Safety: Disconnect mains power before removing the control panel or top trim.

Steps to address E7:

Power cycle: Unplug the cooler for 5–10 minutes, then reconnect. If E7 clears temporarily, the issue may be intermittent connection or moisture.
Inspect control panel: Remove the front control panel or top trim (depending on model). Look for signs of condensation, liquid spills, or corrosion on the touch PCB.
Check ribbon cable: Ensure the flat ribbon cable or harness between the display PCB and main control PCB is fully seated at both ends. Gently disconnect and reconnect to clean contacts.
Dry the panel: If moisture is present, allow the panel to dry completely. You can use a gentle flow of cool air; do not use high heat.
Visual inspection: Look for burnt components or cracked solder joints on the display PCB. If damaged, replace the display / user interface PCB.
Main PCB: If a known-good display panel still shows E7, the main control PCB may have a communication fault and require replacement.

Note: Avoid using harsh cleaners directly on the touch panel glass; spray onto a cloth instead to prevent future moisture ingress.

Wine cooler shows E7 and the display or touch controls behave erratically

Possible Causes