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01-02-2013, 12:55 AM
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#1 |
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Newbie
Join Date: Jan 2013
Posts: 2
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Lennox 80mgf 3/4 100a-5
Furnace fires while under ignition but shuts off. Thermocouple or flame sensor? How would I clean the sensor? Thanks.
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01-02-2013, 02:43 AM
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#2 |
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Experienced HVAC Tech
Join Date: Dec 2012
Location: Northern Colorado
Posts: 188
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Lennox 80mgf 3/4 100a-5
You can best clean it with a scotch brite pad. I've heard of some techs that like to use dollar bills the clean them off too. Do not use sand paper or anything very abrasive. It will create large scratches that will make the sensor dirty much faster
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01-05-2013, 02:50 AM
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#3 |
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Newbie
Join Date: Jan 2013
Posts: 2
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Lennox 80mgf 3/4 100a-5
Thanks for the tip. Can I just reach in and clean it or do I have to take the sensor out of the burner tube?
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01-05-2013, 09:49 AM
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#4 |
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Member
Join Date: May 2010
Location: winnipeg manitoba canada
Posts: 711
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Lennox 80mgf 3/4 100a-5
take it out....
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