Miller Central Air Conditioner Troubleshooting

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Central air conditioning is an air conditioner unit that is connected to the ducts in a home or business to move cold air throughout the building. Alternatively, the cooler air may move through the pipes to heat exchangers in several rooms. Miller brand central air conditioners also pull air in from the rooms in the building and filter the air before cooling it and returning to the building and may be less noisy than free-standing units. If problems occur with a Miller central air conditioner, basic troubleshooting may be able to fix the problem before a service technician needs to be called.

Things You'll Need

  • Power supply
  • Check the power supply as well as possible fuses or circuit breakers if the air conditioning unit is not working.

  • Locate the high-pressure limit switch on the compressor access panel and push the switch if the compressor switches off when it should be functioning.

  • Turn off the air conditioner and clean the fan blades with a clean, soft cloth if the air conditioner is making excessive noise.

  • Turn off the air conditioner unit if the outdoor temperature is below 60 degrees to prevent frost from forming on the evaporator coils.

  • Unplug the air conditioner and clean it if the air conditioner is running but is not creating cooler air. If cleaning the unit does not resolve the problem, contact an authorized service technician.

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