How to Fix / Troubleshooting

Safety: Unplug the unit before defrosting or accessing the evaporator.

Steps:

Manual defrost: Remove all bottles, unplug the cooler, and leave the door open until all ice melts. Use towels to absorb water.
Inspect door gasket: Check for tears, warping, or gaps. Replace the gasket if it does not seal evenly around the door.
Check defrost components: After defrosting, remove the interior rear panel and inspect the defrost heater and sensor. Test the heater for continuity and the sensor for proper resistance.
Replace faulty parts: Install a Whynter-compatible defrost heater or thermistor if tests indicate failure.

Preventive: Minimize door openings and avoid placing wet bottles directly inside to reduce moisture load.

Excessive frost or ice buildup on the back wall or around the evaporator.

Possible Causes