Troubleshooting
4-72
Samsung Electronics
4-3-46 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
1. Cause of problem
Hub Replace PCB.
No
Replace Hot Gas Bypass Valve 1.
No
Yes
Yes
Is Hot Gas Bypass Valve 1
startup the initial power is applied?
*Hot Gas Bypass Valve1 is Open when
compressor starts to reduce
the Load .
Hot Gas Bypass
Valve initial startup does it work?
*(Check the temp. between Hot Gas Bypass
Valve 1 and Suction Pipe.
If Temp. is similar with Discharge pipe
Temp. . It works.)
Power Off and then Restart
Replace Compressor.
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 Open?
No
Yes
Does the Compressor
connection wire properly connect to
the Inverter PBA?
Repair / Replace the wire.
Continue.
