Question about Heating & Cooling
Hi what the problem is, the contactor coil is 24 volts and is controlled by the thermostat, If it pulls in and out, the 220 volt contacts, you more then likely have contacts that are worn in your stat and not the contactor. This is the only other part that controls the coil on the contactor. It takes very little wear on the contacts in the stat to bring on the contactor or cause it to short cycle on and off like it has been. Check out all of your wire, control wiring from the thermostat to the unit, and I would replace this stat and solve your problem. Please keep me posted on this and I will check back in with you. The stat is your problem though. Please don't forget to rate me as I know you will be kind, and let me know the out come or if you need my help on this.
A/C, Heating, & Refrigeration Contractor
Posted on Sep 06, 2010
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Posted on Jan 02, 2017
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