3-Phase Input Wiring Error - Samsung AG042KSVANH Service Manual

System air conditioner dvm chiller
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4-3-24. 3-phase Input Wiring error

Inverter / Hydro control part display
Judgment Method
Cause of problem
1. Inspection Method
Terminal Block and Power R, S, T, N is
connected properly?
Connection Terminal is connected
Did the EMI PCB Fuse is short?
connector and Inverter PCB accurately
Replace Inverter PCB
When turn on the power and check the status of the power from the inverter.
If the phase does not connect the power(no phase) : E425 or E466 (E366) is displayed (Air conditioner to maintain the
normal state.)
However) N-phase must be properly connected.
Check the input wiring
EMI Fuse short-circuit
Power Off
Did the Main
Yes
Did the Reactor
properly?
Yes
No
Is EMI PCB CN21
connected?
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
Reactor terminal connection and then restart it
Low voltage error during this initial charge :
No
Replace Fuse, if the rectifier diode
of the inverter PCB is normal.
(Refer to measuring method using a tester)
Yes
Connection and then restart it
64

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