Outlet water
temperature sensor is
damaged
Inlet water
temperature sensor is
damaged
1# high pressure failure
1# low pressure failure
Protection of excessive
temperature of outlet
water during cooling
Protection of too low
temperature of outlet
water during cooling
Inlet and outlet water
temperature difference
is excessive
1# compressor tube
temperature protection
Photoresistor damage
Humidity sensor failure
5
Operating Tips
1.
Set a suitable room temperature; excessively low room temperature is not good for your health
and wastes electricity. Avoid frequent temperature setting changes.
2. During prolonged operation, ventilate the room occasionally by opening a Window.
3. During cooling or heating, close doors and windows to keep the cool air in the room.
4. The other heat producing equipment in the room should keep at least 1m distance to air
conditioner, or it can influence the air return temperature.
5. If the unit is not used for a prolonged time, the power should be turned off.
Sensor short circuit or open
EE:21
circuit
Sensor short circuit or open
EE:22
circuit
1# high pressure switch
EE:31
disconnected
1# low pressure switch
EE:41
disconnected
The outlet water temperature
EE:51
during cooling is higher than
the value of 〖C1〗
The outlet water temperature
EE:52
during cooling is lower than the
value of 〖C2〗
The temperature difference
between the inlet and outlet
EE:53
water is higher than the value
of 〖C3〗
1# compressor cooling
EE:61
temperature is too low / heating
temperature is too high
Open circuit
EE:70
Open circuit
EE:71
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Stop unit
Stop unit
Stop 1#
compressor
Stop 1#
compressor
Stop unit
Stop unit
Stop unit
Stop unit
Stop unit
Stop unit
12
After repair or
replacement of the sensor
After repair or
replacement of the sensor
After repair
After repair
After repair
After repair
After repair
Automatic recovery
After repair or
replacement of the sensor
After repair or
replacement of the sensor
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