I just installed the RTH2300B thermostat on my gas f/a furnace. The furnace will cycle on / off but the fan runs consistently. Yes 'auto' is selected for the fan!
I am guessing that one of the wires is installed in the wrong slot, any ideas? Honeywell was no help, do the wire colors correspond to the letters on the thermostat terminals? If not then what is the correct order?