Wine cooler displays E8 and the unit may shut down or run erratically after a power event.

Safety first: Unplug the wine cooler before inspecting electrical connections. Do not attempt component-level board repair unless qualified.

Steps to try for E8:

• Power cycle: Disconnect power for at least 15 minutes to allow capacitors to discharge. Reconnect and see if E8 clears.
• Check mains supply: Ensure the outlet provides stable voltage and is properly grounded. Avoid using lightweight extension leads or multi-way adapters.
• Inspect power connections: Remove the rear service panel and check that the main power harness is firmly connected to the main PCB and that there are no signs of burning or overheating.
• Surge protection: If E8 occurred after a storm or power cut, consider using a surge-protected outlet in future to protect the electronics.
• Replace main PCB: If E8 persists after reset and wiring checks, the EEPROM or microcontroller on the main control board is likely corrupted or damaged. Replace the Hoover-compatible main control PCB. This typically requires transferring all connectors one by one to the new board.
• Professional service: Because this involves the primary control electronics, many users will prefer to have a Hoover-authorized technician perform the replacement.