Pilot light lit but heat not blowing through vent (YorK Furnace)

Sean_29

My 19 year old York Furnace, all of a sudden, stopped blowing heat through the vents. I left the heat on 70 degees and found my house to be freezing this a.m. No air is blowing through my vents. Can someone help?

ed wallace

no heat

maybe the blower belt is gone,bad thermostatto many other things call for help

Sean_29

Thanks I will take your advice

Ed_26

no heat

Turn the system switch on...

Sean_29

It's on. never turned it off. It was blowing and then stopped by a.m. when I noticed lack of heat.

Unknown

Do you have

24 volts to the gas valve? If so and there is gas to the unit which I assume is the case as you say the pilot is lit. Then the gas valve may be bad or the ground connection back to the transformer from the valve may be bad.

If no 24 volts to the valve then check the secondary of the transformer for 24 volts if that is good then some control or a broken wire is at fault. If there is no 24 at secondary fof the transformer then do you have 120 volts to the primary. I assume the 120 volts to the unit is good as you say the blower is running.

If all of this is over your head then call for a professional.

Sean_29

Spark Box

Your message was helpful but I needed a professional. It was the spark box. ThanX