Thanks JM this is a perfect tutorial/ refresher and is one of the best on the Internet today, thank you for your time and knowledge in its production 💯💯💯👍👍👍 its just what I was looking for 👍
Hey Jersey Mike, I recently subscribed to your channel and I want want to thank you for your videos. You are very good at explaining things and I am learning a lot as I review your videos. Thank you!
It's always a good thing when you accidentally find your mentor on TH-cam who happens to live 3000 miles away. Your content, knowledge, demeanor, and delivery is 🔥!
Wow…excellent teacher, very valuable info thank you so much… finally someone who really explains clearly 💪👍🔥🔥🔥 Do you have one for heat pumps as detailed as this video?
Thank you. I have 2 vids going over HP wiring and sequences. Not exactly a diagnostics video, but will certainly help in diagnostics if you know the content. th-cam.com/video/_38t-RPiDwI/w-d-xo.html th-cam.com/video/gBJzVV7fm_M/w-d-xo.html
Thanks Mike great video. Hi Mike I cane across a furnace today at customers garage. This furnace had no control board at all. It had a limit switch. And gas valve had 4 electrical terminals attached to it. Do you Recall any furnace like that.
Yeah I've seen it before. The TH/TR terminal is just a jumper for power from the transformer, through the limit switch and to the thermostat. The TH/TR is not internally wired in the gas valve, so technically you could bypass it and just go from the transformer straight to the limit switch then to the thermostat and it'll still work. The TH terminal gets the 24v signal from the thermostat on a call for heat (R to W at the stat). TR is the common going back to the transformer common to complete the circuit. It's still a 2 wire activated gas valve like many others.
I had my furnace for 15 years and all of a sudden it quit. I put a new filter in and it started up and ran just fine. A week later it quit again and the code said possible filter. I took it out and it looked new replaced it anyway and the furnace ran fine for a couple weeks and quit. What i figured out was if you tapped the old filter on the concrete white flakes would fall off like snow. Found out my wife had started using a new humidifier and after we shut it off the problem went away.
Mike, is the pressure switch being monitored the whole time the furnace is running or only at the initial check when the inducer first turns on? In other words, is it possible for the vacuum check to pass, and then 5 minutes in the pressure switch can briefly open, would that stop the cycle after the furnace has already started?
Yeah I've seen that happen for quite a few different reasons, from a bad pressure switch on a new unit, to flue obstructions, to bad pitch on 90% flue pipe and even temperature drops outdoors creating denser air and starving the unit. Normally I don't monitor the whole time unless I suspect issues with it. I'll hook up a manometer and keep an eye on it.
@@JerseyMikeHVAC I was asking if the BOARD monitors the pressure switch constantly. If the ptessure switch opens at any time, with the furnace running 2 minutes or 47 minutes, will the system shut off instantly? I always assumed the vacuum check was only one time at the beginning to prove the draft for startup.
@@realSamAndrew I don't believe the board monitors the pressure switch directly, but it does monitor the burner circuit and the switch is part of that.
Coincidentally yesterday one of my units decide to crap the bed. Severe cold snap with snow/ice soon to happen. Package unit(Trane) so harder to work on it in the outside bad weather. My unit was coming on but the registers inside didn't seem to be getting very warm. After running for quite a while the blower would shut down but my thermostat(Nest) was still indicating a Heat Call(glowing orange) I went outside and pulled the access panel. What I notice happening is the Inducer motor comes on and shortly after the burners(only 2 of them) light. Somewhere in that sequence the blower motor starts. The burners remain lit for 10-15 seconds. Maybe too long for a flame sensor issue? I might pull it and clean again. The cycles again and again until some point the system turns off. I have Green and Red LEDs on the board. Only Green light is indicating but according to diagram operation is normal. Red LED does not light indicating any other issue. I pulled the flame sensor and cleaned it with emery cloth and reinstalled it but didn't make a difference in operation. So I'm kinda stuck getting anyone here to work on it due to outside weather. My son is in the business but he lives a few miles out of town and roads bad.
That's another way to confirm power, but that only works when the fan actually comes on. If it doesn't, you can think you don't have power when you do and it doesn't tell you if it's a high voltage or low voltage problem, a thermostat or furnace problem, a breaker or fuse problem, a capacitor problem, etc.
Thanks JM this is a perfect tutorial/ refresher and is one of the best on the Internet today, thank you for your time and knowledge in its production 💯💯💯👍👍👍 its just what I was looking for 👍
Thank you, brother. I appreciate that.
+1
I’m the kind of guy that asks, “but what if this doesn’t work and why not?” You answered every question I had in my head while watching.
Perfect!
This is one of the best video’s for an old electrician, that never worked on many furnaces. Eliminate all before calling for help. Thank You
You're welcome.
As a new tech, this video is extremely informative. Much obliged, sir!
Glad it was helpful!
One of the best videos for sure. Excellent Teacher
Hey Jersey Mike, I recently subscribed to your channel and I want want to thank you for your videos. You are very good at explaining things and I am learning a lot as I review your videos. Thank you!
Thanks and welcome aboard! If you ever have any questions just reach out.
Mike, I like how you always explain things simple n detail. Thnks
Very welcome
I was looking for videos on furnaces and came across Mike videos and WOW what a guy excellent videos I subscribe and love all the videos God Bless
One on the best videos I have ever seen - thank you!!!
You're welcome
It's always a good thing when you accidentally find your mentor on TH-cam who happens to live 3000 miles away.
Your content, knowledge, demeanor, and delivery is 🔥!
Thank you!
I’m an hvac tech and I love all your videos Ive seen so far, do you have a tutorial like this video for electric heat sir??
Thank you. I do have a heat strip video here: th-cam.com/video/e0no4SeDOgU/w-d-xo.html
Great video, i wish i had this when I first started.
EXCELLENT TUTORIAL! YOU ARE GOOD. YOUR SPEECH, FLOW AND CLARITY WAS ON POINT.
Thanks
Thank you for making this video 👍
I'm about to go back to hvac school soon
Good luck!
I just started to watch your TH-cam videos, wow where you been at all this time?
Thanks for sharing! Very useful information!
My pleasure!
Excellent Video. Nice Job.
I'm a landlord with many units this helped..... Usually for me it's flame sensor or plugged nipple on the inducer motor.
Thank you very much this is very instructive .
You're welcome.
Nice video Mike. Thank you for the knowledge.
You're welcome
Great video Mike really appreciate your time to put all furnace sequence operations
My pleasure.
Great video! Currently out for a bit due to bday celebrations, can’t wait to get back into the field and get after it especially w this!
As always good learning content in your vids.. Thank you for taking the time to put this great wealth of knowledge together 👍
My pleasure!
Awesome explanation Mike thanks.👌🙏
Very welcome
Awesome basics video. Thank you.
Good timing, at least I know what the heck I’m looking at.
Brilliant. This is valuable information
Thank you
Excellent tutorial. Good teacher….
Thanks JM for sharing your knowledge , much appreciated
Any time
Great video 👍👍👍
Thank you
Nice job. Good video man
Thank you
Another great tutorial. You are saving people money and more importantly, you are educating us.
Glad to help.
Well done.
Thanks
Thank you too!
Very nice video
Wow…excellent teacher, very valuable info thank you so much… finally someone who really explains clearly 💪👍🔥🔥🔥 Do you have one for heat pumps as detailed as this video?
Thank you.
I have 2 vids going over HP wiring and sequences. Not exactly a diagnostics video, but will certainly help in diagnostics if you know the content.
th-cam.com/video/_38t-RPiDwI/w-d-xo.html
th-cam.com/video/gBJzVV7fm_M/w-d-xo.html
VERY CLEAR...AWESOME VIDEO...
Thank you
Thanks Jersey
No problem.
Thank you.
You're welcome!
Thanks Mike!
Just watch this video again and again
Dude you cooking thanks guy
Any time
this is awesome, thank you.
You're very welcome!
I graduated because of you..😂😂 thanks
So I get a cut of all future commissions, right? Lol. Jk. Nice job.
@JerseyMikeHVAC as soon as I receive my mechanical license, we can discuss!!
Thanks Mike great video.
Hi Mike I cane across a furnace today at customers garage. This furnace had no control board at all. It had a limit switch. And gas valve had 4 electrical terminals attached to it. Do you Recall any furnace like that.
Yeah I've seen it before. The TH/TR terminal is just a jumper for power from the transformer, through the limit switch and to the thermostat. The TH/TR is not internally wired in the gas valve, so technically you could bypass it and just go from the transformer straight to the limit switch then to the thermostat and it'll still work.
The TH terminal gets the 24v signal from the thermostat on a call for heat (R to W at the stat). TR is the common going back to the transformer common to complete the circuit.
It's still a 2 wire activated gas valve like many others.
Oh yea a like and subscribe for you. I like your style man.
Thank you!
I had my furnace for 15 years and all of a sudden it quit. I put a new filter in and it started up and ran just fine. A week later it quit again and the code said possible filter. I took it out and it looked new replaced it anyway and the furnace ran fine for a couple weeks and quit. What i figured out was if you tapped the old filter on the concrete white flakes would fall off like snow. Found out my wife had started using a new humidifier and after we shut it off the problem went away.
Mike, is the pressure switch being monitored the whole time the furnace is running or only at the initial check when the inducer first turns on? In other words, is it possible for the vacuum check to pass, and then 5 minutes in the pressure switch can briefly open, would that stop the cycle after the furnace has already started?
Yeah I've seen that happen for quite a few different reasons, from a bad pressure switch on a new unit, to flue obstructions, to bad pitch on 90% flue pipe and even temperature drops outdoors creating denser air and starving the unit.
Normally I don't monitor the whole time unless I suspect issues with it. I'll hook up a manometer and keep an eye on it.
@@JerseyMikeHVAC I was asking if the BOARD monitors the pressure switch constantly. If the ptessure switch opens at any time, with the furnace running 2 minutes or 47 minutes, will the system shut off instantly? I always assumed the vacuum check was only one time at the beginning to prove the draft for startup.
@@realSamAndrew I don't believe the board monitors the pressure switch directly, but it does monitor the burner circuit and the switch is part of that.
Coincidentally yesterday one of my units decide to crap the bed. Severe cold snap with snow/ice soon to happen. Package unit(Trane) so harder to work on it in the outside bad weather. My unit was coming on but the registers inside didn't seem to be getting very warm. After running for quite a while the blower would shut down but my thermostat(Nest) was still indicating a Heat Call(glowing orange)
I went outside and pulled the access panel. What I notice happening is the Inducer motor comes on and shortly after the burners(only 2 of them) light. Somewhere in that sequence the blower motor starts. The burners remain lit for 10-15 seconds. Maybe too long for a flame sensor issue? I might pull it and clean again. The cycles again and again until some point the system turns off. I have Green and Red LEDs on the board. Only Green light is indicating but according to diagram operation is normal. Red LED does not light indicating any other issue.
I pulled the flame sensor and cleaned it with emery cloth and reinstalled it but didn't make a difference in operation. So I'm kinda stuck getting anyone here to work on it due to outside weather. My son is in the business but he lives a few miles out of town and roads bad.
@@JerseyMikeHVAC 2008
Sounds like a rollout switch or high limit tripping.
@my-yt-inputs2580 you can test the flame sensor by connecting a simple rigid copper wire inline with the flame circuit.
@@realSamAndrew Those are my next 2 choices.
@@my-yt-inputs2580 would you please come back and tell us what it was when you get it fixed?
thanks for the good sandwiches.
You want fries with that? 😁
Just turn thermostat to fan on to see if you have power.
That's another way to confirm power, but that only works when the fan actually comes on. If it doesn't, you can think you don't have power when you do and it doesn't tell you if it's a high voltage or low voltage problem, a thermostat or furnace problem, a breaker or fuse problem, a capacitor problem, etc.
I thought if the switch is closed you should be reading 0 volts and when open it should be 24 v
Click, whirr, buzz, woosh
Hopefully no boom.