PDA

View Full Version : No power to Carrier Debonair 220 thermostat


nomiddlename
Nov 30, 2015, 03:13 PM
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
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.wordpress.com/2015/08/carrier-thermostat-instruction-manual-debonair-220.pdf