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do you mind a test at the thermostat ? We would need the front section off to where we can see the wires
steady light means no signal from thermostat.
Can be low batteries (if in thermostat), bad thermostat, bad thermostat wire.
At thermostat find terminals R and W...use a paperclip shaped in a U and connect R to W...
If furnace starts =bad thermostat (or batteries)
If furnace does not = bad wire connection in the thermostat wire
just respond when you have a chance to try this.
And also keep this on your end without responding..or rate service. If you reply, the system forces me to reply.