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Old 12-17-2009, 09:31 PM   #31
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


I'm tellin!

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Old 12-17-2009, 09:53 PM   #32
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Ya I hear you man! I agree better Edmonton than us...Tonight is -16 probably alot more cause of that darn north wind...but this is nothing compared to you guys..Waiting any day now for a nice dumping of snow!!!!!!!!!!!!....Well have a good one and I will keep you and the other fellows posted...Good night Gents!

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Us Canucks have to stick together eh? Went from -30C last week here to -11 today. Hard to get used to at first. Was -40 in Edmonton, better them than me/us. LOL.
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Old 12-18-2009, 02:11 PM   #33
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Update...Yuri thanks so much...everythings worked out...Im now waiting to see how it cycles thru....yes that hose was filled with crud! plugged to the bone...a lot of water come down exhaut boot....Sounds nice not noisy or gurrgly...You are a life saver!!!!!!!!!!!!.... Gotta run the Olympic Tourch parade is in my back yard and I wanna check it out!.... Have a great day!!!!!!!!!!!!!


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Slow down, a bit. This old guy can't type that fast. LOL. Lack of maintenance, that hose needs to be cleaned every year. Bugs fall in the exhaust pipe over the summer, die and turn into crud and plug the hose. There is a complete new exhaust pipe conversion kit but it is expensive and a Lennox guy would have to install it for you. Clean the hose once a yr and you should be okay.
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Old 12-18-2009, 04:24 PM   #34
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Alls well that ends well!!
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Old 12-19-2009, 07:44 PM   #35
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Hey Yuri
ANother quick question. What can I do as a DIY yearly furnance maintenance program besides changing the filter ever 3 months? Your thoughts!
Thanks
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Old 12-19-2009, 08:54 PM   #36
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Back tomorrow with info on cleaning the flame sensor etc.
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Old 12-20-2009, 09:35 AM   #37
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Do this procedure ONLY if you are VERY patient as it is VERY easy to break the flame sensor.
1)Remove burner box cover, 2 screws underneath and 4-5 on front
2) Locate flame sensor which sits in front of left burner, has white porcelain and 1 wire to it and a 1/4" hex nut
3) Remove the nut and VERY CAREFULLY maneuver the sensor left/right up/down/sideways, you can do it, until you can pull it out and remove it and lightly sand it with clean fine emory paper
4) Cut a small piece of emery paper and stick your hand in with it and lightly sand the face of the left burner
5) Furnace uses DC flame rectification and the electricity jumps from the flame sensor to the left burner thru the fire (rectified) and travels back to the circuit board to prove the flame. If the burner face is dirty it works like insulation
6) Reinstall sensor and wire
7)Look above the burners where the intake pipe attaches, there is a screen, if there is debris on the screen remove the intake pipe at the top of furnace (4 screws) and clean the screen, leaves etc can get stuck there
8) Send Yuri a bottle of vodka for Xmas, just jokin

Last edited by yuri; 12-20-2009 at 09:40 AM.
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Old 10-12-2010, 12:51 PM   #38
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Yuri, I'm sending you 2 virtual bottles of Vodka!

I followed your instructions for my Lennox elite furnace as it wasn't staying on. Sure enough, the small black hose was full of crud. Cleaned that, and then looked at the flame sensor. It seemed a little awkward to remove, so I borrowed my GF's emery board (fine) and cleaned one side of the sensor and the face of the burner. Now the furnace stays on!

Thanks again Yuri!
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Old 10-12-2010, 06:33 PM   #39
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


Yep, I do a dozen calls a yr like that. We try take care of it during an annual maintenance check.
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Old 10-12-2010, 06:44 PM   #40
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HELP- Lennox Elite Series Furnace # M/N 90UGFA3-75-5


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Yuri, I'm sending you 2 virtual bottles of Vodka!


Thanks again Yuri!



That info wasn't worth at least 3 bottles ??

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