Troubleshooting Guide
COMPLAINT | CAUSE | REMEDY |
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Compressor cycles on | Voltage | Check the voltage. See the limits on the |
overload. |
| preceding page. If voltage is not within these limits, |
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| 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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Compressor cycles on | Fan motor | If not running, determine the cause. Replace if |
overload. |
| 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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| |
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| Condenser fins | If the condenser fins are closed over a large |
| (damaged) | area on the coil surface, head pressures will |
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| increase, causing the compressor to cycle. |
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| Straighten the fins or replace the coil. |
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| Capacitor | Test the capacitor. |
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| Wiring | Check the terminals. If loose, repair or replace. |
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| Refrigeration system | Check the system for a restriction. |
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Insufficient cooling | Air filter | If restricted, clean or replace. |
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| Unit undersized | Determine if the unit is properly sized for the |
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| area to be cooled. |
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Excessive noise | Blower or fan | Check the set screw, or clamp. If loose or miss- |
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| ing, correct. If the blower or fan is hitting scroll |
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| or barrier, rearrange the air handling parts. |
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| Copper tubing | Remove the cabinet and carefully rearrange the |
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| tubing not to contact the cabinet, |
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| compressor, shroud, and barrier. |
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27Room Air Conditioner