Wine cooler runs continuously and overcools or cannot reach the set temperature, cycling rarely or not at all.

Safety: Disconnect power before accessing sensors or the control board.

• Verify actual temperature: Place an accurate thermometer in the middle of the cabinet and compare to the display. Note any large discrepancy.
• Check door gasket: Inspect for gaps, tears, or hardened sections. Replace the Grundig door gasket if it does not seal evenly.
• Ensure proper loading: Avoid overpacking bottles against the rear wall or air vents. Maintain space for air circulation.
• Test cabinet sensor: Measure resistance of the cabinet NTC and compare to Grundig specs. Replace if out of range.
• Replace control board if needed: If sensor and gasket are good but temperature control is erratic, the main PCB may be misregulating and should be replaced.