52 Free Joint Multi Air Conditioner
Electronic Parts Troubleshooting Guide
Electronic Parts Troubleshooting Guide
1. The Outdoor Unit does not operate at all
Does the Operating LED of indoor unit blink
when Operation’s ON?
Refer to the self-diagnosis function.
NO
NO
Is the Connection between CN-Power of indoor
unit and terminal block?
Check the connecting state of connector
NO
YES
Is the voltage of CN-POWER in outdoor
PCB Ass’y about AC220V / 240V?
Check the main power
NO
YES
Check the Fuse of outdoor PCB Ass’y.
Chek the connecting state of wires
Replace the PCB Ass’y.
NO
Is the connection of cable between indoor and
outdoor unit ringht?
Indoor
Outdoor
1(L)(Brown) 1(L)(Brown)
2(N)(Blue) 2(N)(Blue)
(Green/YL) (Green/YL)
3(Red) 3(Red)
NO
YES
* TPS units start at three minutes after main power turning on.
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