Inverter Overcurrent Error - Samsung AM009FN1DCH/AA Service Manual

Troubleshooting

4-4-75 Inverter Overcurrent error

Outdoor unit display
· Will occur if the overcurrent flowing in the IPM.
Judgment Method
· Detected by H/W or S/W
· Installation defective
Cause of problem · Comp. defective
· PCB defective
1. Cause of problem
Is the outdoor unit installed properly?
sensor location and the measurement
between phase of Compressor wire
(U-V, V-W, W-U) less than 2Ω?
Is the resistance between
the body of Compressor and
connection wire properly connect
4-100
(INVERTER1 PCB)
(INVERTER2 PCB)
Power Off
Yes
Is temperature
value normally?
Yes
Is the resistance value
Yes
chassis MΩ?
Yes
Does the Compressor
to the compressor?
Yes
Continue
· Connection wire error
· Motor defective
No
Remove the obstacles and check
the status of the installation.
No
Power Off, and then replacement
or correction of the sensor location
No
Replace Compressor
No
Replace Compressor
No
Check the connection wire
(Check the status of the connection UVW)
Samsung Electronics