| g. | Low voltage | g. | Check power supply |
| h. | Operating 60 Hz unit at 50Hz | h. | Use proper 60 Hz |
| i. | Sealed system problem | i. | Call service for checking loss of |
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| refrigerant or restrictions |
| j. | Undercharge or overcharge | j. | Call service to add or remove |
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| refrigerant |
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7. House circuit tripping
| a. | Incorrect fuse or breaker | a. | Check for proper fuse or breaker |
| b. | Incorrect wirings | b. | Check for wirings and connections |
| c. | Failed components | c. | Call service |
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8. Noisy operation
| a. | Mounting area not firm | a. Add support to improve installation | |
| b. | Loose parts | b. Check fan blades, bearings, cabinet | |
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| washers, tubing contact and loose |
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| screws. |
| c. | Compressor overloaded due to high | c. | Check for airflow blockage |
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| ambient temperatures or airflow |
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| restriction |
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| d. | Malfunctioning components | d. | Call service for checking Internal |
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| loose, inadequate lubrication and |
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| incorrect wirings |
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