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    nomiddlename's Avatar
    nomiddlename Posts: 2, Reputation: 1
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    #1

    Nov 30, 2015, 03:13 PM
    No power to Carrier Debonair 220 thermostat
    I have no power to the Debonair 220 thermostat (heating and air), no light. As result we cannot put on the heater. Where does it get it's power? Do I need to crawl in the Attic to start tracing the wires. Eventually, the wires come down into the furnace.

    Dan
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #2

    Nov 30, 2015, 06:27 PM
    If you Google the manual for your unit you will see it is 24VAC . Therefore, make sure you have power to the control board, look for a bad fuse, and you should measure 24VAC across the R and C terminals on the thermostat. You may have a bad transformer but you will need to do a little troubleshooting. Here is the manual
    https://quobensspokle.files.wordpres...bonair-220.pdf
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