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| intake side |
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| e. | Malfunctioning fans |
| e. | Check for both evaporator and | ||||
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| condenser fans |
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| f. | Improper | evaporator | or | f. | Check for air restrictions |
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| |
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| condenser airflow |
| g. | Clean condenser |
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| g. | Dirty Condenser |
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| h. | Iced evaporator |
| h. | Defrost and reset temperature |
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| i. | Refrigeration system restriction | i. | Call service for checking | restrictions | ||||
| j. | Sealed system problem |
| j. | Call service for checking loss of | ||||
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| refrigerant or restrictions |
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| k. | Undercharge or overcharge |
| k. | Call service to add or remove | ||||
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| refrigerant |
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5.Unit running | a. Improper room insulation & seal | a. Check for insulation, gasket and door | |||||||
too long or | b. Exhaust restricted |
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| opening |
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continually |
| b. Leave minimum 3 feet clearance for | |||||||
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| the exhaust side and leave minimum | ||||
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| 1 foot clearance for the fresh air | |||
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| intake side |
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| |
| c. Room too large |
| c. Check for excessive size or increase | ||||||
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| setting |
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| d. Ambient temperature higher | > | d. Check | for installation | location | or | |||
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| 90°F |
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| increase setting |
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| |
| e. Dirty Condenser |
| e. Clean condenser |
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7.Evaporator | a. | Evaporator air flow restriction |
| a. | Check for fans |
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| ||
icing | b. | Unit not stopping due to air leak, | b. | Check for seal, door opening, | |||||
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| high ambient temperature or low |
| ambient temperature and setting |
| ||||
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| setting |
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| c. | Low ambient temperature |
| c. | Defrost the unit |
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| ||
| d. | Bad thermostat or sensor |
| d. | Check for thermostat and sensor |
| |||
| e. | Refrigerant leak |
| e. | Check for sealed system leakage | ||||
| f. | Expansion valve blockage |
| f. | Check for low side pressure |
| |||
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| |||
8.Circuit | a. | Incorrect fuse or breaker |
| a. | Check for proper fuse or breaker |
| |||
tripping | b. | Incorrect wirings |
| b. | Check for wirings and connections | ||||
| c. | Failed components |
| c. | Call service |
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| ||
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| ||||
9.Noisy | a. | Mounting area not firm |
| a. | Add support to improve installation | ||||
operation | b. | Loose parts |
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| b. | Check fan blades, bearings, cabinet | |||
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| washers, tubing contact and loose | |||
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| screws. |
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| |
| c. | Compressor overloaded due to | c. | Check for airflow blockage |
| ||||
|
| high ambient | temperatures | or |
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| airflow 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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