DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > combustion fan won't shut off




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Old 10-29-2007, 01:10 PM  
yimmortal
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Default combustion fan won't shut off

nordyne furnace, propane, about year 2000
no circuit board, just relays and basic stuff

when i turn on the power, the combustion fan runs constantly. won't shut off.
this blows out the pilot light

any ideas?



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Old 11-23-2007, 10:51 AM  
matthewwj
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This could be caused by a few things, does the thermostat keep the temperature, meaning regularly turn on and off? If so, you might have some wiring issues from the thermostat i.e, a short, or improper wiring to the furnace.

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