Why Your Thermostat is Blinking

If you’re like most people, any time lights start blinking around you, you’re going to be a bit alarmed. It’s one thing when those lights are something you’re familiar with, such as your alarm clock or car hazard lights, but it’s another when it’s something unfamiliar, like anything that’s a part of your HVAC system. So if you’re thermostat is blinking, here’s why.

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Why Your Thermostat is Blinking

There’s a problem with your outdoor unit. When this happens, your outdoor unit will shut off and send a signal to your thermostat, causing it to blinks. Thing is, that signal doesn’t mean your indoor unit is made aware of the problem. Your indoor unit will probably continue running, and the thermostat will keep blinking until the problem is fixed.

What to Do:

Most often, you’ll need to shut off your indoor unit for a minute, then turn it back on after 30 seconds, causing the light to turn off as well. Wait about 10 minutes, then check to see if your outdoor unit has turned back on.

  • If it has, the problem was probably with the circuit breaker.
  • If it hasn’t, there is probably a bigger problem, and you should call an HVAC professional to inspect your unit.

Pro Tip: Try to count how many flashes happen in one sequence — these are often codes that indicate what the problem is.

At Air Treatment Company, we have the expertise needed to diagnose any and all problems you may have with your HVAC system. For more information or to schedule a service near Vienna, VA, call us at 703-938-0550.

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