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3-24. Phase reversal or phase failure(3Ø outdoor unit wiring, R-S-T-N),
connection error on 3 phase input. (E-425) (cont.)
Did the Main
Terminal Block and Power R, S, T, N is
connected properly?
Did the Reactor
Connection Terminal is connected
Did the EMI PCB Fuse is short?
Is EMI PCB CN21
connector and Inverter PCB accurately
connected?
Replace Inverter PCB.
Samsung Electronics
Power Off
Yes
properly?
Yes
No
Yes
Power BOX Terminal : Check the phase -to-phase
No
connection 380V of the R, S, T and then restart.
(N-phase must be properly connected.)
No
Connection and then restart it.
Low voltage error during this initial charge :
No
Replace Fuse, if the rectier diode of the inverter
Yes
Connection and then restart it.
PCB is normal.
61
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