Someone please tell me where the flame sensor is located (see photos)


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Old 01-26-11, 06:36 PM
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Someone please tell me where the flame sensor is located (see photos)





 
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Old 01-26-11, 07:25 PM
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You have to get into the burners chamber. The flame rod is in there.
It looks a nail right beside the burner and it would have one wire tied to in. The need to be cleaned with some sand paper every few years. It might not look dirty but they get a coating built up on them.
Check that water leak in the right corner under the black inducer fan.
Water coming out of the 90+ furnace has a little acid content, so that will rust through the metal. later Paul
 
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Old 01-26-11, 09:10 PM
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Looks like those 2 yellow wires going up under the sight glass,,,

Mike NJ
 
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Old 01-26-11, 09:20 PM
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No, it is not the two yellow wires.

I really can't tell from the picture.

Paul's advice is good.
 
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Old 01-26-11, 10:00 PM
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The two yellow on the right look like a thermal switch. The two yellow on the left look like they go to a a screwed in plate. The burner looks like its up on the right around the corner. I see no wires going there.

Whats the make and model# of the furnace.

MikeNJ
 
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Old 01-27-11, 04:46 AM
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DO NOT USE sandpaper to clean the flame sensor! Use a dollar bill to clean the sensor.

Remove the burner cover, and it's on either the left (It may be this one) or right hand side of the burner with a single wire going to a metal rod. (not the two wires one.)
 
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Old 01-27-11, 09:52 AM
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Thanks everyone. Not home right now so I dont have the model #. Yeah that water leak really concerns me. Is there anything I should do prior to calling the tech?
 
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Old 01-27-11, 11:05 AM
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Didn't look at the photos till now.... Looks like the furnace hasn't been cleaned/checked for awhile!

It could be a gasket or a cold header crack.
 
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Old 01-27-11, 12:01 PM
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can you get a picture from around the corner later
 
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Old 01-28-11, 05:45 PM
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Not too likely but it could use the HSI for flame sense. Only equipment I've seen with a gas valve like that is Goodman & Trane but I don't work on that much gas stuff.
 
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Old 01-29-11, 12:52 PM
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in the burn box. You will need to open it. Clean the sensor with sandpaper and that will help. Also you need to look at the water since you have a leak (not RTV arund pipe etc)..And clean the thing!
 
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Old 01-29-11, 04:12 PM
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Originally Posted by dargo
Clean the sensor with sandpaper and that will help.
NO! DO NOT use sand paper on the flame sensor! That will shorten the life of the sensor.. Just use a dollar bill to clean it.
 
 

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