Problem | Possible Cause | Action | |
|
| Replace fuse, reset breaker. If repeats, check | |
| Fuse blown or circuit tripped | fuse or breaker size. Check for shorts in unit | |
|
| wiring & components | |
Unit does not run | Power cord not plugged in | Plug it in | |
System switch in "OFF" position | Set switch correctly | ||
| |||
| Inoperative system switch | Test for continuity in each switch position | |
| Loose or disconnected wiring at | Check wiring & connections. Reconnect per | |
| switch or other components | wiring diagram |
Problem | Possible Cause | Action |
| Dirty filter | Clean as recommended in Owner's Manual |
|
| Check for dirty or obstructed coil. Use |
| Restricted airflow | pressure wash or biodegradable cleaning |
|
| agent to clean |
Evaporator coil | Inoperative | Test for shorted |
freezes up | Short of refrigerant | |
| Inoperative fan motor | Test fan motor & replace if inoperative |
|
| |
| Partially restricted capillary tube | across coil. Touch test coil return bends for |
|
| same temp. Test for low running current |
Problem | Possible Cause | Action | |
| Excessive heat load | Unit undersized. Test cooling performance & | |
| replace with larger unit if needed | ||
|
| ||
| Restriction in line | Check for partially iced coil & check | |
| temperature split across coil | ||
Compressor runs |
| ||
| Check for oil at silver soldered connections. | ||
continually & does |
| ||
Refrigerant leak | Check for partially iced coil. Check split across | ||
not cycle off | |||
| coil. Check for low running amperage | ||
|
| ||
| Check operation of | ||
| remain closed. | ||
|
| ||
| Refer to appropriate wiring diagram |
Problem | Possible Cause | Action |
|
| Disconnect power to unit. Remove cover |
| of | |
|
| replace |
Turn to higher temp. setting to see if unit | ||
unit off |
| cycles off |
| Incorrect wiring | Refer to appropriate wiring diagrams |
| Unit undersized for area to be | Refer to industry standard sizing chart |
| cooled | |
|
|
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