Samsung AM072BXV Series - Compressor Starting Error

Troubleshooting
Samsung Electronics 129
4-3-45 / Compressor starting error
Outdoor unit display
(INVERTER1 PBA)
(INVERTER2 PBA)
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
Replace MAIN PBA
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.
Replace Inverter PBA
Replace Inverter PBA
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Is the resistance
value between different phases of
compressor (U ↔ V,V ↔ W,W ↔ U)

Is there On-device
Inverter Check
Has nG been marked?
Is there On-device
Inverter Check
Does all 6 LEDs light up?
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.
4-3 Appropriate Measures for Different Symptom (cont.)
Press K1 button
12 ~ 16 times
Press K2 button
10 ~ 13 times