Furnace Blower Fan Won't Turn Off
Asked Sep 23, 2005, 10:37 PM
Last night I installed a brand new programmable Honeywell to replace my the ancient mercury Honeywell that was on the wall. I have a 20+ year old forced air gas with central air.
The side effect has been that the furnace blower will not shut off. Whether the system is in "heat" or "cool" or "off" and the fan in "auto" or "on", the blower will not stop running.
The wiring was fairly simple from the first four lettered terminals was as follows: G (Green Colour), Y (Yellow Colour), W(White Colour), R (Blue Colour) all matched up between both thermostats. However, on the old Honeywell, the 5th wire (Red Colour) was labelled "A". I took this to mean Rc. I put it in the Rc position and now the fan is on all the time.
I would appreciate some help on this.
Please help me, it is getting cool very quick here in Ontario.
Last edited by dubya; Sep 24, 2005 at 06:41 AM.