Question about Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: i am replacingh my thermostat.
Thanks for your Question,
B- is your common leg,
RH- is your hot to heating
RC1- you will not need
RC- you can use if you remove the jumper for cooling
Y1- you will not need
G- is your fan
O is not needed, wires should be hooked in as follows,
RH- red wire, heating
RC- Yellow wire, Cooling
G- Green wire, Fan
B- Blue wire, for common leg, this one might be a different color so make sure at the furnace which T-Stat wire is connected to Common, you should check all the wiring at the furnace to make sure this pattern of wiring is followed, it should be standard practice to hook them up this way, but not all installers do it, thanks again, please rate this,
Posted on Jan 25, 2009
Check to see if you have the system switch accidently on em. heat. The way you have it wired is correct except for the having brown on e. disconnect brown wire and cut ofbare end just in case they have the wire hooked up for constant run on roof.
Posted on Feb 16, 2009
SOURCE: Thermostat wiring
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Thermostat wire color codes
Please note. Not all installers use the proper color codes when they install or replace equipment. It may be necessary go go to the furnace or outdoor unit to verify what wires are for what purpose. Also be sure there are no splices in the wire that could change the wire colors between components.
Posted on Jun 02, 2009
SOURCE: Wiring Trane/Honeywell TH8320U
use the outside designations for heat pump, and inside for standard, I would assume a heat pump since you have more than five wires attached to it now. Use the colors of the wire to match to the designations, use tan for y2, black for w2 rc and rh should already have a factory jumper. I would have to trace out the "U" and see where it terminates, I have not seen a bare wire on a stat in 27 years of doing this. before powering, verify the tan and black at the indoor unit circuit board and see if they are landed on the terminals designated at the stat. hope this helps
Posted on Jul 27, 2009
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