Judgment of too small
heating water flow
Number of pressure
sensors
The above operating parameters have been adjusted to the best state according to the laboratory test results
before leaving the factory. If there is no special requirement, please do not adjust the above parameter values to
prevent the machine from being unable to operate normally or even being damaged due to parameter changes.
3. Fault Code Table
Fault code of
outdoor unit
Fault code
on liner
controller
Low voltage/over voltage
protection
The input voltage is too high or too low
Overload Current protection
The operating current exceeds the limit
value
Protection for outdoor fan motor
module
Compressor exhaust
Temperature overheating
protection
Compressor exhaust
Temperature exceed the protection
value
Anti-cooling protection at cooling
mode
At cooling mode, condenser temperature
is lower than setting value
Overheating protection at
heating mode
Outdoor temperature
overheating or over cooling
protection
1.At cooling mode, outdoor temperature
is too low.
2.At heating mode, outdoor
temperature is too high.
Condenser temperature
overheating protection
The compressor drive is abnormal or
doesn’t start
Inverter module overheating or current
overload protection
Failure of Inverter compressor
Inverter compressor is fault or out of
step
Communication failure of liner
controller
Communication failure between liner
controller and controller board
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