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