Not cycling properly

crmiller · #1 Dec 6, 2006, 02:35 PM

My fan and gas shuts off after only a few minutes in the heating cycle and restarts again shortly, only to shut off again....and so on. I think it's the fan limit switch but don't know if I should replace it or try adjusting the limit. Any advice???

chris051873 · Dec 6, 2006, 04:34 PM

Quote:

Originally Posted by crmiller

My fan and gas shuts off after only a few minutes in the heating cycle and restarts again shortly, only to shut off again....and so on. I think it's the fan limit switch but don't know if I should replace it or try adjusting the limit. Any advice???

hello,,,
this was happening to me on my carrier furnace,,and also it would not even start the blower,,my problem was a bad motherboard after the heating contractor replaced some sensors and switches,,hope this helps

NorthernHeat · Dec 7, 2006, 04:21 PM

Dirty flame sensor, overheating? Could be something else.



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