COOPER & HUNTER AC Error Codes
E0 – excess of the lower threshold starting voltage. Run frequency control.
Е1 – excess pressure. Starting the compressor protection system.
E2 – the threat of freezing of the indoor unit. Start the security system.
E3 – lowering the allowable pressure threshold. Starting the compressor protection system.
E4 – exceeding the permissible temperature of the injection tube. Start the security system.
E5 – compressor overload. Start the security system.
E6 – connection / operation error signal or power cable.
E7 – the established modes of the split system do not match.
E8 – evaporator overheating. Start the security system.
Е9 – launch of the protection system against cold air supply in thermal mode.
F0 – failure of the temperature discharge sensor.
F1 – evaporator temperature sensor failure.
F2 – failure of the condenser temperature sensor.
F3 – breakdown of the air temperature sensor in the system.
F4 – failure of the supercharger temperature sensor.
F5 – failure of the compressor discharge tube sensor.
F6 – condenser overheating.
F7 – insufficient lubrication in compressor crankcase.
F8 – the compressor is overloaded. Start the security system.
F9 – exceeding the maximum temperature of the condenser due to the decrease in fan speed during cooling. The compressor is overloaded.
FF – one of the phases is missing / an error in the operation of the phase monitor.
FA – condenser / evaporator overheating. Start the security system.
FH – the threat of freezing evaporator. Start the security system.
H0 – overheating protection activated.
H1 – condenser defrost mode activated.
H2 – error in the electrostatic filter. Start the security system.
H3 – exceeding the permissible temperature of the compressor. Start the security system.
H4 – system error.
H5 – start the protection system of the IPM inverter unit.
H6 – sensor failure. Lost feedback signal from fan motor.
H7 – the compressor is faulty.
H8 – drainage system is full. Launch protection.
H9 – failure of the electric heater of the indoor unit.