Addison RC/FC072 - User Manual

Questions and Answers

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nortonaprilAug 16, 2025
What to do if my Addison Air Conditioner compressor will not start?
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  lori72Aug 16, 2025
  If your Addison Air Conditioner's compressor won't start, check the disconnect switch, fuses, and wiring. Also, inspect the voltage to the contactor coil, transformer slave relay, and thermostat. If the compressor is hot, allow 2 hours to cool. Check the compressor for electrical failure and whether it may be seized. Finally, check the calibration of the high or low pressure switch, and inspect the oil failure control.
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Cody RobinsonAug 19, 2025
Why is my Addison Air Conditioner compressor so noisy?
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  Kimberly LeeSep 12, 2025
  If your Addison Air Conditioner compressor is making excessive noise, it could be due to several reasons. For scroll compressors, reverse wiring at the disconnect switch. Check the pressures and subcooling if the refrigerant is overcharged. Inspect the oil level, and add oil as recommended. Check the TXV setting or for a refrigerant circuit problem if there's liquid floodback. Dampen tubing rattle by taping or clamping, and replace the compressor if defective.
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Stephanie WallaceAug 22, 2025
What to do if my Addison Air Conditioner has high discharge pressure?
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  Jessica MarksAug 22, 2025
  If your Addison Air Conditioner has high discharge pressure, check the TXV setting and calibrate superheat. Ensure proper clearances around the condensing unit and check for air recirculation if the air inlet is dirty or obstructed. Inspect the condensing unit fan motor and run capacitor. Also, check the calibration of the low ambient head pressure control.
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christiancontrerasAug 25, 2025
Why is my Addison Air Conditioner making so much noise?
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  scottbennettAug 26, 2025
  Excessive noise from your Addison Air Conditioner could be due to high air velocity in the ductwork, so check the ductwork. If the contactor is chattering, check for adequate control voltage, shorts or breaks, the thermostat, and contactor points. Tubing rattle can also cause noise; dampen it by taping or clamping, or bend the tubing away from contact points.
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Brittany MyersAug 28, 2025
What to do if my Addison Air Conditioner blower motor does not run?
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  warnerjillAug 28, 2025
  If the blower motor in your Addison Air Conditioner isn't running, check if the damper limit switch is closed or inoperative; repair or replace the switch if needed. Reset the motor thermal overloads if tripped. Replace any blown or missing fuses. Have incoming power lines checked if there's a lack of external power. If the motor is inoperative, consider repairing or replacing it.
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Megan Parks MDAug 31, 2025
Why is the suction pressure too low in my Addison Air Conditioner?
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  Angela HallAug 31, 2025
  Low suction pressure in your Addison Air Conditioner may be due to refrigerant undercharge, so check pressures and subcooling. If the blower is running backwards, interchange any two wires connected to the motor. Check superheat and adjust the TXV if the expansion valve is defective or improperly adjusted. Inspect the filter and evaporator coil for dirt. Check airflow and entering air wet bulb conditions if there is too little airflow or low entering air temperature. Finally, check the refrigerant circuit for any restrictions.
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Warren KellySep 3, 2025
What to do if my Addison Air Conditioner blower motor is not running?
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  Sarah KnappSep 3, 2025
  If the blower motor isn't running on your Addison Air Conditioner, check the wiring diagram for improper wiring. Inspect the motor controller if the motor is defective. Check the “R” and “G” circuits if the thermostat or control circuit is defective. If the motor is off on the overload protector, allow the motor to cool and check the amperage.
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Samuel ThompsonSep 6, 2025
What to do if my Addison Air Conditioner has high suction pressure?
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  Arthur NovakSep 6, 2025
  If your Addison Air Conditioner is showing high suction pressure, check for high entering wet bulb temperature and excessive airflow, which indicates an excessive load on the evaporator coil. For broken compressor valves (though scroll compressors do not have valves), note that scroll compressors should not be pumped down below 5 PSI. Recalibrate the unloader pressure switch if the compressor is unloaded. Check the temperature across the check valve for a leaking check valve. Finally, check the TXV and ensure the bulb is insulated if the expansion valve is not secured to the suction line or is defective.
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robertmunozSep 9, 2025
What to do if Addison Air Conditioner blower motor runs, but fans do not supply enough make-up air?
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  Robert ParkerSep 9, 2025
  If the blower motor runs but the fans don't supply enough make-up air in your Addison Air Conditioner, replace or clean dirty intake filters. Check dampers for proper operation and clear all intake passages of obstructions. Reposition and tighten the fan wheel if it's loose on the shaft. Ensure all access doors and panels are closed. Clean filters and/or readjust dampers if there's excessive discharge resistance from dirty filters or external dampers.
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leslie33Sep 12, 2025
Why is my Addison Air Conditioner fan so noisy?
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  Kenneth HallSep 12, 2025
  Excessive fan noise in your Addison Air Conditioner could be due to a faulty fan bearing, so replace it. If the fan wheel is loose on the shaft, reposition and re-tighten it. For a fan wheel rubbing, loosen setscrews, reposition the cone, and tighten. Clean a dirty fan wheel. Tighten or reinforce a loose duct. Finally, remove any foreign article in the fan or duct.