Troubleshooting
4-104 Samsung Electronics
Outdoor unit display
(INVERTER1 PCB)
Judgment Method
N-phase wiring error and EMI fuse short.
DC-Link Overvoltage / Low voltage occurs.
Cause of problem
Check the input wiring
EMI fuse short circuit
Power off
Yes
Yes
220V is the voltage between terminal blocks L
and N wire?
Check the voltage between L and N wire and
then restart it
Replace inverter PCB and then restart it
Replace fuse, if the rectifie
r diode of the inverter
PCB is normal.
No
No
Did EMI PCB fuse become short circuit?
1. How to check
غ
AM038/048/055KXWD✳✳
Overvoltage / Low voltage error
(cont.)
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