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DIY & Home Improvement

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Marthe48

(23,841 posts)
Fri Jul 3, 2026, 06:17 PM Friday

My a/c kicked off [View all]

The thermostat readout was blank, so I replaced the batteries. The screen lit up, and said the temp was 82. The fan came on, but the Auto set didn't work. I went to the basement and checked the breaker boxes, but none of them were tripped. I don't know much about the HVAC. I don't know if it has its own box somewhere away from the main boxes I have. I realized as I was looking that if the circuit tripped, the fan wouldn't have come on. I came back upstairs, and tried the thermostat again and the A/C came on and is working now. I had it set at 74 since June 24. I've turned it up to 81 to baby it. I'll try turning it down until I go to bed. None of the other electrical devises kicked off.

Is it possible that the system shut off because the thermostat needed batteries? And it took the system a minute or 2 to kick on? The whole unit was new in 2008 or so.

I'll call for a check up on Monday, but pretty sure I'll have a wait.

Any opinions on what might have caused it to kick off? Thank you!


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