| Problem | Possible Cause | Possible Solutions |
| Door gasket does not seal properly. | Seal has come loose | Reseal gasket as per instructions |
| Unit is not level | Level the unit as per instructions | |
| Door does not hang straight | Adjust door hinges as per instructions | |
| Door warped in transit | Leave door open in new surroundings for 48 hours. (More Information) |
|
| Unit will not start | PDT/PDT Junior Thermostat delay | Leave unit on… wait twenty minutes… should start |
| Tripped breaker | Locate electrical panel, reset breaker | |
| Temperature setting | Turn down thermostat to lower temperature | |
| Wine probe connections | Assure probe line is not stretched out too much | |
| Unit runs constantly | Thermostat set too low | The unit is only designed to cool to 50°F and 30°F cooler than temperature of the room it is in |
| Cabinet recently loaded with wine | It may take several weeks to reach optimal storage temperature | |
| Ambient temperature of room too high | Unit may simply need to run | |
| Inadequate ventilation | Install some type of ventilation equipment | |
| Door gasket not sealing properly | See door gaskets |
|
| Unit is not cooling | Door gaskets not sealing | See door gaskets |
| Thermostat not adjusted correctly | Adjust thermostat to lower temperature | |
| Thermostat not operating | Follow Bypass Plug procedure | |
| Low on Freon | Unit may need to be serviced by a technician | |
| Temperature variation between top/bottom of cabinet | Unit not operating | See Temperature Equalizer |
| Cooling unit ices up | Unit running constantly | See section on running constantly (above) |
| Other cause | Unplug for 24 hours, then restart. If problem persists, unit may need to be serviced by a technician | |
| Unit makes clicking noise during startup | Not enough power to start unit | Assure dedicated 15 amp circuit. Check voltage to outlet |
| Unit makes a sizzling noise | As the WhisperKOOL unit is running, it will develop condensation and the water will drain into a pan. As the pan heats up, you will hear this crackling noise as water drips onto the pan. | The noise will go away after a couple of weeks. |