Question about Honeywell Programmable Thermostat Heater

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My heating/cooling blower (not the outside unit but the fan in the garage) does not turn off, even when my Honeywell TH8000 is set on automatic. What can I do to have the fan motor shut off?

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  • TSandell Jan 25, 2009

    I have the same problem and am looking for a solution. Does anyone know a tech support number for Honeywell? If so please send to pctinas@yahoo.com



    Thanks

  • Anonymous Feb 21, 2009

    Same problem. Just change my Termostat thinking it was defective. The blower will not shut off on auto.

  • knocknow Mar 01, 2009

    Inside blower fan runs all the time on heat, but cycles on cooling. The unit warmes up and shuts down but the blower stays runing. After a hour or so the unit goes back on and it warms the house and shuts off while the blower never shuts off.

  • Scott Magill May 11, 2010

    Is the fan in the on position on the thermostat? It sound like it is on instead of auto. What kind of heat system do you have? Is air hot or cold ? When you turn heat down does fan still run? You can disconnect green wire on back of thermostat. I this a new thermostat that was just installed if so wires are not connected wright. If not you might need new one. You could have a problem with heater to. Does heater turn on when thermostat is turned up and go off when it reaches desired temperature?

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Try hard wiring your 24 volt that goes to the outside unit to the yellow wire coming back from your thermostat make sure the yellow wire is on the yellow terminal on the thermostat (honeywell) i have run into situations when this seemed to be the only thing that worked

Posted on Aug 25, 2010

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1 Answer

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What are you trying to wire up?
Typical Thermostat Wiring for 4 or 5 wire Heat/Cool Thermostat (not heat pumps)
4 Wire Termostat
R = Red One Side of 24 volt Transformer
G = Green Blower
Y = Yellow Cool
W = White Heat
5 Wire Thermostat
with one transformer for both units
Rc One Side of 24 volt Transformer
Rh Jumper Rc to Rh
G = Green Blower
Y = Yellow Cool
W = White Heat
5 Wire Thermostat
With 2 transformers one for indoor unit
And one for outdoor unit
Rc = Red One Side of (outside) 24 volt (outside transformer)
G = Green Blower (outside transformer)
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R = Red One Side of 24 volt Transformer
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Y = Yellow Cool
HEATING ONLY
R or Rh One Side of 24 volt Transformer
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