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| Troubleshooting Guide |
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COMPLAINT | CAUSE | REMEDY |
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Compressor cycles | Capacitor | Test capacitor. |
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on overload. |
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Wiring | Check the terminals. If loose, repair or replace. |
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| Refrigerating system | Check the system for a restriction. |
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Insufficient cooling or heat- | Air filter | If restricted, clean of replace. |
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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. |
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Excessive noise. | Turbo 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. |
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| 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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Auto | Rotary switch. | Set the knob to HIGH COOL or LOW COOL while |
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| rocker switch is ON. |
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| Wiring | Check terminals. If loose, repair or replace. |
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| Synchronous motor. | Check the synchronous motor for open circuit. |
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Service Manual 34
