Gree Multi VRF Error Codes
E1-Compressor high-pressure protection-High-pressure Switch -The high pressure protection value is 4.2MPa. When it is detected three times successively that a compressor is under high pressure, this compressor will be stopped. In this case, error code E1 will be displayed and the run indicator will blink.
E2-Indoor antifreeze protection -Evaporator sensor -When it is detected for 10 minutes successively that Tevap. is ≤-2℃ (varying with indoor unit), the antifreeze protection will be activated, in which case the outdoor unit will immediately shut off the indoor electronic expansion valve and the capacity will be set to “0”.
E3– Compressor low-pressure protection Low-pressure Switch When the low pressure reaches the protection value (absolute pressure: 0.15MPa), the low pressure switch will be cut off, in which case the low pressure protection will be displayed.
E4– Compressor exhaust temperature protection- Exhaust temperature sensor -When the exhaust temperature (Texhau.) is equal to and higher than 113℃, the compressor will be stopped. Upon the first occurrence of exhaust protection, the error code E4 will be displayed. When the exhaust temperature is lower than TR℃, the compressor will resume to operation after it has been stopped for 3 minutes. The compressor can resume to operation for the first two times. But if this occurs three times successively in 1 hour, the unit must be disconnected from power supply before it can restarted.
E5– Frequency converter overcurrent protection- Compressor drive- The drive board of variable frequency compressor is incurred to error. For details on the error message, please refer to the Display Code on Digital Tube of Outdoor Unit.
E6– Communication error- Communication- The mainboard of indoor unit or the wired control is incurred to communication error with outdoor unit. The indoor unit incurred to communication error will be stopped and display the error code.
E7– Mode conflict- User operation- The run mode of the unit that is started later is inconsistent to the mode that is started earlier. Only the cooling and dry mode has possible mode conflict against the heat mode. For fan mode, there is no mode conflict against the cooling, dry or heat mode. In case mode conflict occurs, the indoor unit with mode conflict will display E7 and be stopped.
E9– Water full protection- Water pump- When water full is detected for 8 seconds successively, the system will enter into water-full protection state, in which case the wired controller will display E9 and give out alarm. In case of water-full protection under each mode, the other loads of the indoor unit will be stopped, except that the water pump will remain working and give out alarm. In this case, the outdoor unit shall adjust the capacity output accordingly
F0– Indoor ambient temperature sensor error- Indoor room sensor- The indoor unit incurred to sensor error will display error code and be stopped.
F1– Indoor coil inlet temperature sensor error- Indoor coil inlet temperature sensor- The indoor unit incurred to sensor error will display error code and be stopped.
F2– Indoor coil middle temperature sensor error- Indoor coil middle temperature sensor- The indoor unit incurred to sensor error will display error code and be stopped.
F3– Outdoor coil inlet temperature sensor error- Indoor coil exit temperature sensor- The indoor unit incurred to sensor error will display error code and be stopped.
F4– Outdoor ambient temperature sensor error- Outdoor environment sensor- Test for 30 seconds successively to check if the temperature sensor is disconnected. If yes, alarm will be sent; otherwise no processing will be made. If the controller of outdoor unit detects failure of outdoor sensor under open circuit, short circuit and excess of test value, the outdoor unit will execute the following default actions, that is, the error message will be sent to each indoor unit and the error code will be displayed via error indicator or wired controller. When the outdoor ambient temperature is lower than -5℃, the disconnection failure of outdoor inlet, middle and exit sensors in shield room will be processed as under -30℃.
F7– Outdoor defrost temperature sensor error- Outdoor Defrost Sensor- Test for 30 seconds successively to check if the temperature sensor is disconnected. If yes, alarm will be sent; otherwise no processing will be made. If the controller of outdoor unit detects failure of outdoor sensor under open circuit, short circuit and excess of test value, the outdoor unit will execute the following default actions, that is, the error message will be sent to each indoor unit and the error code will be displayed via error indicator or wired controller. When the outdoor ambient temperature is lower than -5℃, the disconnection failure of outdoor inlet, middle and exit sensors in shield room will be processed as under -30℃.
F9– Exhaust temperature sensor error- Exhaust temperature sensor- Test for 30 seconds successively to check if the temperature sensor is disconnected. If yes, alarm will be sent; otherwise no processing will be made. If the controller of outdoor unit detects failure of outdoor sensor under open circuit, short circuit and excess of test value, the outdoor unit will execute the following default actions, that is, the error message will be sent to each indoor unit and the error code will be displayed via error indicator or wired controller. When the outdoor ambient temperature is lower than -5℃, the disconnection failure of outdoor inlet, middle and exit sensors in shield room will be processed as under -30℃.
Error Code of Duct-type Unit
Prevention against low temperature E2 & Error with oil temperature sensor 2 (digital) Fb
Outdoor ambient temperature sensor error F4 & Indoor ambient temperature sensor error F0
Indoor tube-inlet sensor error F5 & Exhaust overtemperature E4
Outdoor tube-middle sensor error F6 & Low-pressure protection E3
Outdoor tube-exit sensor error F7 & Overcurrent Protection E5
Error with exhaust temperature sensor 1 (fixed-frequency) F8 & High-pressure protection E1
Indoor tube-inlet sensor error F1 & Communication error E6
Indoor tube-middle sensor error F2 & High-pressure valve error Fc
Indoor tube-exit sensor error F3 & Low-pressure valve error Fd
Error with exhaust temperature sensor 2 (fixed-frequency) F9 & Water-full protection (Cassette) Eb
Error with oil temperature sensor 1 (fixed-frequency) FA
Floor Standing: Lantianshi, qingliangwangzi, fengsheng series
Indoor tube-inlet sensor error F1 & Indoor tube-middle sensor error F2
Indoor tube-exit sensor error F3 & Outdoor ambient temperature sensor error F4
Outdoor tube-inlet sensor error F5 & Outdoor ambient temperature sensor error F6
Outdoor tube-exit sensor error F7 & Error with exhaust temperature sensor 1 (fixed-frequency) F8
Error with exhaust temperature sensor 2 (digital) F9 & Error with exhaust temperature sensor 2 (digital) FA
Error with oil temperature sensor 2 (digital) Fb & Indoor ambient temperature sensor error F0
Prevention against low temperature E2 & High-pressure protection E1
Low-pressure protection E3 & Exhaust overtemperature E4
Overcurrent Protection E5 & Communication error E6
Mode conflict E7 & High-pressure valve error Fc
Low-pressure valve error Fd
Display Code on Digital Tube of Outdoor Mainboard
DC overvoltage protection PH E5 & Input overcurrent protection PA E5
Module overheat protection P8 E5 & Jumper fault C5 No display
Current test circuit fault Pc E5 & Recharging circuit fault PU E5
Module temperature sensor fault P7 E5 & High-pressure protection E1 E1
Compressor overcurrent protection P5 E5 & Low-pressure protection E3 E3
DC undervoltage protection PL E5 & Exhaust protection E4 E4
Compressor startup failure Lc E5 & Compressor overload protection H3 E5
PFC module protection Hc E5 & Communication fault (between indoor / outdoor unit and wired controller) E6 E6
Drive resetting and stop P0 E5 & Outdoor ambient temperature sensor error F4 F4
Protection of compressor against loss of synchronization H7 E5 & Indoor coil inlet temperature sensor error F5 F5
Compressor protection against loss of phase Ld E5 & Indoor coil middle temperature sensor error F6 F6
Inverter drive communication fault P6 E5 & Outdoor coil outlet temperature sensor error F7 F7
IPM module protection H5 E5 & Exhaust temperature sensor error F9 F9
