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-   -   a/c - furnace fan keeps running (http://www.diychatroom.com/f17/c-furnace-fan-keeps-running-167756/)

yankfan7 12-30-2012 07:11 AM

a/c - furnace fan keeps running
 
Hi, My a/c - furnace has been running for quite awhile at a very low speed. My house is heated with in floor heat so fan is only used for a/c. What can the problem be?

COLDIRON 12-30-2012 08:26 AM

Check your thermostat is the fan switch in the auto or on position?

Tator1076 12-30-2012 09:11 AM

Limit stuck

wkearney99 12-30-2012 09:16 AM

First be sure nobody hit the switch on the thermostat that turns the fan on (instead of just being on auto). Then make sure the thermostat isn't the problem. Some are mounted with a base plate that the thermostat clicks into. If that's how your's is setup you could pop it out to see if that changes the situation. Otherwise it's likely to be control board in the air handler. Further analysis isn't possible unless you post the make and model number of the equipment.


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