What To Check First When Your Air Conditioner Isn’t Working…

ac troubleshootingThe Greater Los Angeles summer heat isn’t something you want to deal with without air conditioning. If your air conditioner won’t run, you might be able to get it started again with a little air conditioner troubleshooting.

Start with the Basics

If your A/C won’t turn on at all, the problem could be as simple as someone having changed the thermostat setting or bumped into the power switch. First, check that your air conditioner is plugged in, receiving power, and turned on.

Make sure your thermostat is set to “cool.” Try lowering the temperature by around 5 degrees and wait a few minutes to see if the A/C kicks on. Reset the system’s overload switch and other protective features. If you get the system running, but it trips a breaker or the overload switch again, contact a technician. The system could have an electrical fault that poses a fire risk.

Inspect the Components

The next step in air conditioner troubleshooting involves taking a look at each of the components that are likely to be causing the problem.

  • Air filter – A clogged air filter can impair airflow through your A/C so much that the system overheats and shuts down as a safety precaution.
  • Condensate drain – The condensate drain sits under the evaporator coil in your indoor unit. This drain takes away moisture that drips from the coil as it removes humidity from your indoor air. If the drain starts to overflow, most air conditioners shut down to prevent flooding.
  • Coils – Ice on your indoor evaporator coil or outdoor condenser coil can interfere with your air conditioner’s performance or prevent it from running. Frozen coils suggest impaired airflow, low refrigerant levels or a problem with your fan motor. It can also happen when the weather is too cool for the A/C to run properly. Similarly, an outdoor unit that’s clogged with leaves and other debris can shut down your A/C.

If your air conditioner troubleshooting efforts don’t get the cooling back on, talk with us at Reliance Home Services in the Los Angeles area.