E8
Whirlpool
Low-Voltage DC Supply Fault
E8 error code and the unit powers on but the display is dim or unstable.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Failed low-voltage regulator on control board, Shorted component on UI board drawing excess current, Loose low-voltage harness connection
How to Fix / Troubleshooting
Safety first: Disconnect power before opening the unit.
Visual inspection:
- Access the main control board and UI board.
- Look for burnt resistors, cracked ICs, or bulging electrolytic capacitors in the low-voltage section (often near where the transformer or switching supply is located).
- Check the harness between the main board and UI board for pinched or damaged wires.
Component-level vs. board replacement:
- Most consumers should not attempt component-level repair on the PCB. If obvious damage is present, replace the entire main control board with a Whirlpool-specified part.
- If the main board looks normal but the UI board shows signs of heat or corrosion, replace the UI/display board.
Reassembly: Ensure all stand-offs and insulators are reinstalled to prevent shorts before powering the unit again.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements