Question about Heating & Cooling
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Posted on Jan 02, 2017
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
you have to go down to your furnace and follow the thermostat wire ...it connects to a terminal strip or fan centre...the color doesn;t really matter...installers mix and match all the time....look at the furnace wiring and mark it down...Red on "R"...Green on "Y" whatever it is...and connect it accordingly upstairs...if you only have 4 thermostat wires downstairs you will need a jumper wire between RH and RC...if you have 5 wires you will see 2 wires on "R" at the furnace.,...and connect either to RH and RC at the thermostat
Posted on Nov 01, 2009
The Vision Pro is a great t-stat and I have installed many of them with great results. I am wondering though if it is set up correctly. Did you go in and make sure that it is set for heat pump and for 2 stage heating? Look on the instructions how to get into the advance installer options. Go through that meanu and make sure that everything ig set correctly for your type of heating system and that it is set for 2 stage heating. From what you have here and I can tell the wiring should be okay that is why I think that it is in the t-stat programming.
Posted on Nov 16, 2009
I can give you a general idea, but unless I know what colors you have and where they are hooked at the furnce/airhandler I am shooting in the dark here.
The R is usually red, the W1 would be white, the Y would be yellow and the G green. in your case where the Y and W1 are together the W2 is probably the white. The X3 is whatever is left over, probably black or blue.
If you shorted the wires you probably tookout a fuse or the transformer in the airhandler/furnace. That will need to be replaced before anything will work.
The R and the X are the ones that you really need to watch that they don't short out, and the R needs to not touch anything metal.
It is best to kill the power to the airhandler/furnace before changing any t-stat then you don't need to worry abut killing anything.
I hope that this will help you to solve your problem!
Thanks for using Fixya!!
Posted on Nov 27, 2009
SOURCE: where does the W2 wire go?
w2 wire is second stage heat does your furnace have two stages.look at gas valve it would have 2 valves/ sol w2 will go to w2 on stat. if a single stage furnace w2 is not used
Posted on Jan 25, 2010
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