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Home a/c intermittent during rain

A/c running well, then it rains .... and the inside unit and thermostat ok, but the outside unit continues to run and will not cycle off. Go to thermostat and use off switch ... nothing .... Must now go the the breaker box and turn off because outside unit still running. Just had a/c tech out and install new thermostat .... intermittent problems continues.

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You need to check the contactor. It sounds like the contacts may be getting close to the end of their usefulness and they are welding themselves closed. Check that and let me know what you find.

Posted on Jul 29, 2010

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Posted on Jan 02, 2017

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