Tried starting up my gas furnace this year everything seemed fine it lit but only stayed lit for about 8 seconds. I cleaned the thermocoupler and it still did the same thing. I replaced the thermocoupler and still has the same problem.The one thing that I have noticed is the draft inducer just keeps running is it supposed to run all the time?

I have a york gas furnace that ignites stays on about 8 seconds then goes out, checdked drains and thermostat help!

I have a york gas furnace that ignites stays on about 8 seconds then goes out, checked drains and thermostat help!

I have a york gas furnace that ignites stays on about 8 seconds then goes out, checked drains and thermostat, it worked the first time I started it, the next time no go.

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Originally Posted by neubauer

I have a york gas furnace that ignites stays on about 8 seconds then goes out, checked drains and thermostat, it worked the first time I started it, the next time no go.

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Clean the flame sensor.