Service manual
46
No
13.1.10
Display LED STATUS
P3 Outdoor low temp. protection
This is optional, factory standard unit has not this function.
Unit stops when outdoor temp. is low than -15°C and lasting time more than 60 minutes, and unit
runs again when outdoor temp. more than -12°C.
Does compressor operate?
Is refrigerant circulation volume normal?
Gas charging
Is abnormality the same after gas charging
Check refrigerant system (such as clogging of
Is protector normal?
Check the outdoor main PCB
Replace protector
No
Yes
Yes
No
No
Is the outdoor temp. low than -15°C?
Is the outdoor temp sensor right according to the table in clause 12
Replace the outdoor main board
No
Yes
Is the connection good?
Yes
Connect and test again.
No
Replace the outdoor main PCB.
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