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Air Conditioner Won’t Turn On? Here’s What To Check

Posted on: June 9, 2015

If your Air Conditioner has suddenly stopped working and won’t turn on, there are several things to check.

1. Make sure the thermostat is set to “Cool” and not been accidentally moved to “Off” or “Heat”.
2. Ensure the the thermostat temperature is set low enough to activate the AC unit.
3. Check that the external safety switch is set to the on position. This switch is usually located on an exterior wall near the condensing unit.
4. Check that the circuit breaker that controls the air conditioning compressor and the circuit breaker that controls the furnace blower or air handler, are in the “on” position. If a circuit breaker has tripped, reset the circuit breaker. If the circuit breaker cannot be reset, do not try to reset it again. Have a qualified technician check the unit to determine the cause of the problem.

If the air conditioner still won’t turn on, call ABC, we can quickly diagnose the problem and recommend solutions to fix the problem.

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  • “Keith and his crew were top notch. Calm/cool, trustworthy, efficient, respectful, reliable, thorough, communicative and reassuring. And at the end of the day, quality work! For the bigger projects, I feel confident knowing we have a go-to service to call.”

  • “ABC Plumbing, Heating, Cooling and Electric are fantastic. I recently used them to replace my sump pump, which had exploded! They were very friendly on the phone and Rick H., our technician was fantastic. He explained things thoroughly, we was efficient and very nice. Will definitely be using him and…”

  • “On only a day's notice, Adam came very prepared. He knew immediately what was the issue in each case. He replaced one toilet and repaired another. The bathrooms were left in great order and very clean. I am looking forward to having more work done by Adam and ABC.”

  • “ABC was reliable and professional. Mike G was our technician and was a pleasure to work with. Down to earth, no pressure and gave you a straight answer to what you needed. Felt like I got an honest appraisal and was given a great quote. Will be calling them back…”

  • “You never know for sure what you'll get when you need a contractor in a pinch. I chose ABC Plumbing out of my 2017 Best Picks Report for contractors because ABC was their top choice. After working them, I will use them again and tell everyone who needs this kind…”

  • “EXCELLENT and FAST service provided by ABC plumbing and superb work at our home provided by Tom Glaza. He fielded, diagnosed and fixed all electrical issues. Tom is knowledgeable, friendly, efficient and explains everything in detail to customer so you know what he is fixing and gives accurate up front…”

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