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
The indoor unit displays C0; the unit may not respond to the remote or may operate in a limited mode.
EEPROM or Configuration Parameter Error
C5
The display shows C5; the unit may not start or may behave erratically.
Jumper or Configuration Error on PCB
E1
Indoor unit stops and displays E1; the unit may not respond to the remote; sometimes it restarts briefly then shuts down again.
High Pressure Protection (Refrigeration System Overpressure)
E2
Indoor unit stops cooling and displays E2; this may occur shortly after startup, especially in cooling mode.
Evaporator Coil Freeze Protection / Anti-freeze Protection
E3
The unit stops and displays E3; this may occur during cooling or heating; the outdoor unit may shut down abruptly.
Low Pressure Protection / Refrigerant System Underpressure
E4
Indoor unit stops and displays E4; this often occurs in heating mode on heat pump models, sometimes after long operation.
Compressor Discharge High Temperature Protection
E5
The unit displays E5 and stops; this may occur at startup or randomly during operation.
Overcurrent Protection / Compressor Overload
E6
Indoor unit shows E6; the unit may not start or may run briefly then stop; this is often associated with communication loss between indoor and outdoor units.
Communication Failure Between Indoor and Outdoor PCB
E7
Indoor unit displays E7; the unit may not respond correctly to mode changes or may not start.
Mode Conflict / Indoor-Outdoor Mode Mismatch
E8
Indoor unit shows E8; the unit may shut down shortly after starting, often in cooling mode.
Indoor Fan Motor Overload / Overcurrent Protection
E9
Indoor unit displays E9; the unit may stop and beep; this is 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; the unit may not cool or heat properly; this often appears shortly after startup.
Refrigerant System Undercharge / Low Refrigerant Protection
F1
The indoor unit displays F1; the unit may run but with poor temperature control or may shut down.
Indoor Ambient Temperature Sensor (Room Sensor) Fault
F2
The indoor unit shows F2; the unit may stop or operate erratically, especially in cooling mode.
Evaporator Coil Temperature Sensor Fault
F3
Display shows F3; this is often associated with outdoor coil temperature sensor issues; the unit may not defrost correctly in heating mode.
Outdoor Coil Temperature Sensor Fault
F4
The indoor unit displays F4; the unit may stop heating or cooling; this is often related to the outdoor ambient temperature sensor.
Outdoor Ambient Temperature Sensor Fault
F5
The unit shows F5; this may limit operation or cause shutdown, especially in heating mode.
Outdoor Unit Overload / IPM Overheat Protection
F6
The indoor unit displays F6; the unit may not reach the set temperature or may cycle erratically.
Indoor Fan Speed Out of Control / Feedback Error
F7
Display shows F7; the unit may not operate in certain modes or may shut down unexpectedly.
Outdoor Fan Speed Abnormal / Feedback Error
F8
The indoor unit shows F8; the unit may limit capacity or shut down under heavy load.
Indoor Unit Overload / Heat Sink Overheat
F9
Display shows F9; the unit may not defrost properly or may shut down in heating mode.
Defrost Sensor or Logic Fault
H1
The indoor unit displays H1; the unit does not blow warm air for several minutes in heating mode.
Defrost or Preheating Indication (Not a Fault on Many Models)
H3
The unit displays H3 and stops, often after running for some time under heavy load.
Compressor Overload Protection
H4
The indoor unit displays H4; the unit may not start or may shut down quickly.
Inverter Module Protection / IPM Fault
H5
The display shows H5; the unit may not operate or may shut down immediately.
IPM Protection or Current Sensing Fault
P0
The unit displays P0; the compressor may not start or may shut down quickly.
DC Bus Voltage Protection
P1
The display shows P1; the unit may not start or may stop under heavy load.
Low Voltage Protection
P2
The unit displays P2; it may stop cooling or heating intermittently.
High Voltage Protection
P4
The display shows P4; the unit may stop and not restart until it has 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; there are no lights or display, and the remote has no effect.
No Power to Indoor Unit
Symptom
Indoor unit runs but no cooling; the 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 provides no heating in HEAT mode; the air remains cool or only slightly warm.
Heat Pump Heating Failure
Symptom
Loud humming, grinding, or metallic noise from the outdoor unit.
Outdoor Mechanical Noise / Fan or Compressor Issue
Symptom
Loud rattling or buzzing noise from the 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
The indoor unit vibrates excessively and makes a droning noise transmitted through the wall.
Indoor Unit Vibration / Poor Mounting
Symptom
The unit powers on, but the compressor and outdoor fan never start; only the indoor fan runs.
Outdoor Unit Not Starting
Symptom
Unit frequently turns on and off (short cycling) without reaching set temperature.
Short Cycling / Control or Sizing Issue
Symptom
Unit trips the circuit breaker immediately or shortly after starting.
Electrical Overload or Short Circuit
Symptom
Unpleasant musty or moldy smell from the 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 the outdoor unit during heating mode, forming ice or puddles.
Outdoor Defrost Water Drainage
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| C0 |
The indoor unit displays C0; the unit may not respond to the remote or may operate in a limited mode.
|
EEPROM or Configuration Parameter Error | View Details |
| C5 |
The display shows C5; the unit may not start or may behave erratically.
|
Jumper or Configuration Error on PCB | View Details |
| E1 |
Indoor unit stops and displays E1; the unit may not respond to the remote; sometimes it restarts briefly then shuts down again.
|
High Pressure Protection (Refrigeration System Overpressure) | View Details |
| E2 |
Indoor unit stops cooling and displays E2; this may occur shortly after startup, especially in cooling mode.
|
Evaporator Coil Freeze Protection / Anti-freeze Protection | View Details |
| E3 |
The unit stops and displays E3; this may occur during cooling or heating; the outdoor unit may shut down abruptly.
|
Low Pressure Protection / Refrigerant System Underpressure | View Details |
| E4 |
Indoor unit stops and displays E4; this often occurs in heating mode on heat pump models, sometimes after long operation.
|
Compressor Discharge High Temperature Protection | View Details |
| E5 |
The unit displays E5 and stops; this may occur at startup or randomly during operation.
|
Overcurrent Protection / Compressor Overload | View Details |
| E6 |
Indoor unit shows E6; the unit may not start or may run briefly then stop; this is often associated with communication loss between indoor and outdoor units.
|
Communication Failure Between Indoor and Outdoor PCB | View Details |
| E7 |
Indoor unit displays E7; the 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; the unit may shut down shortly after starting, often in cooling mode.
|
Indoor Fan Motor Overload / Overcurrent Protection | View Details |
| E9 |
Indoor unit displays E9; the unit may stop and beep; this is 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; the unit may not cool or heat properly; this often appears shortly after startup.
|
Refrigerant System Undercharge / Low Refrigerant Protection | View Details |
| F1 |
The indoor unit displays F1; the unit may run but with poor temperature control or may shut down.
|
Indoor Ambient Temperature Sensor (Room Sensor) Fault | View Details |
| F2 |
The indoor unit shows F2; the unit may stop or operate erratically, especially in cooling mode.
|
Evaporator Coil Temperature Sensor Fault | View Details |
| F3 |
Display shows F3; this is often associated with outdoor coil temperature sensor issues; the unit may not defrost correctly in heating mode.
|
Outdoor Coil Temperature Sensor Fault | View Details |
| F4 |
The indoor unit displays F4; the unit may stop heating or cooling; this is often related to the outdoor ambient temperature sensor.
|
Outdoor Ambient Temperature Sensor Fault | View Details |
| F5 |
The unit shows F5; this may limit operation or cause shutdown, especially in heating mode.
|
Outdoor Unit Overload / IPM Overheat Protection | View Details |
| F6 |
The indoor unit displays F6; the unit may not reach the set temperature or may cycle erratically.
|
Indoor Fan Speed Out of Control / Feedback Error | View Details |
| F7 |
Display shows F7; the unit may not operate in certain modes or may shut down unexpectedly.
|
Outdoor Fan Speed Abnormal / Feedback Error | View Details |
| F8 |
The indoor unit shows F8; the unit may limit capacity or shut down under heavy load.
|
Indoor Unit Overload / Heat Sink Overheat | View Details |
| F9 |
Display shows F9; the unit may not defrost properly or may shut down in heating mode.
|
Defrost Sensor or Logic Fault | View Details |
| H1 |
The indoor unit displays H1; the 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 |
The unit displays H3 and stops, often after running for some time under heavy load.
|
Compressor Overload Protection | View Details |
| H4 |
The indoor unit displays H4; the unit may not start or may shut down quickly.
|
Inverter Module Protection / IPM Fault | View Details |
| H5 |
The display shows H5; the unit may not operate or may shut down immediately.
|
IPM Protection or Current Sensing Fault | View Details |
| P0 |
The unit displays P0; the compressor may not start or may shut down quickly.
|
DC Bus Voltage Protection | View Details |
| P1 |
The display shows P1; the unit may not start or may stop under heavy load.
|
Low Voltage Protection | View Details |
| P2 |
The unit displays P2; it may stop cooling or heating intermittently.
|
High Voltage Protection | View Details |
| P4 |
The display shows P4; the unit may stop and not restart until it has 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; there are no lights or display, and the remote has no effect.
|
No Power to Indoor Unit | View Details |
| – |
Indoor unit runs but no cooling; the 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 provides no heating in HEAT mode; the air remains cool or only slightly warm.
|
Heat Pump Heating Failure | View Details |
| – |
Loud humming, grinding, or metallic noise from the outdoor unit.
|
Outdoor Mechanical Noise / Fan or Compressor Issue | View Details |
| – |
Loud rattling or buzzing noise from the 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 |
| – |
The indoor unit vibrates excessively and makes a droning noise transmitted through the wall.
|
Indoor Unit Vibration / Poor Mounting | View Details |
| – |
The unit powers on, but the compressor and outdoor fan never start; only the indoor fan runs.
|
Outdoor Unit Not Starting | View Details |
| – |
Unit frequently turns on and off (short cycling) without reaching set temperature.
|
Short Cycling / Control or Sizing Issue | 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 the 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 the outdoor unit during heating mode, forming ice or puddles.
|
Outdoor Defrost Water Drainage | View Details |
No matching codes found
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