| Questions | Cause | Remedy |
| Have you checked the wiring connections? | Loose wiring | Check all wire junctions. Tighten all terminal screws |
| Have you checked the wiring? | Improperly wired | Check wiring against diagram. Make changes as necessary |
| Have you checked the voltage and amperage to motor? | Low voltage or amperage | Increase voltage and/or amperage to nameplate specifications |
| Is unit in defrost? | Unit in defrost. Only air defrost models continue to run. Fans do not run with electric defrost models while in defrost | None. Wait for completion of defrost cycle |
| How cold does coil become? | Coil does not become cold enough to reset fan delay | Adjust box thermostat. Adjust or replace fan delay |
| Is fan delay defective? | Defective fan delay | Replace fan delay |
| Is motor defective? | Defective motor | Replace motor |
| Is defrost timer defective? | Defrost timer defective | Replace defrost timer |
