We r trying to install a honeywell thermostat in place of the lennox one because it will not kickoff the furnace with the old one. Thought it looked pretty simple but do not know where the 24v(c)

I'm replacing a 23 year old manual Honeywell thermostat with a new digital Honeywell thermostat model RTH111. The old thermostat has two wires (colors white and red) but no designation on the terminals. This is for a hot water baseboard gas fired boiler. Which terminals do these unmarked wires...

I thought the transfer of wiring would be intuitive, but I was clearly mistaken. I have a heat pump with an aux electric furnace. Current connections are (by color) X - blue W2 - white R - red G- green O - orange Y - yellow E - brown Can anyone tell me where these should connect on the...

Hello Currently I got the Trane Thermostat BAYSAT240 controlling my Furnace - Heat Pump Combo My setup is almost the same as described in the posting called: Wiring Thermostat Honeywell 8320U to Furnace-heat pump Trane XE78+XE1000 Combo Except that I control everything from one Thermostat ...

I have recently acquired a residence that had a much older HA/C unit. The thermostat is a TRANE Baystat240 (3AAT80B1A1). Up till now it worked well. Recently both the heat and air were blowing at the same time. Go figure! LOL. I have recently attempted to replace the thermostat with a Honeywell...