Compressor Starting Error - Samsung AM072/096/120/144FXVAFH Service Manual

4-4-46 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
1. How to check
Power Off and then Restart
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.)
Is the resistance
value between different phases of
compressor (U V,V W,W U)
less than 2Ω?
Is the resistance
between the body of Compressor and
chassis Open?
Does the Compressor
connection wire properly connect to
the Inverter PBA?
Continue.
Samsung Electronics
(INVERTER1 PCB)
(INVERTER2 PCB)
Yes
Yes
Yes
Yes
Yes
No
Hub Replace PCB.
No
Replace Hot Gas Bypass Valve 1.
No
Replace Compressor.
No
Replace Compressor.
No
Repair / Replace the wire.
Troubleshooting
4-95