Midea AAC-18ISCH, Service Manual

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