Central Air Conditioning Problems and Solutions

There are some simple things you can do yourself if you have a problem with your central air conditioning system. Listed below are some troubleshooting ideas for central air conditioning problems and solutions from Jennings Heating and Cooling Co., Inc.

A word of warning—some problems are not simple fixes, and you can create a worse problem by trying to fix it yourself. It may end up costing more in the end if you damage something while trying the repair. 

Perform Routine Maintenance

Keeping your unit clean and operating properly will not only extend the length of its life, but it will also run more cost effectively. When a unit is allowed to become dirty and is poorly maintained over an extensive period, it will encounter a wide variety of malfunctions, such as a failed compressor or fan. If you don’t have time to perform routine maintenance yourself, contact Jennings and get put on a regular schedule for it.

Common central air conditioning problems include:

  • No power to the air conditioner
    When the wiring on your central air conditioner is faulty, it not only prohibits your unit from functioning properly, but it can also be a fire hazard. If your air conditioner isn’t getting, try flipping the circuit breaker back on, but if it trips again, call a professional.
  • Outdoor unit doesn’t turn on
    Make sure your thermostat is set to “cool” and the temperature is set lower than the room temperature. If your outdoor unit still does not turn on, you may be experiencing problems with a faulty breaker or wire. Check your breaker box. Other causes could also include a defective thermostat, transformer, or contactor.
  • Fan doesn’t run
    You can hear that the unit is on, but the fan isn’t blowing. This could be the result of a grounded compressor or fan motor. You may also have a weak breaker or defective contactor. If a check of the breaker box doesn’t solve the problem, call your HVAC company.
  • Compressor quits working
    If your air conditioner doesn’t turn on, be sure the thermostat is set to “cool” and the temperature is set below the room temperature. Other things to check include:
    1. Check the main electrical panel for a tripped breaker or a blown fuse.
    2. Check that the furnace power switch is on.
    3. Be sure the outdoor condenser’s power switch is turned on.
    4. Make sure the disconnect next to the compressor is on.
  • AC unit leaking water
    If your air conditioner is leaking water inside your house, the drain may be plugged, or your unit may be covered in a sheet of ice. Clean the drain. Check for ice. The evaporator coil pan may also be rusted out and need replaced.
  • The unit is running nonstop
    When a unit is low on refrigerant, it will not work as effectively as when it is properly charged. If your unit is running all the time, it may be low on refrigerant. Low refrigerant may also be caused by leaks. A technician must first find the leak and mend it before recharging the unit. This is not a do-it-yourself project.

Watch our short video with common easy fixes for more ideas. Contact us at Jennings for central air conditioning problems and solutions. Our trained technicians can diagnose these and any other issue you may be facing.