rewiring thermostat


Old 05-28-04, 06:52 AM
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Location: Deer Park, N.Y.
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Exclamation rewiring thermostat

while remodeling, i decided to disconnect and reconnect my thermostat wiring. needless to say i didnt record just how the wiring was before i disconnected it.

this is how my furnace is wired.

twin w2 w1 red grn bl yel
= = = =
= = = =

green white red blue


the thermostat wiring says the following.

c w w2 r g y y2


i havent the foggiest idea how to rewire it, can anybody help ?

i have a trane xl80

gas forced air
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Old 05-28-04, 07:18 AM
Ed Imeduc's Avatar
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Location: Mountain Williams Missouri
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Dont know what tstat you have but this is what you need.
see what that blue is on in the furnace?? write down the colors there then go to the tstat. Should be a schermatic on the blower door of the unit.

R is power

W is heat

Y is compressor

G is fan

W2 is 2nd stage heat

Y2 is 2nd stage cool
C is common

Old 05-28-04, 07:23 AM
KField's Avatar
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I would suggest waiting for another member here to confirm what I will assume is the correct wiring.

I tihink you are saying that you have 4 wires at the thermostat location and they are Green, White, Red, & Blue.

You can be poretty sure that the Red and Green wires go on The R and G terminals. That takes care of power and fan.

The white wire should go on the W1 terminal and that takes care of heat.

The blue is the only one left and if you have air conditioning, it would need to go on the Y terminal. If you don't have air conditioning, it could go on the C terminal or may not matter at all.

I am assuming you have a gas furnace and no heat pump.

Old 05-28-04, 07:39 AM
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i have a white-rogers thermostat and i dont have a/c, heat pump.

i'll give the wiring a try and let you know, thanks for the quick reply
Old 05-31-04, 05:17 PM
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i agree once again!

R to red
G to green
W1 to white
Y to blue

that configuration is very common here in georgia where 4 wire is used and there is no yellow wire
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