5.1 Trouble shooting for common faults
FAILURE
Heat pump
doesn't run
Fan running but
with insufficient
heating
Display normal,
but no heating
If above solutions don't work, please contact your installer with detailed
information and your model number. Don't try to repair it yourself.
Note: If the following conditions happen, please stop the machine immediately, and cut off
the power supply immediately, then contact your dealer:
a)Inaccurate switch action;
b)The fuse is frequently broken or leakage circuit breaker jumped.
5.2 Failure code
Failure code Failure description
PP1
PP2
PP3
PP4
PP5
PP7
EE1
EE2
EE3
5. Trouble Shooting
REASON
No power
Power switch is off
Fuse burned
The breaker is off
evaporator blocked
Air outlet blocked
3 minutes start delay
Set temp. too low
3 minutes start delay
Water Inlet temperature sensor failure
Failure for the sensor to connect AIN2 terminal on PC board
Failure for the sensor to connect AIN3terminal on PC board
Gas return temp sensor failure
Air temp sensor failure
Heating ambient temperature too low protection
High pressure protection
Low pressure protection
Water flow switch failure
Wait until the power recovers
Switch on the power
Check and change the fuse
Check and turn on the breaker
Remove the obstacles
Remove the obstacles
Wait patiently
Set proper heating temp.
Wait patiently
11
SOLUTION