Troubleshooting Guide
COMPLAINT | CAUSE | REMEDY | |
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Compressor cycles | Voltage | Check the voltage. See the limits on the preced- | |
on overload. |
| ing page. If not within limits, call an electrician. | |
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| Overload | Check overload, if externally mounted. | |
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| Replace if open. (If the compressor temperature | |
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| is high, remove the overload, cool, and retest.) | |
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| Fan motor | If not running, determine the cause. Replace if | |
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| required. | |
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| Condenser air flow | Remove the cabinet. inspect the interior surface | |
| restriction | of the condenser; if restricted, clean carefully | |
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| with a vacuum cleaner (do not damage fins) or | |
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| brush. Clean the interior base before | |
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| reassembling. | |
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| Condenser fins | If condenser fins are closed over a large area | |
| (damaged) | on the coil surface, head pressures will increase, | |
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| causing the compressor to cycle. Straighten the | |
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| fins or replace the coil. | |
| Capacitor | Test capacitor. | |
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| Wiring | Check the terminals. If loose, repair or replace. | |
| Refrigerating system | Check the system for a restriction. | |
Insufficient cooling or heat- | Air filter | If restricted, clean of replace. | |
ing | Exhaust damper door | Close if open. | |
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| Unit undersized | Determine if the unit is properly sized for the area to |
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| be cooled. | |
Excessive noise. | Blower or fan | Check the set screw or clamp. If loose or missing, | |
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| correct. If the blower or fan is hitting air guide, | |
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| rearrange the air handling parts. | |
| Copper tubing | Remove the cabinet and carefully rearrange tubing | |
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| not to contact cabinet, compressor, shroud, and bar- | |
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| rier. | |
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