Problem: Complete UI failure – no power to display board from main control or severed communication harness
How to Fix Refrigerator Error
- Unplug refrigerator.
- Remove display panel bezel and disconnect UI board harness.
- Restore power briefly and measure voltage at harness connector: should read 12-14VDC on power pins.
- No voltage = main control board W10868991 power supply failure OR severed harness WPW
- Trace harness from main board to UI – check for rodent damage or pinched wires at door hinge.
- Voltage present but no display = UI board WPW10366217 failure – replace board.
- After repair, verify all display segments illuminate during power-up self-test.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.










