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Question About Honeywell Thermostat RTH221
Bought RTH221 to replace CT3451, but see that sinc...

Bought RTH221 to replace CT3451, but see that since I have a R and RH wire, I can not use. What 1 week programable thermostat can I use?

Asked by Dan on 07/03/2014 1  Answer

ManualsOnline posted an answer 10 years, 4 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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