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-   -   Thermostat wire codes do not match (http://www.houserepairtalk.com/f9/thermostat-wire-codes-do-not-match-5398/)

ufatbasted 10-12-2008 01:46 PM

Thermostat wire codes do not match
 
Hello

I'm attempting to install a Honeywell programable thrmostat to replace my old mercury white rogers t stat.


When I pull the old T stat it has 4 wires coded as follows
TC
T
RH
W.


The new thermostat mentions RH and W wires but I'm nit sure what the T1 and T wires are for. My guess is a timer as the old TStat had a timer and did not use batteries. I'm tempted to just cap them and go on with the install.

Anyone have any ideas?


Thanks

speedy petey 10-12-2008 08:03 PM

If this is just "heat only" you are correct. Use RH and W and cap off the others.

ufatbasted 10-12-2008 08:23 PM

It is heat only. I capped them right after I posted and got the new tstat working

Thanks for the info


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