Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
On the old thermostat how many and what terminals did you have?
R = Red One Side of 24 volt Transformer
RH = Usually jumpered to R or RC
C = Common the other side of the 24 volt transformer opposite the R
G = Green Blower
Y = Yellow Cool
W = White Heat
Posted on Jun 01, 2010
I have a TB8220U comm prog stat used on a oil burning furnace and a-c unit but the fan on the furnace runs all the time when a-c is off can you help me ?
Posted on Apr 30, 2011
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Posted on Jan 02, 2017
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