Samsung AM072/096/120/144FXVAFH, Service Manual

Page: 195 / 295

Troubleshooting
4-98 Samsung Electronics
4-4-47 COMP Overcurrent error
Outdoor unit display
(INVERTER1 PCB)
(INVERTER2 PCB)
Judgment Method
∙ Will occur if the overcurrent flowing in the IPM.
∙ Detected by H/W or S/W
Cause of problem
∙ COMP. defective.
∙ Inverter PCB Defective.
1. How to check
Remove the obstacles and check
the status of the installation.
No
Yes
Is the outdoor unit installed properly?
Power Off
Replace Compressor
No
Yes
Is the resistance value
between phase of Compressor wire
(U-V, V-W, W-U) less than 2Ω?
Replace Compressor
No
Yes
Is the resistance between
the body of Compressor and
chassis MΩ?
No
Yes
Does the Compressor
connection wire properly connect
to the compressor?
Check the connection wire
(Check the status of the
connection UVW)
Continue.