Question about Heating & Cooling
The switch you are talking about can be checked. Turn power off to unit. Disconnect wires on both terminals of this door switch. Next use a meter that will show Ohms or just connectivity to see if switch is closed when pressed all the way in. You could use a cheap meter from auto parts store to see if switchis good. You could remove switch and take to automotive parts store and they would actually check for you. If that device is good. Please follow wires from main power and see if there is a fuse before or on the main control board.. There will be a transformer that converts supply voltage to 24 or 28 volts and when turning power on that transformer will become warm and have a very small humming noise.. let me know what you find and if you need anything else.
Posted on Aug 29, 2010
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Posted on Jan 02, 2017
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