Display shows E8 and the wine cooler may not cool or may cycle erratically.
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.
Possible Causes
How to Fix / Troubleshooting
Safety warning: The compressor circuit carries mains voltage. Unplug the unit before opening the rear panel or touching any wiring.
Steps to address E8:
- Confirm compressor behavior: With the rear panel removed, briefly plug in the unit and listen/feel for the compressor attempting to start. Unplug again before handling components.
- Inspect wiring: Check the harness from the main control PCB to the compressor start device for burns, loose connections, or melted insulation.
- Check the control board: Examine the main control PCB for darkened areas, cracked solder joints, or a visibly damaged relay (often a small rectangular component).
- Test compressor separately (advanced): A technician can test the compressor windings and start device. If the compressor is good but the relay does not energize, the PCB is suspect.
- Replace main control PCB: If visual inspection and symptoms point to a failed relay or board, install a Haier-compatible main control PCB. Transfer any jumpers or configuration plugs as per the service documentation.
- Reassemble and test: Refit the rear panel, restore power, and verify that the compressor starts and E8 clears.
Important: If you are not comfortable working around high-voltage circuits, contact a professional appliance technician for this repair.
Repair Difficulty
Required Part
We may earn a commission from links on this page.