AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
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4 Operation Instructions
4.1 On/Off Setting
Note: After energization and under normal communication, the LCD will display the water
temperature, time, and hot water volume (for models with dual temperature sensor) under both On and
Off states of the unit. It means the Off state if the LCD does not display the running mode, as shown in
the following figure.
4.2 Common Modes Setting
In the On state of the unit, press the MODE button to switch the operation modes in the following
sequence:
HOTWATER SAVE
PRESET
NIGHT
The HOTWATER mode is shown in the following figure.
4.3 Special Modes Setting
If the heat pump of a water heater equipped with an electrical heater is faulty, users can press and
hold MODE+RAPID for 5s in any mode under the state to enter the E-HEATER mode.
Note: The E-HEATER mode can be used only when the heat pump is faulty. In this case, contact the
aftersales service immediately.
The E-HEATER mode is shown in the following figure.
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