The GREE Error Code in air conditioning allows the technician or user of air conditioning equipment to relate the possible cause of a certain equipment failure.
GREE Split Type Air Conditioner:
| Error codes | Meaning |
|---|---|
| E1 | High pressure protection of refrigerant system. During cooling and drying operations, except when the indoor fan is operating, all loads stop working. During heating operation, the whole unit stops. |
| E2 | Anti-freeze protection. During cooling and drying operation, the compressor and outdoor fan stop while the indoor fan runs. |
| E3 | Compressor low pressure protection. The entire unit stops. |
| E4 | Compressor exhaust high temperature protection. During cooling and drying operation, the compressor and outdoor fan stop while the indoor fan runs. During heating operation, all loads stop. Please refer to malfunction analysis (discharge, overload protection). |
| E5 | AC overcurrent protection. During cooling and drying operation, the compressor and outdoor fan stop while the indoor fan runs. During heating operation, all loads stop. |
| E6 | Communication failure between the indoor unit and the outdoor unit. During cooling operation, the compressor stops while the indoor fan motor runs. During heating operation, the entire unit stops. Refer to the corresponding fault analysis. |
| E8 | High temperature protection. During cooling operation: the compressor will stop while the indoor fan will run. During heating operation, the whole unit stops. Please refer to the malfunction analysis (overload, high temperature resistant). |
| F0 | Protection against coolant leaks |
| F1 | Indoor ambient sensor open or short circuit |
| F2 | Inner tube sensor open or short circuit |
| F3 | Outdoor ambient sensor open or short circuit. The unit will stop working when it reaches the set temperature. During cooling and drying operation, the compressor stops and the indoor fan runs; during heating operation, the whole unit stops working. |
| F4 | Outdoor pipe sensor open or short circuit. During cooling and drying operation, the compressor stops while the indoor fan runs; During heating operation, the whole unit will stop working. The outdoor temperature sensor is not connected well or is damaged. Check it by referring to the temperature sensor resistance table. |
| F5 | Exhaust sensor open or short circuit. Outdoor discharge temperature sensor is open/short circuit. During cooling and drying operation, the compressor will shut off after running for about 3 minutes, while the indoor fan will run; during heating operation, the whole unit will stop after running for about 3 minutes. |
| F6 | Overload limit/droop frequency. All loads operate normally, while the compressor operating frequency decreases. Please refer to malfunction analysis (overload, high temperature resistant). |
| F8 | Over current limit/droop frequency. All loads operate normally, while the compressor operating frequency decreases. The input supply voltage is too low; The system pressure is too high and overloaded. |
| F9 | High exhaust temperature limit/droop frequency. All loads operate normally, while the compressor operating frequency decreases. |
| PH | The DC bus voltage is too high. During cooling and drying operation, the compressor will stop while the indoor fan will run; during heating operation, the whole unit will stop working. |
| P5 | Compressor phase overcurrent protection. During cooling and drying operation, the compressor will stop while the indoor fan will run; during heating operation, the whole unit will stop working. Please refer to malfunction analysis (IPM protection, out-of-step protection and phase overcurrent protection for compressor). |
| b5 | Inlet pipe sensor malfunction |
| L3 | Outdoor DC fan motor malfunction |
| b7 | Outlet pipe sensor malfunction |
| FC | Door malfunction |
| FAITH | Compressor overload sensor malfunction |
| C5 | Jumper cap malfunction protection. Remote control or control panel operation is available, but the unit will not operate. There is no jumper cap on the controller. The jumper cap is not inserted properly and firmly. The jumper cap is damaged. The controller is damaged. |
| H1 | Anti-freeze. Defrosting will occur in heating mode. The compressor will operate while the indoor fan will stop working. This is the normal state. |
| H2 | Protection against static cleaning dust |
| H3 | Compressor overload protection. During cooling and drying operation, the compressor will stop while the indoor fan will work; During heating operation, the whole unit will stop working. |
| H4 | Abnormal system protection. During cooling and drying operation, the compressor will stop while the indoor fan will work; During heating operation, the whole unit will stop working. |
| H5 | MIP protection. During cooling and drying operation, the compressor will stop while the indoor fan will work; During heating operation, the whole unit will stop working. |
| H6 | There is no feedback from the indoor fan motor. The indoor fan, outdoor fan, compressor and electric heating tube stop working. 2 minutes later, the 4-way valve stops; the horizontal louver stops at the current position. |
Error in Gree Cassette type air conditioning:
| Error codes | Solution |
|---|---|
| E1 | High pressure protection. If the outdoor unit detects that the high pressure switch is off for 3 consecutive seconds, high pressure protection will occur. All loads (except the 4-way valve in heating mode) will be turned off. In this case, all buttons and signals on the remote controller except the ON/OFF button will be disabled and the system will not automatically recover. Turn off the unit or re-energize it after cutting off the power to remove this protection. |
| E2 | Indoor coil freeze protection. If the indoor unit detects that the evaporator temperature is lower than the protective temperature value after the unit has been operating for a period of time in subcooling or dry mode, the unit will report this fault, in which case the compressor and outdoor fan motor will stop. The unit will not operate until the evaporator temperature is higher than the protective temperature value and the compressor stops for 3 min. |
| E4 | Compressor discharge high temperature protection. If the outdoor unit detects that the discharge temperature is higher than the protection temperature value, the unit will report high discharge temperature protection. If the protection occurs more than 6 times, the unit cannot recover automatically. Turn off the unit or re-energize it after cutting off the power to reset this protection. |
| E6 | Communication malfunction. If the outdoor unit does not receive data from the indoor unit, a communication malfunction will be reported. If there is an abnormality in the communication between the display board and the indoor unit, a communication malfunction will be reported. |
| E8 | Low indoor airflow. If the indoor unit does not receive the signal from the indoor fan motor for 30 consecutive seconds when the fan motor is running, a malfunction of the indoor fan motor 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 automatically recover. Turn off the unit or re-energize it after cutting off the power to eliminate this malfunction. |
| E9 | Condensate overflow protection. If the indoor unit detects the condensate overflow switch warning for 8 consecutive seconds, the system will enter condensate overflow protection. The unit will shut down and will not recover automatically. Turn off the unit and then turn it on to eliminate this malfunction. |
| F0 | Indoor ambient temperature sensor malfunction at the return air inlet. If the indoor unit detects that the indoor ambient temperature sensor has an open circuit or a short circuit for 5 consecutive seconds, the indoor ambient temperature. Sensor malfunction will be reported. The unit may automatically resume operation after the malfunction disappears. If the indoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit will operate normally. |
| F1 | Indoor evaporator coil temperature sensor malfunction. If the indoor unit detects that the evaporator temperature sensor has an open circuit or a short circuit for 5 consecutive seconds, an evaporator temperature sensor malfunction will be reported. The unit may automatically resume operation after the malfunction disappears. If the evaporator temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit will operate normally. |
| F2 | Indoor condenser coil temperature sensor malfunction. If the outdoor unit detects an open circuit or short circuit in the condenser coil temperature sensor for 5 consecutive seconds, a condenser coil temperature sensor malfunction will be reported. The unit may automatically resume operation after the malfunction disappears. If a condenser temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit will operate normally. |
| F3 | Outdoor ambient temperature sensor malfunction. If the outdoor unit detects an open circuit or short circuit in the outdoor ambient temperature sensor for 5 consecutive seconds, an outdoor ambient temperature sensor malfunction will be reported. The unit may automatically resume operation after the malfunction disappears. If an outdoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit will operate normally. |
| F4 | Compressor discharge temperature sensor malfunction. If the outdoor unit detects that the compressor discharge temperature sensor has an open circuit or a short circuit for 5 consecutive seconds after the compressor has been running for 3 minutes, an outdoor discharge temperature sensor malfunction will be reported. The unit may automatically resume operation after the malfunction disappears. |
| F5 | Wired Controller Temperature Sensor Malfunction If the Wired Tether Controller detects an open or short circuit in its temperature sensor for 5 consecutive seconds, a Wired Controller Temperature Sensor Malfunction will be reported. |
| H1 | Defrost mode. The system is defrosting the outdoor coil. |
| H3 | Compressor overload protection. If the outdoor unit detects that the compressor overload switch is open within 3 consecutive seconds, the unit will report compressor overload protection. If the fault occurs successively for 3 times, the unit will not automatically recover. Turn off the unit or re-energize it to remove this protection. |
| H4 | Overload protection. If the indoor unit detects that the evaporator coil temperature is higher than the protective temperature value, the unit will report overload protection. The unit will restart operation after the evaporator temperature is lower than the protective temperature value and the compressor stops for 3 minutes. If the protection occurs more than 6 times, the unit will not recover automatically. Turn off the unit or re-energize it to remove this protection. |
| H6 | Outdoor fan motor malfunction. If the outdoor unit does not receive a feedback signal from the outdoor fan motor for 30 consecutive seconds when the fan motor is running, an outdoor fan motor malfunction will be reported. In this case, the unit may automatically resume operation after stopping. If the malfunction occurs 6 times within one hour, the unit will not automatically recover. Turn off the unit or re-energize it to eliminate this malfunction. |
| U7 | Malfunction of reversing valve or 4-way valve. After the compressor starts to operate in heating mode, if the outdoor unit detects that the difference between the evaporator temperature and the indoor ambient temperature is lower than the protection value for 10 consecutive minutes, a reversing valve malfunction will be reported and the outdoor unit will stop operating. If the malfunction occurs 3 times, the unit will not automatically recover. Turn off the unit or re-energize it to eliminate this malfunction. |
GREE Cosy Series Inverter:
| Fault codes | Solutions |
|---|---|
| E1 | High system pressure protection. |
| E2 | Antifreeze protection |
| F0 | In the absence of coolant |
| E4 | High compressor discharge temperature protection |
| E5 | Overvoltage protection |
| E6 | Communication malfunction |
| E8 | High temperature resistant protection |
| EE | EEPROM malfunction |
| EU | Limit/decrease frequency due to high module temperature |
| C5 | Bridge cover malfunction protection |
| fo | Refrigerant collection: nominal cooling mode |
| F1 | The indoor ambient temperature sensor is open/shorted |
| F2 | Indoor evaporator temperature sensor is open/shorted |
| F3 | The outdoor ambient temperature sensor is open/shorted |
| F4 | The outdoor condenser temperature sensor is open/shorted |
| F5 | Outdoor discharge temperature sensor is open/shorted |
| F6 | Limit/reduce frequency due to overload |
| F8 | Frequency drop due to overcurrent. |
| F9 | Decreased frequency due to high air discharge. |
| FH | Limit/reduce frequency due to antifreeze |
| PH | DC busbar voltage is too high |
| PL | DC busbar voltage is too low |
| P0 | Minimum compressor frequency in test state |
| P1 | Nominal frequency of the compressor in test condition |
| P2 | Maximum compressor frequency in test state |
| P3 | Intermediate frequency of the compressor in test condition. |
| P5 | Phase current overcurrent protection for compressor. |
| PU | Capacitor charging malfunction |
| P7 | Module temperature sensor circuit malfunction |
| P8 | High temperature protection module |
| H0 | Decrease in frequency due to high temperature resistance during heating operation |
| H2 | Protection against static dust |
| H3 | Overload protection for compressor |
| H4 | The system is abnormal |
| H5 | MIP protection |
| H5 | The module temperature is too high |
| H6 | The internal motor (fan motor) does not work |
| H7 | Compressor desynchronization |
| HC | PFC protection |
| L3 | Outdoor DC fan motor malfunction |
| L9 | Power protection |
| LP | The indoor unit and outdoor unit do not match |
| LC | Failed start |
| U1 | Malfunction of the phase current detection circuit for the compressor. |
| U3 | DC busbar voltage drop malfunction |
| U5 | Complete unit current detection malfunction. |
| U7 | The four-way valve is abnormal. |
| U9 | Outdoor unit zero crossing malfunction |
GREE Ductless Heat Pump:
| C5 | Indoor Configuration Jumper/Missing Configuration Jumper on Indoor Control Board |
| LP | Indoor/outdoor units do not match/indoor and outdoor units do not match |
| E5 | High current protection/power supply is not stable and the voltage range is too large |
| E6 | Communication error/Bad wiring or communication failure |
| F1 | Indoor air temperature. Thermistor/bad connection or indoor air sensor failure |
| F2 | Indoor coil temperature. Thermistor/bad connection or indoor coil sensor failure |
| F3 | Outdoor air temperature. Thermistor/bad connection or outdoor ambient sensor failure |
| F4 | Outdoor coil temperature. Thermistor/bad connection or outdoor coil sensor failure |
| F5 | Compressor discharge temp. Thermistor/bad connection or discharge sensor failure |
| H3 | Compressor overload/low refrigerant charge protection |
| H5 | IPM module protection/IPM module temperature too high |
| H6 | Indoor fan malfunction/Indoor fan stopped or running too slow |
| H7 | Compressor timing/high pressure, low voltage or poor connections |
| U7 | 4-way valve malfunction/Poor connection, solenoid failure or valve malfunction. |
GREE portable air conditioner:
| Codes | Cause |
|---|---|
| H8 | The chassis is filled with water. Pour the water into the chassis. |
| F1 | Temperature sensor malfunction. |
| F2 | Evaporator temperature sensor malfunction. |
| F0 | There is a refrigerant leak. The system is blocked. Turn off the unit, unplug it. Wait 30 minutes. Plug the unit in and turn it on. If the code still appears, contact Customer Service. |
| H3 | Overload protection for compressor overload malfunction. Check if the unit is in a high temperature and high humidity environment. If the outside temperature or humidity is too high, turn off the unit. Wait until the outside temperature drops below 95°F (35°C). Check if the evaporator and condenser are blocked. If so, remove the objects. Turn off the unit. Wait for 30 minutes. |
| E8 | Overload malfunction. Check if the unit is in a high temperature and high humidity environment. If the outside temperature or humidity is too high, turn off the unit. Wait until the outside temperature drops below 95°F (35°C). Check if the evaporator and condenser are blocked. If so, remove the objects. Turn off the unit. Wait for 30 minutes. |
| F4 | The outer pipe temperature sensor is open/shorted. |
| E5 | Over voltage protection. Turn off the unit, unplug it. Wait 10 minutes. Plug the unit in and turn it on. |
