Gree
Gree Air Conditioners Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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C0
Indoor unit shows C0; unit may not respond to remote or may operate in a limited mode.
EEPROM or Configuration Parameter Error
C5
Display shows C5; unit may not start or may behave erratically.
Jumper or Configuration Error on PCB
E1
Indoor unit stops and displays E1; unit may not respond to remote; sometimes restarts briefly then shuts down again.
High Pressure Protection (Refrigeration System Overpressure)
E2
Indoor unit stops cooling and displays E2; may occur shortly after startup, especially in cooling mode.
Evaporator Coil Freeze Protection / Anti-freeze Protection
E3
Unit stops and displays E3; may occur during cooling or heating; outdoor unit may shut down abruptly.
Low Pressure Protection / Refrigerant System Underpressure
E4
Indoor unit stops and displays E4; often occurs in heating mode on heat pump models, sometimes after long operation.
Compressor Discharge High Temperature Protection
E5
Unit displays E5 and stops; may occur at startup or randomly during operation.
Overcurrent Protection / Compressor Overload
E6
Indoor unit shows E6; unit may not start or may run briefly then stop; often associated with communication loss between indoor and outdoor units.
Communication Failure Between Indoor and Outdoor PCB
E7
Indoor unit displays E7; unit may not respond correctly to mode changes or may not start.
Mode Conflict / Indoor-Outdoor Mode Mismatch
E8
Indoor unit shows E8; unit may shut down shortly after starting, often in cooling mode.
Indoor Fan Motor Overload / Overcurrent Protection
E9
Indoor unit displays E9; unit may stop and beep; often related to water drainage or freeze protection on some Gree models.
Water Overflow Protection / Condensate Pump or Float Switch Alarm
F0
Display shows F0; unit may not cool or heat properly; often appears shortly after startup.
Refrigerant System Undercharge / Low Refrigerant Protection
F1
Indoor unit displays F1; unit may run but with poor temperature control or may shut down.
Indoor Ambient Temperature Sensor (Room Sensor) Fault
F2
Indoor unit shows F2; unit may stop or operate erratically, especially in cooling mode.
Evaporator Coil Temperature Sensor Fault
F3
Display shows F3; often associated with outdoor coil temperature sensor issues; unit may not defrost correctly in heating mode.
Outdoor Coil Temperature Sensor Fault
F4
Indoor unit displays F4; unit may stop heating or cooling; often related to outdoor ambient temperature sensor.
Outdoor Ambient Temperature Sensor Fault
F5
Unit shows F5; may limit operation or cause shutdown, especially in heating mode.
Outdoor Unit Overload / IPM Overheat Protection
F6
Indoor unit displays F6; unit may not reach set temperature or may cycle erratically.
Indoor Fan Speed Out of Control / Feedback Error
F7
Display shows F7; unit may not operate in certain modes or may shut down unexpectedly.
Outdoor Fan Speed Abnormal / Feedback Error
F8
Indoor unit shows F8; unit may limit capacity or shut down under heavy load.
Indoor Unit Overload / Heat Sink Overheat
F9
Display shows F9; unit may not defrost properly or may shut down in heating mode.
Defrost Sensor or Logic Fault
H1
Indoor unit displays H1; unit does not blow warm air for several minutes in heating mode.
Defrost or Preheating Indication (Not a Fault on Many Models)
H3
Unit shows H3 and stops; often after running for some time under heavy load.
Compressor Overload Protection
H4
Indoor unit displays H4; unit may not start or may shut down quickly.
Inverter Module Protection / IPM Fault
H5
Display shows H5; unit may not operate or may shut down immediately.
IPM Protection or Current Sensing Fault
P0
Unit displays P0; compressor may not start or may shut down quickly.
DC Bus Voltage Protection
P1
Display shows P1; unit may not start or may stop under heavy load.
Low Voltage Protection
P2
Unit shows P2; may stop cooling or heating intermittently.
High Voltage Protection
P4
Display shows P4; unit may stop and not restart until cooled down.
Inverter Module Overheat Protection
Symptom
Burning or electrical smell from indoor or outdoor unit during operation.
Overheating Electrical Component
Symptom
Indoor unit blows air but airflow is very weak even on highest fan speed.
Restricted Indoor Airflow
Symptom
Indoor unit displays lights but louvers do not move; airflow direction cannot be adjusted.
Louver Motor or Linkage Failure
Symptom
Indoor unit does not power on at all; no lights or display; remote has no effect.
No Power to Indoor Unit
Symptom
Indoor unit runs but no cooling; fan blows room-temperature air even after 10–15 minutes in COOL mode.
Loss of Cooling Capacity / Refrigerant Circuit Fault
Symptom
Indoor unit runs but no heating in HEAT mode; air remains cool or only slightly warm.
Heat Pump Heating Failure
Symptom
Indoor unit vibrates excessively and makes droning noise transmitted through the wall.
Indoor Unit Vibration / Poor Mounting
Symptom
Loud humming, grinding, or metallic noise from outdoor unit.
Outdoor Mechanical Noise / Fan or Compressor Issue
Symptom
Loud rattling or buzzing noise from indoor unit during operation.
Indoor Mechanical Vibration / Loose Components
Symptom
Outdoor unit fan runs but compressor does not start; no cooling or heating.
Compressor Start Failure
Symptom
Remote control does not operate the indoor unit; no response to button presses.
Remote Control or IR Receiver Failure
Symptom
Unit frequently turns on and off (short cycling) without reaching set temperature.
Short Cycling / Control or Sizing Issue
Symptom
Unit powers on but compressor and outdoor fan never start; only indoor fan runs.
Outdoor Unit Not Starting
Symptom
Unit trips the circuit breaker immediately or shortly after starting.
Electrical Overload or Short Circuit
Symptom
Unpleasant musty or moldy smell from indoor unit when it starts.
Biological Growth on Evaporator Coil and Drain Pan
Symptom
Water dripping from the front of the indoor unit or down the wall during cooling operation.
Indoor Unit Water Leakage (Condensate Drain Problem)
Symptom
Water leaking from outdoor unit during heating mode, forming ice or puddles.
Outdoor Defrost Water Drainage
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| C0 |
Indoor unit shows C0; unit may not respond to remote or may operate in a limited mode.
|
EEPROM or Configuration Parameter Error | View Details |
| C5 |
Display shows C5; unit may not start or may behave erratically.
|
Jumper or Configuration Error on PCB | View Details |
| E1 |
Indoor unit stops and displays E1; unit may not respond to remote; sometimes restarts briefly then shuts down again.
|
High Pressure Protection (Refrigeration System Overpressure) | View Details |
| E2 |
Indoor unit stops cooling and displays E2; may occur shortly after startup, especially in cooling mode.
|
Evaporator Coil Freeze Protection / Anti-freeze Protection | View Details |
| E3 |
Unit stops and displays E3; may occur during cooling or heating; outdoor unit may shut down abruptly.
|
Low Pressure Protection / Refrigerant System Underpressure | View Details |
| E4 |
Indoor unit stops and displays E4; often occurs in heating mode on heat pump models, sometimes after long operation.
|
Compressor Discharge High Temperature Protection | View Details |
| E5 |
Unit displays E5 and stops; may occur at startup or randomly during operation.
|
Overcurrent Protection / Compressor Overload | View Details |
| E6 |
Indoor unit shows E6; unit may not start or may run briefly then stop; often associated with communication loss between indoor and outdoor units.
|
Communication Failure Between Indoor and Outdoor PCB | View Details |
| E7 |
Indoor unit displays E7; unit may not respond correctly to mode changes or may not start.
|
Mode Conflict / Indoor-Outdoor Mode Mismatch | View Details |
| E8 |
Indoor unit shows E8; unit may shut down shortly after starting, often in cooling mode.
|
Indoor Fan Motor Overload / Overcurrent Protection | View Details |
| E9 |
Indoor unit displays E9; unit may stop and beep; often related to water drainage or freeze protection on some Gree models.
|
Water Overflow Protection / Condensate Pump or Float Switch Alarm | View Details |
| F0 |
Display shows F0; unit may not cool or heat properly; often appears shortly after startup.
|
Refrigerant System Undercharge / Low Refrigerant Protection | View Details |
| F1 |
Indoor unit displays F1; unit may run but with poor temperature control or may shut down.
|
Indoor Ambient Temperature Sensor (Room Sensor) Fault | View Details |
| F2 |
Indoor unit shows F2; unit may stop or operate erratically, especially in cooling mode.
|
Evaporator Coil Temperature Sensor Fault | View Details |
| F3 |
Display shows F3; often associated with outdoor coil temperature sensor issues; unit may not defrost correctly in heating mode.
|
Outdoor Coil Temperature Sensor Fault | View Details |
| F4 |
Indoor unit displays F4; unit may stop heating or cooling; often related to outdoor ambient temperature sensor.
|
Outdoor Ambient Temperature Sensor Fault | View Details |
| F5 |
Unit shows F5; may limit operation or cause shutdown, especially in heating mode.
|
Outdoor Unit Overload / IPM Overheat Protection | View Details |
| F6 |
Indoor unit displays F6; unit may not reach set temperature or may cycle erratically.
|
Indoor Fan Speed Out of Control / Feedback Error | View Details |
| F7 |
Display shows F7; unit may not operate in certain modes or may shut down unexpectedly.
|
Outdoor Fan Speed Abnormal / Feedback Error | View Details |
| F8 |
Indoor unit shows F8; unit may limit capacity or shut down under heavy load.
|
Indoor Unit Overload / Heat Sink Overheat | View Details |
| F9 |
Display shows F9; unit may not defrost properly or may shut down in heating mode.
|
Defrost Sensor or Logic Fault | View Details |
| H1 |
Indoor unit displays H1; unit does not blow warm air for several minutes in heating mode.
|
Defrost or Preheating Indication (Not a Fault on Many Models) | View Details |
| H3 |
Unit shows H3 and stops; often after running for some time under heavy load.
|
Compressor Overload Protection | View Details |
| H4 |
Indoor unit displays H4; unit may not start or may shut down quickly.
|
Inverter Module Protection / IPM Fault | View Details |
| H5 |
Display shows H5; unit may not operate or may shut down immediately.
|
IPM Protection or Current Sensing Fault | View Details |
| P0 |
Unit displays P0; compressor may not start or may shut down quickly.
|
DC Bus Voltage Protection | View Details |
| P1 |
Display shows P1; unit may not start or may stop under heavy load.
|
Low Voltage Protection | View Details |
| P2 |
Unit shows P2; may stop cooling or heating intermittently.
|
High Voltage Protection | View Details |
| P4 |
Display shows P4; unit may stop and not restart until cooled down.
|
Inverter Module Overheat Protection | View Details |
| – |
Burning or electrical smell from indoor or outdoor unit during operation.
|
Overheating Electrical Component | View Details |
| – |
Indoor unit blows air but airflow is very weak even on highest fan speed.
|
Restricted Indoor Airflow | View Details |
| – |
Indoor unit displays lights but louvers do not move; airflow direction cannot be adjusted.
|
Louver Motor or Linkage Failure | View Details |
| – |
Indoor unit does not power on at all; no lights or display; remote has no effect.
|
No Power to Indoor Unit | View Details |
| – |
Indoor unit runs but no cooling; fan blows room-temperature air even after 10–15 minutes in COOL mode.
|
Loss of Cooling Capacity / Refrigerant Circuit Fault | View Details |
| – |
Indoor unit runs but no heating in HEAT mode; air remains cool or only slightly warm.
|
Heat Pump Heating Failure | View Details |
| – |
Indoor unit vibrates excessively and makes droning noise transmitted through the wall.
|
Indoor Unit Vibration / Poor Mounting | View Details |
| – |
Loud humming, grinding, or metallic noise from outdoor unit.
|
Outdoor Mechanical Noise / Fan or Compressor Issue | View Details |
| – |
Loud rattling or buzzing noise from indoor unit during operation.
|
Indoor Mechanical Vibration / Loose Components | View Details |
| – |
Outdoor unit fan runs but compressor does not start; no cooling or heating.
|
Compressor Start Failure | View Details |
| – |
Remote control does not operate the indoor unit; no response to button presses.
|
Remote Control or IR Receiver Failure | View Details |
| – |
Unit frequently turns on and off (short cycling) without reaching set temperature.
|
Short Cycling / Control or Sizing Issue | View Details |
| – |
Unit powers on but compressor and outdoor fan never start; only indoor fan runs.
|
Outdoor Unit Not Starting | View Details |
| – |
Unit trips the circuit breaker immediately or shortly after starting.
|
Electrical Overload or Short Circuit | View Details |
| – |
Unpleasant musty or moldy smell from indoor unit when it starts.
|
Biological Growth on Evaporator Coil and Drain Pan | View Details |
| – |
Water dripping from the front of the indoor unit or down the wall during cooling operation.
|
Indoor Unit Water Leakage (Condensate Drain Problem) | View Details |
| – |
Water leaking from outdoor unit during heating mode, forming ice or puddles.
|
Outdoor Defrost Water Drainage | View Details |
No matching codes found
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