ICP DLF4AH09J1A - Start−Up Failure

SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
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(4) Start−up failure (following AP1for outdoor unit control board)
Detection
 Whether the compressor wiring is connected correctly?
 Is the compressor broken?
 Has the compressor stopped long enough before re−
start
Fault diagnosis process:
Y
N
Y
N
N
Y
Y
N
Power on the unit
Is stop time of the compressor
longer than 3 minutes?
Restart it up after
3 minutes
Does startup fail?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Connect the wires as
per the connection
diagram
Replace the control panel AP1
If the fault is eliminated?
Replace the
compressor
End