I have a Hunter autosaver 550 and now that the weather is changing I turned on the heat but nothing happens. The air conditioning works fine but the heat won't come on, any ideas? I have a heat pump system and I thought I hooked up all the wires correctly but I guess something is missing.

Need eyes on for that one I think.

Go to https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html

After studying the thermostat wire colors, post back if you need more help.

Hey it turned out that I didn't have the white wire connected, also on the back I through the switch from "HG" to "HE" and it came on.

Thanks so much for your help, I'm going to put this site in my favorites for future use.