Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
On most applications for heating the red and white wires are used,however I would check what wires are connected to terminals on old thermostat. These connectons should be labled with initial of wire color,such as R,W,G,Y or Rc. If your green wire is hooked to R or whatever just hook new thermostat up like the old one and you should be ok. Hope this helps. Thanks.
Posted on Nov 12, 2010
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Posted on Jan 02, 2017
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