Gree VERSATI SERIES Service Manual Download Page 27

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Air to Water Heat Pump
Service Manual- Versati Series

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Forced Operation instantly makes the unit working in Cool/Heat mode for 15 minutes.

Note:

a. Before setting the forced operation,please turn off the unit;
b. When the forced cooling/Heating operation is set,press ON/OFF button in the control panel. The unit will

start running.

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d. After running 15 minutes under Forced Operation, the system will automatically stop operating.

Function code 3: Celsius/Fahrenheit switching

Temperature is displayed in Celsius or Fahrenheit.

Function code 4: Thermostat control

Code 4 is set as 1. The unit operation is controlled by the Thermostat;

Note

: Thermostat control only for space cooling and space heating;

Function code 5: Quick sanitary heating

If code 5 is set as 1 and sanitary heating is ON, both the heat pump and electric heater in water tank should

be turned on;

With code 5 set as 0 and sanitary heating ON, if the water tank temperature is below maximum water tank

temperature, only the heat pump will operate. If the water tank temperature is higher than maximum water tank
temperature, the heat pump will stop operating and electric heater in water tank will run.

Function code 6: Disinfection operation

Disinfection operation is special sanitary tank operation mode to kill and to prevent growth of viruses inside

the tank.

Function code 7: Holiday mode

If code 7 is set as 1, the system will automatically turn to space heating and other mode will automatically

be turned OFF. But at the same time if the unit running in emergency mode.

The system will not turn to holiday mode.

In the holiday mode, the outflow water temperature or remote room air temperature can not be set. In

holiday mode, the icon

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Function code 8: Setting priority when cooling demand and sanitary heating demand are required

at the same time

If code 8 is set as 0,that means priority is cooling operation. The heat pump will always run in space

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hand, If code 8 is set as 1, that means priority is sanitary heating. The sanitary water is heated by heat pump
and electric heater. In that case, space cooling can not act when sanitary water is heated. When sanitary water
heating is stopped, the heat pump will turn to space cooling.

Function code 9: Setting priority when heating demand and sanitary heating demand are required

at the same time

If code 9 is set as 0, that means priority is heating operation. The heat pump will always run in space

heating (include floor heating) mode. In that case, sanitary water is only heated by electric heater. On the
other hand, if code 9 is set as 1, that means priority is sanitary heating. Sanitary water is heated by heat pump
and electric heater. Space heating can not act when sanitary water is heated. When sanitary water heating is
stopped, the heat pump will turn to space heating.

Function code 10: Setting status of back-up heater(indoor unit)

If code 10 is set as 1, half capacity of back-up heater in the indoor unit can be turned into use when the out-

door temperature is below the set value in code 20.

If code 10 is set as 2, full capacity of back-up heater in the indoor unit can be turned into use when the out-

door temperature is below the set value in code 20.

Function code 11: Setting start date of disinfection operation

Value of function code 11 determines the date when disinfection mode is running. ’0’ stands for Sunday, ’1’

for Monday … and ’6’ for Saturday.

Function code 12: Setting start time in 24 hours of disinfection operation

Value of function code 12 determines the time when the disinfection mode is running. ’00’ stands for

0:00am, ’01’ for 01:00am… ’22’ for 22:00 and ’23’ for 23:00pm.

Function code 13: Metal Base (pedestal) heater