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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 7768
Experience:  Furnace, A/C and heat pump specialist.
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My Amana heater was installed 7 years ago and has worked

Customer Question

Hello, my Amana heater was installed 7 years ago and has worked great. In the last few months it seems to be on through out the day blowing cool air through the vents. If I turn up the heat it works fine. For some reason the fan is on throughout the day.
Submitted: 10 months ago.
Category: HVAC
Expert:  Rick replied 10 months ago.

Do you have the thermostat fan switch set to ON?

Customer: replied 10 months ago.
No, the thermostat fan switch is off.
Expert:  Rick replied 10 months ago.

I'm going to open this backup to my colleagues so one of them can help. Please don't respond (even to acknowledge this post)until you get a response from us. If you respond first it will only delay your answer.

Expert:  airheatman replied 10 months ago.

Many of these high efficiency units allow the blower to come on to help control humidity even when not actually calling for heat or cool. Some are controlled through dip switches in furnace and some through thermostat.What thermostat are you using?

Expert:  airheatman replied 10 months ago.

If you have a Comortnet communicating thermostat (Model will be on or inside front cover) we may be able to turn this feature off if it is bothersome. Just let me know model on thermostat .

Expert:  airheatman replied 10 months ago.

Let me know and we can go from here

Customer: replied 10 months ago.
My thermostat model number is:
1F95EZ-0671PL.
Expert:  airheatman replied 10 months ago.

OK it does not look like the 1F95 has the humidity control so let me take a look in furnace manual.

Expert:  airheatman replied 10 months ago.

Quick question, do you have a humdifier in ductwork that is connected to the furnace?

Customer: replied 10 months ago.
No I don't have a humidifier in duct work.
Expert:  airheatman replied 10 months ago.

Look on control board for a switch that says DEHUM and make sure it is set to OFF. See below

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