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Furnace will not come on, need heat!

The Furnace worked fine last year and now it does not? I am sure that it is something simple but I have no idea how to fix it.

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  • Anonymous Nov 06, 2007

    my furnace comes on but it but there is no heat. I have noticed that the heating element is not glowing to ignite the gas jets. I have changed the filter.

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If your heater is like mine...

There is a small window about the size of a quarter inside

the panels on the front part of the heater.

The panels must be removed to see it.

It might look like a hole but glass is there.

Inside the window an L.E.D. light might be blinking.

If this is the case, count how many times its blinking.

the number of blinks represents the nature of the problem.

 

if it blinks 3 times its possibly either a small outflow fan isn't working or something is blocking the vent which prevents a flow detector from making contact.

The reason it shut down is because of the fear of carbon monoxide poisoning due to no ventilation.

Try looking into the vent pipe from the top of the roof to see

if there are any obstructions.

If there are no objects blocking the vent pipe then maybe a fan or transformer has malfunctioned.

The light blinking 3 times refers to the combustion air switch.

It works as a vacuum chamber to work the contacts inside it.

Posted on Oct 14, 2007

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Birds nest or spiders. could also be a partial pilot tip plug.

Posted on Jan 05, 2008

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1st. the induced draft fan (tiny one inside) should start up. then 30sec or so later you should hear the gas valve "click" then your electronic ignition control should start to glow red (assuming you dont have a pilot lite). if that thing doesnt glow red, three isnt a way for the gas to light. ive seen this many many times before.

Posted on Nov 09, 2007

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