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Is connection to connector good?
Is the wires to compressor right?
Check the voltage between P and N on inverter
module. Is it about 380V?
Check the inverter module, If some component
cracked or damaged?
Is it breakdown between P-N,P-U,P-V;N-W,N-U,N-V
At inverter module
13.1.8
Display
P1
Is the power supply right?
Check the outdoor power board
Replace outdoor main PCB.
13.1.9
Display
P2
Off: 115゜C;
On: 100゜C
31
Yes
Yes
Yes
No
No
No
Check compressor
Yes
Compressor top protection against temperature
Service manual
Test the outdoor power supply board again.
Yes
Inverter module is defective
LED STATUS
Over voltage or too low voltage protection
LED STATUS
No
Repair connector
No
Yes
Inverter module damaged, replace it.
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