Faulty Flame Sensor on a Gas Furnace Troubleshooting Video
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- เผยแพร่เมื่อ 23 ส.ค. 2024
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Tim Smith from Hudson Valley Community Colleges details the entire process troubleshooting a faulty flame sensor on a gas furnace using the DOTS HVAC Troubleshooting Simulator.
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![[2019 GUIDE] Troubleshooting a Faulty Flame Sensor on a Gas Furnace](http://i.ytimg.com/vi/FG1nuLL7Z0Y/mqdefault.jpg)
![[2019 GUIDE] Troubleshooting a Faulty Flame Sensor on a Gas Furnace](/img/tr.png)
I'm a do it yourselfer when it comes to fixing thing. My furnace was doing exactly the same thing. Inducer fan would come, ignitor would glow, flames light and then the furnace shut down. I cleaned the flame sensor several times and it would intermittently work. I purchased 2 brand new flame sensors and again the same thing. Changed them out and they would work here and there. Frustrated, I watched more videos in the past 2 weeks than I watched in my lifetime. It turned out that it was the pressure switch. I have a 2 stage pressure switch. Don't ask me why I figured out or at least took a chance to buy one and replace it, but I did. I live in a rural area of the country and it would have cost me $500 plus parts to have it fixed. So, if any of you are having this problem like I did, check out your pressure switch. Furnace works like new! Great video you posted!!
Best step by step I've probably ever seen on this subject.
EXCELLENT. Hands down best video on this topic - I've watched quite a few as my house is quite cold in anticipation of a solution.
Evan Roth AZ of BBC
OUTSTANDING : Without any doubt , best video that I've seen as of yet !!!
Excellent video I’ve ever seen. Explaining step by step perfectly in every video 👍
Thanks, Greg!
Good visuals
THANX
Great video...Keep them coming
Excellent, really helpful video! Thanks
I was getting an attempt for the gas furnace to start and then quit going into lockout. I cleaned the flame sensor and reinstalled it with no difference. Meter is series with the flame sensor provided zero dc miro amp reading. Replaced the electronic board and the furnace is working great. The board is one of the top 5 things to go. It was on a Carrier Gas Furnace. So if you are getting no DC miro amp reading back when the meter is in series with the flame sensor and the flame sensor has 110 volts, it is probably a bad board as it was in my case.
I’ve dealt with this on a Lennox Elite. E270- no flame current sensed. Did everything. Replaced the control board. Worked like new. Here I’am again 2yrs later with the same Code.
Deal with one 2 days ago on a new ML296UH110XV60C and same issue as Stewart
Thank you.
Awesome simulation.
7op
is this part of the online training course??
very educative. thank you. regards
Hi , my Nordyne furnace had flame sensor problem, yellow light is on . I bought a new flame sensor, replaced and the furnace was working but the yellow light still on. Can you let me know how to resolve? Thank you.
how about cleaning the flame sensor first?
Would it also cut power to the control board (wifi thermostat shuts off too)? My burners turn off 3 - 4 minutes into the heat cycle then turn back on and continue until temp has reached.
I keep getting stuck at the broom step, what am I supposed to do?
Consider an option to clean the sensor.
Lol
Yeah I didn't want to unscrew it and sand it like another video suggested, so I just wiped the sensor off with alcohol on a paper towel. Very little visible residue on the paper towel, but it worked!
My Flame Sensor connection wire terminate at a White AC common wire. Meaning it has some sort of fixture that rapes around the white common and I can only assume it penetrate the white plastic to make contact. This white wire goes back to common on the IFC. Does this description seem normal? I have replace the Flame Sensor but still have zero microamps when testing. There the flame goes out after a few seconds.
RHH1095 same here
is this a program we can buy that covers all sorts of things us techs come across? If so where can I get it?
It's in the description.
👍🏼!!
my furnace keeps coming on but no heat. The burner is not working
james harris g5h
I
This is v hard to follow. Would be better to do this test on an actual furnace so we can see what is being done.
If you got flame at the Venturi you got problems
$155 dollars for a $9 thermocouple! Nice!
I am not an expert in HVAC but maybe that price includes the trip charge, labor to diagnose and install, taxes, etc. You can't expect the tech to work for free unless you believe in slavery. Also a thermocouple and a flame sensor not the same thing. They may do the same job but the operating principles are different.
Absolutely I agree. But it does become excessive.
Shit that's cheap, at the places around here that'd b a 300 dollar call
That's everywhere: Cars, AC, plumbing, lawyers, doctors, dentists, restaurants, bars etc..
my furnace keeps coming on but no heat. The burner is not working