Troubleshooting
4-118 Samsung Electronics
4-4-75 Inverter Overcurrent error
Outdoor unit display
(INVERTER1 PCB)
(INVERTER2 PCB)
Judgment Method
Will occur if the overcurr ent flowing in the IPM.
Detected by H/W or S/W
Cause of problem
Installation defective
Comp. defective
PCB defective
Connection wire error
Motor defective
Power Off
Continue
Yes
Is the outdoor unit installed properly?
Remove the obstacles and check
the status of the installation.
No
Yes
Is temperature
sensor location and the measurement
value normally?
Power Off, and then replacement
or correction of the sensor location
No
Yes
Is the resistance value
between phase of Compressor wire
(U-V, V-W, W-U) less than 2?
Replace Compressor
No
Yes
Is the resistance between
the body of Compressor and
chassis M?
Replace Compressor
No
Yes
Does the Compressor
connection wire properly connect
to the compressor?
Check the connection wire
(Check the status of the connection UVW)
No
1.
Cause of problem
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