Gree Versati II+ Owner's Manual page 9

Air-to-water Heat Pump Monobloc Versati
user can set the priority of these two modes based on the needs. The default priority is heat pump.
That is under the default setting, if heating mode exists together with the water heating mode, the
heat pump gives priority to heating. In that case, water heating can only realized with e-heater of
the water tank. Inversely, the heat pump gives priority to water heating and switches to heating after
finishing water heating.
Emergency mode: this mode is only available for heating and water heating. When the monobloc
unit stops due to malfunction, enter the corresponding emergency mode; as to heating mode, after
entering the emergency mode, heating can only be realized through e-heater .When the setting
outflow temperature or indoor temperature is reached, the e-heater will stop running; as to water
heating mode, the e-heater stops while the e-heater of water tank runs. When the setting temperature
or water tank is reached, the e-heater will stop running.
Quick water heating: in quick water heating mode, the unit runs according to the water heating
control of heat pump and the e-heater of water tank runs at the same time.
Forced Operation Mode: this mode is only used for refrigerant recovery and debugging for the
unit.
Holiday mode:this mode is only available for heating mode. This mode is set to keep indoor
temperature or leaving water temperature in a certain range, so as to prevent water system of the
unit from freezing or protect certain indoor articles from freezing damage. When the unit stops due to
malfunction, the two e-heaters of the unit will run.
Disinfection mode: in this mode, the water heating system can be disinfected. When starting up
the disinfection function and setting corresponding time to meet the requirement of disinfection mode,
the function will start. After the setting temperature is reached, this mode will terminate.
Weather-dependent Operation: this mode is only available for space heating or space cooling.
In Weather- dependent mode, the setting value (remote room air temperature or leaving water
temperature) is detected and controlled automatically when the outdoor air temperature is changed.
Quiet mode: Silent mode is available in cooling, heating and water heating mode. In silent mode,
the unit will reduce the running noise via automatic control.
Floor commissioning: this function is intended to preheat the floor periodically for the initial use.
Air removal of the water system: this function is intended to replenish water and remove air in
the water system to make the equipment run at the stabilized water pressure.
Solar water heater: when the condition for starting the solar water heater is satisfied, the solar
heater will start to heat the circulation water. Then the heated water will go to the water tank and
exchange heat with water in it. At any condition, the solar water heater will be given priority for startup
so as for energy conservation.
Backup heat source: when the outdoor temperature is lower than the set point for starting the
backup heat source and the unit is under the error condition and the compressor has stopped for
three minutes, then the backup heat source will start to supply heat or hot water to the room.
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