74
Troubleshooting
Diagram 13:
P7 Troubleshooting
Start
The power supply voltage
is not stable with volatility.
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
N
N
N
N
N
The normal nameplate voltage
rated wiithin 10% range
Error declared
The power supply voltage
is low and overload.
Adjust the power supply voltage, ensure
that the voltage keep in normal range
Error declared
Error declared
Error declared
Make sure indoor and
outdoor heat exchange is clean or
the inlet and outlet is clear.
The fan motor and wind speed
are operating normally or
the fan speed is low or stop
The compressor is operating
normally, check the noise, oil leakage,
body temperature etc.
Solved the compressor abnormal
operation problem.
Check the motor and re-install motor
in order to make fan motor operating normal.
Solved system internal blockage problem
Check the system
Error declared
Error declared
Error declared
Change
control board
End
Test the wire current value
more less than over-current protection from
main board by using current clamp table.
System internal blockage
( dirty block, ice block,oil block, angle
valve is not fully open.)
Clean the
indoor and outdoor heat exchange
