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REPLACING WEATHERTON TRANE MODEL THERMOSTAT #BAYSTAT239.......8 WIRES G O X2 Y T R W B HONEYWELL TH4210D HAS .... E AUX Y G O L R B C SO WERE DO THE COLOR WIRES BLUE BLACK WHITE TAN GO ON THE HONEYWELL TRANE IS A MODEL 900XL HEAT PUMP/AC

Submitted: 327 days and 14 hours ago.

Category: HVAC

Value: $9

Status: AWAITING CUSTOMER ACTION

Good Afternoon and welcome to just answer.
from the old to new
G from old should be green to g of new
O from old should be orange and go to O
X2 should be black on old and go to e on new
Y should be yellow on go to Y on new
T should be brown or tan and should be capped off.
R should be red and go to r
W should be white and go to Aux
B should be common on old and be blue. test this with meter from red to b and you should get 24 volts. If it is it should go to C on new thermostat.
I believe I answered your question. Please hit accept as this is what pays me. If

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Accepts:
Expert:	Mr. Case
Pos. Feedback:	100.0 %
Answered:	12/30/2008

HVAC Technician

I am a service technician at Accurate Mechanical.

327 days and 14 hours ago.

Reply

was tan on old emergecy heat or heat strip ?

Posted by Mr. Case 327 days and 14 hours ago.

Answer

Tan was to adust hit anticipator for the thermostat.

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