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Troubleshooting
Diagnostic procedure for check code
Check code Status of air conditioner Operation cause
[14] Operation stops 1. Outdoor unit power supply error.
IPDU short circuit 2. Wiring error on IPDU PC board.
protective operation 3. AC fuse disconnection.
alarm (Power Transistor) 4. Inverter compressor error.
5. Defective IPDU PC board.
Is the power supply voltage
of the outdoor unit normal?
Is the connection of the wiring
connector on the IPDU PC board
normal?
Is AC 20A fuse working?
Is inverter compressor normal?
Is smoothing capacitor normal?
(2200µ F,400V x 2)
Check IPDU PC board.
Confirm the power supply line.
Modify connector of wiring.
Replace IPDU PC board and fuse.
Replace IPDU PC board and inverter
compressor.
Confirm capacitance and appearance -
Replace if faulty.
Replace IPDU PC board.
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