25G/H) H1 HA HB series faults display:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1


Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2


Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3


Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 1 times in every 1 seconds
The display precedence level = 4

3. H(Y) Model air conditioner fault display:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1


Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2


Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3


Fault source = Copper temp sensor is abnormal (outdoor)
Display mode = Timing light twinkles 1 times in every 1 seconds
The display precedence level = 4

4. EA EC EM EY EZ EAA EAD EL HS1 HSZ HL1 HLZ P P1 ZZ CZ digital display series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = E4
The display precedence level = 1


Fault source = Plastic temp sensor is abnormal
Display mode = E1
The display precedence level = 2

Fault source = Copper temp sensor is abnormal (indoor)
Display mode = E3
The display precedence level = 3

5. All of the other E series except EA EC EM EY EZ EAA EAD:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2

Fault source = Copper temp sensor is abnormal (indoor)
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3

6. QA QB QD digital display series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = E4
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal
Display mode = E1
The display precedence level = 2

Fault source = Copper temp sensor is abnormal
Display mode = E3
The display precedence level = 3

Fault source = Over-current oprotection
Display mode = E6
The display precedence level = 4

7. QC QQ light display series air-conditioner faults:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 4 times in every 8 seconds
The display precedence level = 1

Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2

Fault source = Copper temp sensor is abnormal
Display mode = Timing light twinkles 3 times in every 8 seconds
The display precedence level = 3

Fault source = Over-current oprotection
Display mode = Timing light twinkles 6 times in every 8 seconds
The display precedence level = 4

8. Faults display of 18000BTU~24000BTU wall unit series air-conditioner
Non-digital tube displays:

Fault source = PG motor feedback is abnormal
Display mode = Timing light twinkles 1 times in every 8 seconds
The display precedence level = 2
appearance = System turns off

Fault source = Plastic temp sensor is abnormal
Display mode = Timing light twinkles 2 times in every 8 seconds
The display precedence level = 3
appearance = System turns off

Fault source = Copper temp sensor is abnormal
Display mode = Timing light twinkles 8 times in every 8 seconds
The display precedence level = 4
appearance = System doesn't turns off

Digital tube displays:

Fault source = PG motor feedback is abnormal
Display mode = E1
The display precedence level = 2
appearance = System turns off

Fault source = Plastic temp sensor is abnormal
Display mode = E3
The display precedence level = 3
appearance = System turns off

Fault source = Copper temp sensor is abnormal
Display mode = E2
The display precedence level = 4
appearance = System doesn't turn off

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AUX Cassette Duct Ceiling and Floor Error Code

10 System failure protection and code
Controller will judge various failures in system operation automatically and treats them accordingly subject to
failure types. Failure protection can be classified two types subject to failure reason and treatment method:
system recoverable protection and system serious failure protection.

Controller of HAC-FX-AUX
System recoverable protection
While air condition system recoverability occurs, whole system should adopt correlative protection
measurement.
After failure protected recovers to normal condition, system will recover to nomal condition.

Failure reason = Treturn air sensor damage
Failure code = Po:01
Enter condition = Sensor short or cut
Protection measure = Timing operation
Recovery condition = Repair or replace

Failure reason = Anti-freezing protection under cooling generation
Failure code = Po:03
Enter condition = Tinner pipe < (EP01) and last 2 minutes
Protection measure = Compressor off and recover operation after satisfying exit condition
Recovery condition = Tinner pipe≥ (EP01) +14 degrees

Failure reason = Anti-overload protection under cooling generation
Failure code = Po:04
Enter condition = Touter pipe >
Protection measure = Compressor off and recover operation after satisfying exit condition
Recovery condition = Touter pipe≤50 degrees

Failure reason = Tinner pipe sensor damage
Failure code = Po:06
Enter condition = Sensor short or cut
Protection measure = Cancel Tinner pipe relative Protection function
Recovery condition = Repair or replace

Failure reason =Touter pipe sensor damage
Failure code = Po:07
Enter condition = Sensor short or cut
Protection measure = Cancel Touter pipe relative protection function
Recovery condition = Repair or replace

Failure reason = Over temperature protection under heat genration
Failure code = Po:11
Enter condition = Tinner pipe> (EP04)
Protection measure = Stop compressor, outer fan. Inner fan force high velocity operation
Recovery condition = After Tinner pipe≤ (SP04) Recover operation automatically

Failure reason = Recovery failure protection of water lift pump
Failure code = Po:12
Enter condition = Water level off (EC07) time
Protection measure = Stop compressor
Recovery condition = Automatic reset after on/off normal

System serious failure protection
After system serious failure protection occurs, all units shut down and wair for inspection

Failure reason = Communication failure
Failure code = Eo:00
Enter condition = Enter condition
Protection measure = Protection measure
Recovery condition = Recovery condition

Failure reason = Water lift pump failure
Failure code = Eo:01
Enter condition = water level switch off (EC07) and more than 30 minutes
Protection measure = System shutdown
Recovery condition = Press rest after on/off normal

Failure reason = Outer unit protection (P2)
Failure code = Eo:02
Enter condition = Outer unit protection switch off
Protection measure = System shutdown
Recovery condition = Press rest after on/off normal

Failure reason = Electric heater over temperature (P1)
Failure code = Eo:03
Enter condition = Over temperature switch off (EC06) seconds
Protection measure = System shutdown
Recovery condition = Press rest after on/off normal

Failure display of indicator lamp board
While failure occurs in unit, judge unit failure via three-indicator lamps ddisplay status, details showed as
followed table (constant light-on of power lamp only after controller engerization):

Failure name = Air return sensor failure
Failure code = Po:01
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Anti-freezing under coolinggeneration
Failure code = Po:03
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = ON

Failure name = Anti-overload under coolinggeneration
Failure code = Po:04
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = Inner pipe sensor damage
Failure code = Po:06
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = OFF

Failure name = Outer pipe sensor damage
Failure code = Po:07
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Over temperature protection under heat generation
Failure code = Po:11
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = ON

Failure name = Recovery failure of water lift pump
Failure code = Po:12
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = SHINE

Failure name = Seriousness failure of water lift pump
Failure code = Eo:01
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Outer unit protection swirch off (low pressure protection, phase reverse,phase lost)
Failure code = Eo:02
Red (power) = OFF
Gree (run) = ON
Yellow (timing) = ON

Failure name = Over temperature protection switch off
Failure code = Eo:03
Red (power) = ON
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Unit anti-cooling air
Failure code =
Red (power) = OFF
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Unit unfreezing
Failure code =
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = OFF

Failure name = Telecontrol wait signal
Failure code =
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = OFF

Controller of HAC-F1X-AUX
System recoverable prrotection
While air condition system recoverability occurs, whole system should adopt correlative protection
measurement. After failure protected recovers to normal condition, system will recover to nomal condition.

Failure name = T indoor pipe failure
Failure code = Pr: 01
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = OFF

Failure name = T outdoor pipe failure
Failure code = Pr: 02
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Anti-freezing under coolinggeneration
Failure code = Pr: 03
Red (power) = SHINE
Gree (run) = OF
Yellow (timing) = ON

Failure name = Anti-overload under coolinggeneration
Failure code = Pr: 04
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = T exhaust failure
Failure code = Pr: 05
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = OFF

Failure name = T return wind failure
Failure code = Pr: 06
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = Heating-overload protection
Failure code = Pr: 08
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = ON

Failure name = Water level switch protect
Failure code = Pr: 11
Red (power) = SHINE
Gree (run) = ON
Yellow (timing) = ON

Failure name = Unit anti-cooling air
Failure code =
Red (power) = OFF
Gree (run) = OFF
Yellow (timing) = SHINE

Failure name = Unit unfreezing
Failure code =
Red (power) = OFF
Gree (run) = SHINE
Yellow (timing) = OFF

Failure name = Telecontrol wait signal
Failure code =
Red (power) = SHINE
Gree (run) = OFF
Yellow (timing) = OFF

System serious failure protection
After system serious failure protection occurs, all units shut down and wair for inspection

Failure name = High press protect
Failure code = Er: 04
Red (power) = ON
Gree (run) = OF
Yellow (timing) = SHINE

Failure name = Low press protect
Failure code = Er: 05
Red (power) = ON
Gree (run) = SHINE
Yellow (timing) = SHINE

Failure name = T exhaust protect
Failure code = Er: 06
Red (power) = ON
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = Current over protect
Failure code = Er: 07
Red (power) = ON
Gree (run) = ON
Yellow (timing) = SHINE

Failure name = No outdoor unit
Failure code = Er: 08
Red (power) = OFF
Gree (run) = ON
Yellow (timing) = ON

Failure name = Water level switch graveness protect
Failure code = Er: 11
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = ON

Failure name = Over temperature protection switch disconnection
Failure code = Er: 12
Red (power) = OFF
Gree (run) = ON
Yellow (timing) = SHINE

Failure name = Communication trouble
Failure code = Eo: 00
Red (power) = Line controller alarm ,it will be unchained after the communication electric cir cuitis ok
Gree (run) = Line controller alarm ,it will be unchained after the communication electric cir cuitis ok
Yellow (timing) = Line controller alarm ,it will be unchained after the communication electric cir cuitis ok

Failure name = Phase is lose or phase sequence is Reverse in three phase protection
Failure code = Eo: 03
Red (power) = SHINE
Gree (run) = SHINE
Yellow (timing) = SHINE

AUX Highcool 2007 Series Fault Codes
In the event of a failure a fault code on the controller will usually advise the nature of the problem.
Fault codes are divided into two groups. E codes are major faults and require the system to be manually reset. P codes are minor faults and will reset themselves in the event of the fault condition resolving itself. Sensor Failure P codes will allow the unit to run in emergency mode for 50 minutes with limited functionality before halting operation if the failure is not cleared.
All fault codes should be investigated by an engineer, although Pr03 and Pr08 should be investigated by the user by cleaning the filter and checking the operating temperature first.

Code = Eo00
Reason = ID to RC Comms Failure
Initiation = Comms Fail
Protection = Sys Stop
Recovery = Normal Comms

Code = Eo03
Reason = Phase Lost or Swapped
Initiation = Phase Problem
Protection = Sys Stop
Recovery = Solve Problem

Code = Er04
Reason = High Pressure Trip
Initiation = >42 Bar
Protection = Sys Stop
Recovery = <33 Bar

Code = Er05
Reason = Low Press Trip
Initiation = <1 Bar
Protection = Sys Stop
Recovery = >3 Bar

Code = Er06
Reason = High Discharge Temp
Initiation = >120C
Protection = Sys Stop
Recovery = Fix / Reset

Code = Er07
Reason = Overcurrent Trip
Initiation = ID Coil >16C
Protection = Sys Stop
Recovery = Fix / Reset

Code = Er08
Reason = ID to OD Comms Failure
Initiation = Comms Fail
Protection = Sys Stop
Recovery = Normal Comms

Code = Er11
Reason = Drain Failure
Initiation = Hi Water 30 mins
Protection = Sys Stop
Recovery = Fix / Reset

Code = Er12
Reason = Elec Heat Fail
Initiation = Unused
Protection = Unused
Recovery = Unused

Code = Pr01
Reason = ID Pipe Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr02
Reason = OD Pipe Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr03
Reason = Cooling Mode De-ice
Initiation = ID Coil <-2C/ 2 mins
Protection = Comp Off
Recovery = EP01 + 14C

Code = Pr04
Reason = Cooling Anti Overload
Initiation = OD Coil >60C
Protection = Comp Off
Recovery = OD Pipe <50C

Code = Pr05
Reason = Discharge Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr06
Reason = ID Air Sensor Fail
Initiation = Short or Close
Protection = Emergency Run
Recovery = Repair / Replace

Code = Pr08
Reason = Heating Hi Temp
Initiation = ID Coil >66C
Protection = OD off / ID Hi Spd
Recovery = ID Coil <50C

Code = Pr11
Reason = Drain Failure
Initiation = Hi Water 30 secs
Protection = Comp Off
Recovery = Auto Reset

 





 

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Midea Package Air-cooled Modular Chiller Error Code

Code Trouble
E0 Water-flow detection error (the third time)
E1 Power phases sequence failure
E2 Communication failure
E3 Total outlet water Temperature sensor failure (available for main unit)
E4 Outlet water temperature sensor in double-pipe heat interchanger error
E5 Pipe temperature sensor in condenser A error
E6 Pipe temperature sensor in condenser B error
E7 Outdoor Temperature sensor failure
E8 Error of the Air Exhaust Temp. Sensor at Digital Compressor
E9 Water-flow check trouble(wire controller and control board can recover automatically when the trouble is displayed
for the first and second times
EA Main unit detect that auxiliary unit’s quantity have decreased.
Eb Freeze-proof temperature sensor 1 in double-pipe heat interchanger error
EC Wire controller can not search the modules on line
ED Wire control and module unit communication error
Ed 1-hour consecutive 4-times PE protection
EE Wire control and computer communication error
EF Inlet water temperature sensor error
P0 System A high-pressure protection or discharge gas Temperature protection
P1 System A low-pressure protection
P2 System B high-pressure protection or discharge gas Temperature protection
P3 System B low-pressure protection
P4 System A current protection
P5 System B current protection
P6 System A Condenser high-Temperature protection
P7 System B Condenser high-Temperature protection
P8 Digital compressor discharge Temperature protection, when it is above 125℃
Pb System anti-freeze protection
PE Low-temperature protection of double-pipe heat interchanger
F1 Eprom failure
F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved)

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SQ Series Portable Chiller Error Code

Error = Pr Off
Description = Brown Out Indication
Cause/Corrective Action = The Pr Off code will be indicated on the display if the chiller is running and main power is discontinued or
drops more than 10% below the normal operating voltage, the unit will shut down and the Pr OFF fault will
be indicated on the digital displays. Pressing the Power button will clear this fault condition

Error = 101
Description = EEPROM Failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 102
Description = A/D Converter Failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 103
Description = Controller serial bus failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 105
Description = CJC Error
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 109
Description = Unused memory byte changed
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 110
Description = Device or communication configuration change or invalid
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 111
Description = Fixed parameter associated with range invalid
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 112
Description = Setpoint out of temperature range
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 113
Description = RAM hardware failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 114
Description = Invalid device configuration
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 117
Description = Invalid program counter
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 118
Description = Infinite software loop detect
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 119
Description = Data direction register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 120
Description = Communication data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 121
Description = Timer data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 122
Description = Hardware watchdog data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 123
Description = Option data register failure
Cause/Corrective Action = Controller requires servicing. Contact Manufacturer for repair or replacement

Error = 125
Description = Jumper for temperature controller missing
Cause/Corrective Action = The Err 125 fault code will be indicated on the digital displays if the jumper is loose or missing on the
control circuit board

Error = 126
Description = Pump overload on chiller
Cause/Corrective Action = The Err 126 fault code will be indicated on the digital displays if the pump overload has tripped. In orderto reset this fault; press the Alarm Reset button after resetting the pump overload inside the electrical enclosure.

Error = 127
Description = Compressor overload on chiller
Cause/Corrective Action = The Err 127 fault code will be indicated on the digital display if the internal compressor motor winding thermostat or the external compressor motor overload has tripped. This fault will also shut off the pump.
The internal compressor motor winding thermostat will automatically reset when the temperature drops back into the normal operating range. The external compressor motor overload must be manually reset.
The compressor motor overload is located inside the electrical enclosure. Once the internal compressor motor winding thermostat resets and/or the external compressor overload has been reset, press the Alarm Reset button to reset the fault.

Error = 128
Description = Chiller high temperature safety
Cause/Corrective Action = The Err 128 fault code will be indicated on the digital displays if the chiller has been shut off due to the high temperature safety.
This safety will shut off both the pump and compressor. This safety is triggered if the To Process temperature rises more than 10°F (5.5°C) above the maximum operating temperature for that particular chiller.
The maximum operating temperature for each chiller is noted on the nameplate. The To Process temperature must be over the limit for three minutes before this safety will be triggered, and the fault is defeated for a period of thirty minutes from the time the Start button is pressed or the Set
Point temperature is changed. Pressing the Alarm Reset button will reset this fault.

Error = 129
Description = Input Contact Chatter
Cause/Corrective Action =

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McQuay Chiller OM AGZ-1 Error Code

Error Code = E01
Name = Over current event while at constant speed
Cause(s) = The inverter output was short-circuited, or the motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF.
The dual-voltage motor is wired incorrectly

Error Code = E02
Name = Over current event during deceleration
Cause(s) = The inverter output was short-circuited, or the motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF.
The dual-voltage motor is wired incorrectly

Error Code = E03
Name = Over current event during deceleration
Cause(s) = The inverter output was short-circuited, or the motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF.
The dual-voltage motor is wired incorrectly

Error Code = E04
Name = Over current event during other conditions
Cause(s) = The inverter output was short-circuited, or the motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF.
The dual-voltage motor is wired incorrectly

Error Code = E05
Name = Overload protection
Cause(s) = When a motor overload is detected by the electronic thermal function, the inverter trips and turns OFF its output.

Error Code = E07
Name = Over voltage protection
Cause(s) = When the DC bus voltage exceeds a threshold, due to regenerative energy from the motor

Error Code = E08
Name = EEPROM error
Cause(s) = When the built-in EEPROM memory has problems due to noise or excessive temperature, the inverter trips and turns OFF its output to the motor.

Error Code = E09
Name = Under-voltage error
Cause(s) = A decrease of internal DC bus voltage below a threshold results in a control circuit fault This condition can also generate excessive motor heat or cause low torque. The inverter trips and turns OFF its output.

Error Code = E11 E22
Name = CPU error
Cause(s) = A malfunction in the built-in CPU has occurred, so the inverter trips and turns OFF its output to the motor

Error Code = E12
Name = External trip
Cause(s) = A signal on an intelligent input terminal configured as EXT has occurred. The inverter trips and turns OFF the output to the motor.

Error Code = E13
Name = USP
Cause(s) = When the Unattended Start Protection (LJSP) is enabled, an error occurred when power is applied while a Run signal is present. The inverter trips and does not go into Run Mode until the error is cleared.

Error Code = E14
Name = Ground fault
Cause(s) = The inverter is protected by the detection of ground faults between the inverter output and the motor during powerup tests. This feature protects the inverter, and does not protect humans

Error Code = E15
Name = Input over-voltage
Cause(s) = When the input voltage is higher than the specified value, it is detected 100 seconds after powerup and the inverter trips and turns OFF its output.

Error Code = E21
Name = Inverter thermal trip
Cause(s) = When the inverter internal temperature is above the threshold, the thermal sensor in the inverter module detects the excessive temperature of the power devices and trips, turning the inverter output OFF.

Error Code = E35
Name = Thermistor
Cause(s) = When a thermistor is connected to terminals {5} and [CM1] and the inverter has sensed the temperature is too high, the inverter trips and turns OFF the output.

Error Code = ---U
Name = Under-voltage (brownout) with output shutoff
Cause(s) = Due to low input voltage, the inverter turns its output OFF and tries to restart. If it fails to restart, then the alarm trips to record the under-voltage error event.

Note: If an EEPROM error (E08) occurs, be sure to confirm the parameter data values are still correct. If the power is turned OFF while the [RS] (Reset) intelligent input terminal is ON, an EEPROM error will occur when power is restored.

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