Air Conditioning Troubleshooting

DIY Tips for Common A/C Problems

Not all air conditioning system problems require professional service. Below we have compiled some common a/c issues and some simple solutions to try yourself. However, if you find you cannot fix the problem on your own or are unsure about what to do, always feel free to give us a call and Alpha Dog will lend a hand.

The following are some of the most common a/c problems and our suggestions for DIY solutions.

Problem: A/C is not Cooling My Home

Possible Fixes:

  • First, check the thermostat display. If blank, refer to the next section below.
  • Check your thermostat settings to ensure that the temperature is set to below the current room temperature and the system switch is set to COOL or AUTO. The fan switch should also be set to AUTO.
  • Ensure that your unit is not frozen by checking the bottom of the air handler/furnace. If it is very cold and sweating, turn off the unit for at least 4 hours to allow it to defrost and replace your filter.
  • Check your breakers, there will be two: one for the indoor air and one for the outside unit. If needed, reset the breaker by moving it to the off position and then back on.
  • Has it been too long since replacing your filters? Replacing filters can allow for cleaner and better airflow throughout your home.

Problem: Blank Thermostat Display

Possible Fixes:

  • How long has it been since the batteries were replaced? A simple battery change-out may be all that is needed.
  • If applicable, locate the condensate overflow safety reservoir located near the air handler/furnace. If it has filled with water, it is possible that it has switched on the safety mechanism. To fix, suction out the water and re-install the safety switch. Proper installation of a safety switch will help to avoid costly water damage if this problem occurs again.
  • Check the breakers for your air conditioning unit, there will be two: one for the indoor air and one for the outside unit. Switch to off and back on if needed.

Problem: One Area of my Home is Warmer than the Others

Possible Fixes:

  • Check to see if your thermostat has zone comfort cooling to check the settings in different zones of your home. Make sure the setting in the appropriate zone is set to the desired temperature. You can also double-check that the system switch is set to COOL or AUTO. The fan switch should also be set to AUTO.
  • If the warmer zone is sun-facing or lacking window treatments, this could be causing areas of your home to remain warmer than the others. By properly covering windows you can expect more consistent cooling throughout your home.
  • Does the warmer room contain running electronics? Home offices and other such rooms running computers or other electronic devices will tend to be warmer because of these devices.
  • Check the air grilles in the warmer rooms to ensure that they are clean, uncovered, and open.
  • Check the air filters and replace if needed.

Sometimes your a/c problem has an easy fix and we hope this information has helped you to resolve your issue, but if you are still experiencing problems, Alpha Dog is always here to help to get your unit running properly once again.