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During a violent thunderstorm, our air conditioner unit stopped working. The unit looks ok, but I wonder if the thermostat might have been surged?

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Turn fan from auto to on, if it comes on low voltage should be ok.
Unit may have a breaker or fuses located inside if it's a package unit.

Posted on Aug 19, 2008


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My power was cut off was off for one

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Where is the fuse box?

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It sounds like you're looking in the right place. Check your power panel for a tripped circuit breaker (maybe more than one) or if the home is older, it may have fuses. It's possible that the outdoor disconnect also has fuses but that's not as likely. You can check around the outdoor unit and see if you smell anything burnt.

You can aso turn off the unit at the thermostat, wait a few minutes and see if the unit starts back up, but check the items listed above first.

Jul 17, 2010 | Goodman CKL42AR42 Air Conditioner

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We had a thunderstorm and my thermostat died (carrier), now my upstairs unit is not working!

You amy have a blown fuse in your AIr Handler. There is a small 5 amp auto fuse on the fan board on the inside unit. You can replace this yourself. Just open up the panel and you will see on top a solid stae board with a 5 amp fuse plugged into it. Shut off power before you do this ok. Rud

Jul 18, 2009 | Heating & Cooling

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My maytag m7y12f2a stopped working is their any reset buttons

All devices that have circuit boards or digital displays need a surge protector or turn off during storms. If none of the functions or dispays don't come up, there may be an inline fuse on the panel. More than likely the board or transformer is fried. For that you need a Tech.

Jul 09, 2009 | Heating & Cooling

1 Answer

Stopped working smells like something burned?

If this is a ducted unit with a wall mount thermostat, remove the inside cover from the AC unit. There is a silver box with the electronics inside. Remove this box and remove the cover. Visually inspect the connections where the 120VAC connects. If that looks ok, then check the relays on the printed circuit board. If these look burnt, replace the control box. If they look ok, check to see if there is power coming in to the unit. If not, check the breakers and make sure they are ok.



Jul 05, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

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If the compressor never kicks in, I would check the start capacitor, thermostat and the compressor windings. Most times the start capacitor is defective. Some window air conditioners the fan will run while the compressor stop through the thermostat switch. If the thermostat switch is bad every thing runs except the compressor. Let me know, Thanks, Sea Breeze

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1 Answer

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13500 unit will not come on year 2000

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1 Answer

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Probably power surge shorted out the main board. If so it will need to be replaced. Gotta call for service.

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