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Help... My problem seems to be my furnace works fine if i manually cold start it but once my unit gets hot it wont restart the jets wont stay lite and the fan will not come on but if it hasnt been running and is cold its starts fine ???

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Re: help...

If you were experiencing a failure just after a heating cycle but not on a cold start, I would suspect an electrical component failure. As the component cools, it makes contact and allows the furnace to operate. This will change and not for the better. Depending on what your system has for electrical components, I suspect either a relay or transformer. At any rate, get a technician in front of it so he/she can diagnosis it under both cold start and hot start conditions. It will help if you turn off your system so it will be cool when the tech gets there.

Posted on Nov 26, 2007

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