Daikin Original Spare Parts – Wire Harness Set + Inverter PCB
Selling a full collection of genuine Daikin wire harnesses and one inverter control board.
All items are unused, still in original bags unless shown otherwise.
These parts suit a range of Daikin heat pumps / air conditioning outdoor units that use the ETC731372-S6671 inverter board family.
Perfect for technicians, repair shops, or anyone refurbishing Daikin outdoor units.
See table below for full list of part numbers and functions.
Used and appears to be in great condition - unable to test however.
Original packaging where applicable
No damage, no corrosion, no bent pins
Fully clean and ready for installation
These are OEM Daikin parts.
Compatibility depends on model series — please check part numbers with your Daikin service manual.
A full set of wiring harnesses for compressor, fan motor, sensors, and inter-board communication, plus the inverter PCB.
Part Number | Name | Description
-----------|-------|-------------
5014857 | Wire Harness X401A → L1-2-3B | Power/signal distribution harness from X401A to L1/L2/L3B terminals.
5014874 | Wire Harness X41A → X3A | Communication harness between control board points X41A and X3A.
5014865 | Wire Harness X10A → X4A | Sensor/feedback harness linking sub-board X10A to main board X4A.
5014870 | Wire Harness L2B | Single-wire harness for L2B (white). Compressor phase/sensor routing.
5014871 | Wire Harness L3B | Single-wire harness for L3B (black). Compressor phase/sensor routing.
5014860 | Wire Harness X20A → X4A | Control/sensor harness from X20A to X4A.
5014866 | Wire Harness Compressor | Compressor harness carrying inverter output and sensor lines.
5014878 | Wire Harness INV → FAN | Fan motor wiring harness for inverter → outdoor fan motor.
5014877 | Wire Harness X5A → X5A | Jumper harness linking X5A to X5A for optional sensor/diagnostic loops.
5014869 | Wire Harness L1B | Single-wire harness for L1B (red). Compressor phase/sensor line.
ETC731372-S6671 | Inverter PCB | Daikin inverter power/control board assembly (PFC + IGBT).
Q16578-396-118 | PCB Revision | Daikin internal revision code for the inverter PCB.