PROBLEM | POSSIBLE CAUSE | TO CORRECT | |
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| Poorly installed unit. | Refer to Installation Instructions for proper | |
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| installation. | |
| Fan blade striking chassis. | Reposition - adjust motor mount. | |
Noisy operation. | Compressor vibrating. | Check that compressor grommets have not | |
deteriorated. Check that compressor mounting | |||
| |||
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| parts are not missing, and that shipping blocks | |
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| have been removed. | |
| Improperly mounted or loose cabinet | Check assembly and parts for looseness, | |
| parts. | rubbing and rattling. | |
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PROBLEM | POSSIBLE CAUSE | TO CORRECT |
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| Evaporator drain pan overflowing. | Clean obstructed drain trough. |
| Condensation forming on base pan. | Evaporator drain pan broken or cracked. Reseal or |
Water leaks into room. |
| replace. |
| Poor installation resulting in rain | Check Installation Instructions. Reseal as required. |
| entering room. |
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| Condensation on discharge grilles. | Dirty evaporator coil - clean. |
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| Very high humidity level. |
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PROBLEM | POSSIBLE CAUSE | TO CORRECT |
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| Thermostat differential too narrow. | Replace thermostat. |
Thermostat short | Plenum gasket not sealing, allowing | Check gasket. Reposition or replace. |
discharge air to short cycle thermostat. |
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cycles. |
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Restricted coil or dirty filter. | Clean and advise customer of periodic cleaning of | |
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| filter. |
| Tubular insulation missing from top of | Replace tubular insulation on bulb. |
| thermostat bulb. | (Applicable models.) |
| Thermostat bulb touching thermostat | Adjust bulb bracket. |
| bulb support bracket. | (Applicable models.) |
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PROBLEM | POSSIBLE CAUSE | TO CORRECT | ||||
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| Anticipator (resistor) wire disconnected | Refer to appropriate wiring diagram. | |||
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| at thermostat or system switch. |
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| Anticipator (resister shorted or open). | Disconnect plug from outlet. Remove resistor from |
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| |
Prolonged | (Applicable models.) | bracket. Insert plug and depress "Cool" and "Fan - | ||||
| Auto (MoneySaver)” buttons. Place thermostat to | |||||
(automatic operation) |
| |||||
| warmest setting. Feel resistor for temperature. | |||||
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| If no heat, replace resistor. | |||
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| Partial loss of charge in thermostat | Replace thermostat. |
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| bulb causing a wide differential. |
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PROBLEM | POSSIBLE CAUSE | TO CORRECT | |
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Switches from | Thermostat sticking. | Change room thermostat. | |
cooling to heating. | Incorrect wiring. | Refer to appropriate wiring diagram. |
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