Gas furnace turns off after 10 minutes

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Old 02-11-19, 05:57 PM
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Arrow Gas furnace turns off after 10 minutes

Hi guys, I am trying to troubleshoot a possible issue here. The furnace ignites and runs for abound 10 minutes and it stops. I read it could be a flame sensor, but my ComfortMaker furnace (i assume late 90s model) doesn't seem to have one everyone is talking about, that looks like rod close to the flames. My furnace seems to have integrated flame sensor into the spark ignitor, I found a part on Amazon -Q3451B2010 (https://www.amazon.com/gp/product/B0...MXUXU1Z4&psc=1), mine it looks like just like that.

Do you think this is an issue? Should i just buy it and replace it or am I looking at something else? Can this be cleaned or needs to be replaced?

Thanks.
 
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Old 02-11-19, 06:23 PM
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What is the model number of the furnace?
What error is it failing on? If it runs that long I doubt it’s the flame sensor. Sounds more like a limit opening.
Is your air filter clean? What style filter are you using?
 
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Old 02-11-19, 06:39 PM
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Welcome to the forums.

It's not going to be an igniter/pilot problem. More likely a high limit like roughneck mentioned.
The model number can be found on an ID tag inside on the side wall near the burner.
 
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Old 02-11-19, 07:43 PM
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Thanks guys, the model# FBF125J20A4. How do I check for error?

I use Honeywell 10 FPR filters from Home Depot. I installed a new filter on Sunday and coincidentally this started happening right after. Could it be a bad filter? I am going to remove the filter and run without to see if it has any effect.
 
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Old 02-11-19, 08:02 PM
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Filter is likely too restrictive and the unit is failing on high limit.
Remove the filter and see if the problem continues.
 
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Old 02-11-19, 08:32 PM
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Wow, I believe you are correct roughneck, after removing the filter the furnace runs as expected.

What FPR rating would you recommend for this furnace then?

I really appreciate the help!
 
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Old 02-11-19, 08:37 PM
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Normally filters are listed with a MERV rating. This is the industry standard.
Without knowing your pressure drop or any other specifics I can’t suggest a specific filter beyond a basic blue fiberglass filter.
 
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Old 02-11-19, 08:44 PM
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FPR is the depot's numbering system. (filter perf rating) Close to MERV.
What were you using previously ?

Maybe use an 8.
 
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