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My furnace blowers turn on and then the heat blowers will blow fire into the furnace for about 5-10 seconds, then turn off and the blower will continue about another 5 seconds and the cycle repeats.

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Hello Sharon Witherspoon,

No ake or model came thru w/question...(?).

At some point your heater will attempt... via a heat sensor, that the FLAME IS ACTUALLY ON...

These are varied configurations..

As it fails to "sense" the heat it will shut off...
and recycle

(I believe this should only repeat a VERY FEW TIMES... so as to not cause an EXTREME DANGER to the user.

On old style heaters this is done by a "THERMOCOUPLE"

I have every confidence ... if you check the OWNERS MANUAL
you will find the trouble shooting.. will point you in this direction...

Make & model.. and search for you paper on the internet
if you do not have your original papers.

hope this helps.

Posted on Dec 14, 2016


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