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11.1.10
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.
11.1.11
Display LED STATUS
P4 Inverter compressor error
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
A
re the U,V,W connected to compressor and inverter module right?
A
re the connectors CN6 and CN 11 right?
Is there +15 voltage between CN6
Yes
Yes
Replace inverter module
No
Yes
Replace outdoor main PCB
If the problem comes to again, check wingding resistance of inverter compressor, is it 0.64 ohm?
Replace inverter compressor
No
28


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