EBR88279004 Genuine Inverter PCB Onboarding for LG Air Conditioners, LG Outdoor Unit Inverter Drive Board Assembly

This is the genuine LG inverter PCB with part number EBR88279004, described as an onboarding inverter board. Boards of this type are fitted to the outdoor unit of LG inverter air conditioners, where they power and control the compressor motor. We don't have the outdoor unit models it suits on file. Compare EBR88279004 with the label on the board you are replacing to make sure it's the same part.

Is the inverter board behind your aircon fault?

Signs of a faulty inverter board include an air conditioner that blows room temperature air, an outdoor unit that won't start or keeps restarting, a breaker that trips, and fault codes relating to the compressor or inverter. These symptoms can also come from a low refrigerant charge, a failing compressor, a blocked coil or poor wiring, so a proper diagnosis matters. A technician will usually check the board's power supply, its output to the compressor and the compressor windings before replacing anything.

Part details

• Genuine LG part EBR88279004
• Inverter PCB, onboarding type
• For LG inverter air conditioner outdoor units
• Outdoor models not on file, match the board label

Fitting and safety

Replacement must be carried out by a licensed electrician or qualified air conditioning technician, as the outdoor unit is hard wired and the board can hold a charge after isolation. Turn off the breaker and isolator, test that the board is dead, and record all wiring. Fit with new thermal compound and test in both modes.

Questions about this part

What does onboarding mean on an LG inverter PCB?

It's part of LG's own name for this style of board. For buying purposes, the part number is what counts. Match EBR88279004 to the label on your old board, or to the LG parts list for your outdoor model.