1. Outdoor unit does not come on
- No ac power to unit:
- Defective breaker
- Wire burned at disconnect
- Transfer to electrician
- Defective contactor
- Defective thermostat
- Defective transformer
- Wire burned off at contactor
2. Circuit breaker tips when unit turned on
- Weak breaker
- Grounded compressor
- Condenser fan motor shorted to ground
- Defective contactor
3. Unit hums but fan does not run
- Defective fan motor
- Burned wire
- Defective capacitor
4. Unit fan runs but compressor does not
- Burned wire at compressor
- Compressor out on overload protector:
- Adjust refrigerant charge
- Clean condenser coil
- Replace compressor if won’t reset
- Defective compressor
- Defective start capacitor
- Add hard start relay
5. Outdoor unit runs, no fan inside
- Defective blower motor
- Defective capacitor
- Evaporator coil dirty
- Dirty filter
- Wire burned off
- Defective fan center
6. AC leaking water inside house
- Drain stopped up
- Evaporator coil pan rusted out
- Unit frozen up
7. Ice on lines at u/s unit and at condenser
- Evaporator extremely dirty
- Dirty filter
- Low on refrigerant
- Defective blower motor
- Defective blower motor capacitor
8. Thermostat not holding temperature that is set for
- Thermostat not calibrated
- Defective thermostat
9. Several room in home warmer than others
- No dampers installed in duct system
- Air not balanced in system
- Balance system with dampers
10. Unit runs constantly
- Low on refrigerant
- Returns pulling attic air
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| Service your unit regularly - to help prevent these problems |
If you are having any of these problems please click here to set up an appointment with an Air Conditioning Expert at Schwenn Services & Contracting.
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