Samsung AM032MNQDCH/AA Service Manual page 316

Troubleshooting
4-4-74 Compressor starting error
Outdoor unit display
∙ Startup, and then if the speed increase is not normally.
Judgment Method
∙ Detected by H/W or S/W.
∙ Compressor connection error
Cause of problem ∙ Defective Compressor
∙ Defective PCB
1. Cause of problem
Power Off and then Restart
Is Hot Gas Bypass Valve startup
the initial power is applied?
Hot Gas Bypass Valve initial
startup does it work?
value between different phases of
compressor (U V,V W,W U)
between the body of Compressor and
Does the Compressor
connection wire properly connect to
the compressor?
4-116
(INVERTER1 PCB)
(INVERTER2 PCB)
Yes
Yes
Is the resistance
less than 2Ω?
Yes
Is the resistance
chassis MΩ?
Yes
Yes
Continue
No
Hub Replace PCB.
No
Replace Hot Gas Bypass Valve.
No
Replace Compressor.
No
Replace Compressor.
No
Check the connection wire.
Samsung Electronics