Troubleshooting
Samsung Electronics
4-99
4-4-74 Compressor starting error
Outdoor unit display
(INVERTER1 PCB)
(INVERTER2 PCB)
Judgment Method
· Startup, and then if the speed increase is not normally.
· Detected by H/W or S/W.
Cause of problem
· Compressor connection error
· Defective Compressor
· Defective PCB
Power Off and then Restart
Continue
Yes
Is Hot Gas Bypass Valve startup
the initial power is applied?
Hub Replace PCB.
No
Yes
Hot Gas Bypass Valve initial
startup does it work?
Replace Hot Gas Bypass Valve.
No
Yes
Is the resistance
value between different phases of
compressor (U
׳
V,V
׳
W,W
׳
U)
less than 2Ω?
Replace Compressor.
No
Yes
Is the resistance
between the body of Compressor and
chassis MΩ?
Replace Compressor.
No
Yes
Does the Compressor
connection wire properly connect to
the compressor?
Check the connection wire.
No
1. Cause of problem
