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Old 02-13-2008, 08:11 PM   #1
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thermostat problem


My gas heater thermostat does not start the fan in automatic mode. I have to swith th 'ON" to start the fan It has been working fine until recently. Can any one help?

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Old 02-14-2008, 07:21 AM   #2
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thermostat problem


Sounds like a problem with the furnace, not the thermostat.

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Old 02-14-2008, 08:28 PM   #3
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thermostat problem


Thanks I will check it out
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Old 02-14-2008, 08:40 PM   #4
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thermostat problem


it is either your fixed fan disc or adjustable round dial honeywell(fan comes on after the heat exchanger heats up) or thru the solid stat board on a timed delay after the burner comes on,
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Old 02-15-2008, 09:30 PM   #5
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thermostat problem


could be fan switch, overload safety device, t-stat, etc. process of elimination.
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