One of our kids jacked with our Nest thermostat so much that it stopped recognizing power from the Common wire. I think it caused a fault in the actual thermostat. Regardless, I replaced the nest with a basic non-programmable Honeywell. Heat is running fine but when I switch the fan from auto to “on” nothing happens. I have attached my current wiring setup. Any suggestions? I like running the fan to even the temperature in the home, add some air movement, and some air filtration.
Replaced Thermostat: Fan Won’t Stay On
- Thread starter JWolfe
- Start date
Fitter30
Well-Known Member
Jump R to G fan at stat should run . If not either G wire isn't G in furnace or wire is broken. White wire on "not used" is that common? At furnace with blower door switch taped depressed
R to W,G, Y if calling 0 vac
If not 24vac
C to W,G,Y if calling 24vac. Brand and complete model # of stat? If blower runs jumped the thermostat programing is wrong. Have to set up type of equipment.
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