I would guess you have done this, but just in case, have you cycled the power to the furnace? Ours gets screwed up if someone moves the thermostat button from heat to off to heat quickly. By turning the power off to the furnace, waiting a few minutes, turning back on the power, it resets the system and all is good. Hope it helps.
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Originally Posted by superbooos
thought i would revive this very old thread since this just happened to my furnace.
we moved into a 10 year old house 3 months ago and had the ducts cleaned and changed the furnace filter and bought a programmable thermostat. Last night the furnace wasn't working and my husband changed the batteries and bought a new thermostat and changed it back to the old thermostat but the fan doesn't come on automatically and when you turn the fan on, it only blows cold air.
any recommendations on heating service guys? we checked homestars and airworks and buttons heating seem to have high ratings. does anyone else have anyone they would recommend that won't try to rip us off into buying a new furnace?
TIA!
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