ROOM AIR CONDITIONER VOLTAGE LIMITS
| NAME PLATE RATING |
| MINIMUM |
| MAXIMUM |
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| 115V ±10% |
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| 103.5V |
| 126.5V |
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| COMPLAINT | CAUSE |
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| REMEDY | ||||
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| Fan motor will not run | No power |
| Check voltage at outlet. Correct if none. | |||||
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| Power supply cord |
| Check voltage to rotary switch. If none, check power | |||||
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| supply cord. Replace cord if circuit is open. | ||||
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| Rotary switch |
| Check switch continuity. Refer to wiring diagram for | |||||
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| terminal identification. Replace switch if defective. | ||||
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| Wire disconnected or |
| Connect wire. Refer to wiring diagram for terminal | |||||
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| connection loose |
| identification. Repair or replace loose terminal. | |||||
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| Capacitor (Discharge |
| Test capacitor. |
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| capacitor before testing.) | Replace if not within ±10% of manufacturer's rating. | ||||||
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| Replace if shorted, open, or damaged. | ||||
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| Will not rotate |
| Fan blade hitting shroud or blower wheel hitting | |||||
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| scroll. Realign assembly. |
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| Units using slinger ring for condenser fan must have | ||||
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| 1/4 to 5/16 inch clearance to the base. If it hits the | ||||
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| base, shim up the bottom of the fan motor with | ||||
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| mounting screw(s). |
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| Check fan motor bearings; if motor shaft will not | ||||
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| rotate, replace the motor. |
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| Fan motor runs | Revolves on overload. |
| Check voltage. If not within limits, call an electrician. | |||||
| intermittently |
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| Test capacitor. |
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| Check bearings. Does the fan blade rotate freely? | ||||
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| If not, replace fan motor. |
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| Pay attention to any change from high speed to | ||||
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| low speed. If the speed does not change, replace the | ||||
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| motor. |
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| Fan motor noise | Fan |
| If cracked, out of balance, or partially missing, | |||||
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| replace it. |
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| Blower |
| If cracked, out of balance, or partially missing, | |||||
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| replace it. |
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| Loose clamper |
| Tighten it. |
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| Worn bearings |
| If knocking sounds continue when running or loose, | |||||
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| replace the motor. If the motor hums or noise | ||||
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| appears to be internal while running, replace motor. | ||||
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| Compressor will not run, | Voltage |
| Check voltage. |
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| but fan motor runs |
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| If not within limits, call an electrician. | ||||
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| Wiring |
| Check the wire connections, if loose, repair or | |||||
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| replace the terminal. If wires are off, refer to wiring | ||||
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| diagram for identification, and replace. Check wire | ||||
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| locations. If not per wiring diagram, correct. | ||||
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| Rotary |
| Check for continuity, refer to the wiring diagram for | |||||
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| terminal identification. Replace the switch if circuit is | ||||
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| open. |
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— 19—
