Units Maintenance; Error Code List - Gree Heat Pump Water Heater Service Manual

HEAT PUMP WATER HEATER (NORTHERN EUROPE)

UNITS MAINTENANCE

Code Indication Error Name
Comp High-pressure
E1
protection
Comp Low- pressure
E3
protection
Comp Discharge temp
E4
protection
E5 Comp overload protection
E8 Fan 1 overload protection
b8 Fan 2 overload protection
F3 Defrost temp sensor failure
F5 Discharge temp sensor error
Outdoor ambient temp sensor
F7
EC Communication malfunction

1 ERROR CODE LIST

Comp High-pressure switch is broken or the wiring is loose.
The water in the tank is not enough.
The installation of tank temp sensor is not correct.
The gas valve and liquid valve are not fully open.
The thermal expansion valve can not work normally.
Comp Low-pressure switch is broken or the wiring is loose.
The system has leaked.
The fans stop running or reverse.
The resistance of temperature sensor is not correct.
The thermal expansion valve is blocked.
The system has leaked.
Mainboard of outdoor unit is damaged.
AC contactor is damaged.
The compressor wiring is not correct.
The voltage is not normal.
Overcurrent test board is damaged.
The refrigerant of the system is excessive.
Mainboard of outdoor unit is damaged.
The wire connecting the wiring terminals of the mainboard
breaks.
Mainboard of outdoor unit is damaged.
The wire connecting the wiring terminals of the mainboard
breaks.
The plug on temperature sensor is not correctly connected to the
socket on mainboard.
The resistance of temperature sensor is not correct.
The plug on temperature sensor is not correctly connected to the
socket on mainboard.
The resistance of temperature sensor is not correct.
The plug on temperature sensor is not correctly connected to the
socket on mainboard.
failure
The resistance of temperature sensor is not correct.
The communication line of the unit is not connected.
The communication line is not through.
The communication line of the unit is not connected correctly.
The two ends of communication line are not mounted with
magnetic ring.
The outdoor unit is not electrically powered.
MAINTENANCE
Cause of Error Code Control Description
Press ON/OFF key to clear
Press ON/OFF key to clear
Press ON/OFF key to clear
Press ON/OFF key to clear
Press ON/OFF key to clear
Press ON/OFF key to clear
Auto resume
Auto resume
Auto resume
Auto resume
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