3-Phase Input Wiring Error - Samsung AM056FN2DEH Series Service Manual

Troubleshooting

4-4-60 3-phase Input Wiring error

Outdoor unit display
Indoor unit display
. When turn on the power and check the status of the power from the inverter.
Criteria
∙ Check the input wiring
Cause of problem
∙ EMI Fuse short
1. Cause of problem
Terminal Block and Power R, S, T, N is
Connection Terminal is connected
Did the EMI PCB Fuse is short?
connector and Inverter PCB accurately
480
If the phase does not connect the power(no phase) : E425 or E466 (E366) is displayed (Air conditioner to maintain
However) N-phase must be properly connected.
Power Off
Did the Main
connected properly?
Yes
Did the Reactor
properly?
Yes
No
Is EMI PCB CN21
connected?
Yes
Replace Inverter PCB
the normal state.)
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 rectifier diode of the inverter
Yes
Connection and then restart it
PCB is normal.
Samsung Electronics