Test Operation & Troubleshooting & Maintenance
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1.4 Trial Run
Start the unit when there is no any problem for wiring and piping. After startup, check for the
electrostatic expansion valve, water pump, fan, and compressor to see if they work normally. When
there is any error, solve it according to the troubleshooting flowchart covered in this manual. However, if
the troubleshooting flowchart is still unhelpful, please contact GREE sales agent.
2 Error Code List
Ambient temperature sensor error
Defrost temperature sensor error
Discharge temperature sensor error
Suction temperature sensor error
Compressor internal overload protection
High discharge protection
Refrigerant loss protection
Heat pump-water pump protection
Solar kit-water pump protection
Swimming pool-water pump protection
Incorrect capacity DIP switch setting
Communication error between indoor and outdoor unit
Drive communication error
High pressure sensor error
Enthalpy-enhancing sensor error
Low pressure sensor error
Heat exchanger-leaving water temperature sensor error
Auxiliary heater-leaving water temperature sensor error
Heat exchanger-entering water temperature sensor error
Water tank water temperature sensor 1 error
Water tank water temperature sensor 2 error
Solar kit-entering water temp sensor
Solar kit-leaving water temp sensor
Swimming pool-entering water temp sensor
Swimming pool-leaving water temp sensor
Swimming pool-water temp sensor