Display shows E12 and the defrost cycle does not operate correctly; heavy ice may form on the evaporator.

Safety: Unplug the wine cooler. Allow any ice to melt before working near the evaporator to avoid damage.

• Access evaporator: Remove interior rear panel to expose the evaporator coil and defrost heater (often a metal or glass tube attached to the coil).
• Visual check: Look for broken heater elements, burnt spots, or disconnected wires.
• Test heater: With a multimeter, measure resistance across the heater terminals. An open circuit indicates a failed heater that must be replaced.
• Check thermal fuse: Some mQuvée models include a thermal fuse clipped to the evaporator. Test for continuity; replace if open.
• Inspect wiring: Repair any damaged wires with high‑temperature rated connectors.
• PCB relay: If heater and fuse are good but never receive power, the defrost relay or control circuit on the main PCB may be faulty. PCB replacement is required.
• Reassemble and test: After replacing components, reassemble panels, restore power, and monitor for normal defrost operation and clearing of E12.