Gas Furnace Won't Turn On? Nothing Happening? 8 Reasons Why!
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- Опубликовано: 30 май 2024
- In this HVAC Training Video, I Show 8 Reasons Why a Gas Furnace Won't Start Up, Won't Come On! I Show the Troubleshooting Process Step by Step! Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #gasfurnace #reasons #furnace #stepbystep #operation #troubleshooting
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UPDATE:1 year and still cranks within the first 2-3 pulls. Probably will buy another when this one finally does bite the dust ruclips.net/user/postUgkx43QMbQqu67IZadu9ou8Sg1BdrunMRNqX . No issues at all. Very happy with it.UPDATE: After 6 months of use and over 70 uses I would still highly recommend this pressure washer. It does vibrate a decent amount but never had it “walk” like others have mentioned. No oil leaks, still seems to run like the day I bought it. Still cranks within 2-3 pulls every time. Very happy with my purchase!Have used it about a dozen times now. Plenty of power, cranks up on 1-2 pulls every time. My only complaint would be I wish it was a little taller to make it easier to walk with it (hits my ankles a lot) and that the two hose connections were a little further apart but it hasn’t caused me any issues. Seems to run a good 1-1/2-2 hrs on a full tank, overall a well built machine and definitely worth the money in my opinion.
My girlfriend's furnace wasn't getting any heat. Her inducer wasnt turning on. A volt meter showed it wasn't getting any power. Another (different) video told me it was the HSI, so i replaced it. But that didn't fix the issue. Another video told me it was the flame sensor. I changed that too, and that didn't do it either. A third video told me to change the motherboard as the inducer and HSI weren't getting power. So I bought a new motherboard and changed it, but that too didn't fix the issue. I came across your video and learned in step #5 that weak batteries in the wall controller could be the culprit. Her house has two controllers, one upstairs, one downstairs. The upstairs wall controller displayed working digits in the display. Even so, I opened it up and saw that the batteries were corroded . So I changed the batteries in the upstairs unit. But that still didn't fix the issue, even though I cleaned off the terminals as well. The downstairs wall controller had a functioning display also. However, when I changed the batteries in the downstairs wall controller, the heat came on! So lesson learned, sometimes it's the simplest thing. My batteries had enough juice to work the display, but we're too weak to run the heat. Luckily for me all the parts I had purchased over these last two weeks, including the motherboard were returnable as I got them all on Amazon. Thank you for posting this video and helping me troubleshoot her issue, it saved my girlfriend a grip of cash on a service call.
You’re the best HVAC instructor on RUclips.
You guys are awesome and very thorough. I’m a 5 year HVAC TECH, installer and maintenance guy and I’m still learning every day.
Thanks for watching!
I switched on the thermostat and immediately turned it off. That action killed my furnace. Thanks for showing the black smudge in the center of the blown fuse which helped me identify the problem. A quick trip to Autozone for a 3 amp blade fuse and now my furnace is back in business.
Thank you!! Within the first minute you provided the reason why my furnace was not turning on. I thought I'd have to call the company that installed it (which I dislike) and pay them for the visit. I appreciate this!!
You are a wonderful technician, I am retired license contractor and enjoyed watching HVAC videos. Still do some work here and there. Only have my right arm, but that doesn't keep me from doing my work. Thanks a million. God bless you.
I like your microwave magnet.
I changed the capacitor on my out side condenser fan , ac unit won't still start , thermostat Stat have battery,
This video just saved me a few thousand dollars!
I'm in HVAC and have experience but still watch your videos. They're very helpful to keep a refresher and keep you away from bad habits
I really want to thank you I am a 22-year-old I own my own house and it’s people like you who make that possible. My furnace wouldn’t light and thanks to this video I found out it was a bad transformer and repaired it!
One of the best videos of this type I've seen. It's good for both novices and experienced technicians alike .
Best HVAC Troubleshooting video I've seen in a long time...I'm here because my Rheem Furnace does nothing, the fan won't even come on when I turn it on at the Thermostat...You gave me a lot of things to Check...Thank You.
THANK YOUUU. I am not technically literate at all AND THIS helped me solve my issue without having to get my landlords involved and it saved them money! Thanks so much
Incredibly well illustrated, concise, and helpful. Greatly Appreciated Kind Sir!!
Thank you kindly!
@@acservicetechchannel and a horrible 8
Thank you so much! I've been watching videos all night and in the first 2 minutes you fixed my problem by telling me about the door switch! OMG! I almost slept all night in 8 degree weather. And your video was the only one that mentioned the gas switch, which was my original issue. But while troubleshooting, I left the door open. Thank you so much!!
Dont you hate it when it something easy like that . Its nice though
I have another reason for your list: I had a HVAC contractor who shall remain nameless install a new 90% condensing furnace and new central AC system in 2015. Worked great. In October 2018 it finally turned cold, and I switched my thermostat from "cool" to "heat." Could hear the blower come on, and the furnace's high voltage igniter cycling, but the main burner would not come on. Called HVAC contractor who installed, and with which I had a "priority customer" annual maintenance contract. Sorry, they couldn't send anyone to my house because my area was under wild fire "warning evacuation." So suffered through 5 days of no heat until evacuation warning was lifted. When tech finally arrived, took him about 3 minutes to discover that a slide switch behind the furnace cover that controls power to the solenoid that allows natural gas to flow to the burners was in the "off" position. I didn't even know such a switch existed. Apparently the tech who did my annual maintenance check earlier in the year for some reason left the slide switch in the "off" position. Got a profuse apology, and I expect that the tech who did the annual check up is still getting razzed about it.
Saved me a service call. Blown fuse. Thanks very much
Very good narration, precise with all necessary details to troubleshoot the problem!!
Thank you for that education that was straightforward I could totally understand what you were showing me and very thorough and simple. Well done!
Good troubleshooting Craig. As a master electrician, I have one tip though. Some naturally assume when they have a 0 volt reading that there is no "hot". It could also be a faulty neutral. At 8:02, you are checking the inducer fan supply by probing the hot terminal and the common neutral point. More accurate would be to check both the hot and the neutral right at the connector plug. This insures you have not lost your neutral between the common point and the connector plug.
C
Thanks for that info!
Excellent video, 5 amp fuse saved me a service call! Thanks for sharing your knowledge !
AMAZING video, thank you so much for taking the time to share your knowledge.
Thanks a lot I fix my ac because the fuse was burnt if I have to wait for my landlord to fix it will take weeks
Thank You! I did not close the cover properly when I changed my filter, your video gave me a solution. Thanks again!
Your videos are the best Craig. Thank you so much.
Very helpful. Professionally done. Great job.
I’ve watched most of your videos. They always have great, accurate content. Bought your book. Excellent reading. Well put together. I installed my own split ac system using your videos and book. Everything went smoothly. Thanks.
I’m oo
great vid...like your troubleshoot display set-up. so much easier troubleshooting the older equipment when there was just a fuse/breaker, simple thermostat, transformer, oil burner, or gas valve...so much for new technology...!!
To the point and you helped me solve the issue! Thank you!
I want that magnet!!!! Tape gets old. Btw… 23 year Hvac owner here. Very concise video. Great information.
Another problem you could have is a bad pressure switch or clogged air tube for the switch. Great explanation.
Sure, thanks!
Where is that p. S
You talking about the tube that measures negative pressure off the inducer motor? We call it combustion motor
But he is demonstrating why it won't turn on. The sequence of operation is another thing.
It’s coming into heating season and it heating video time and this is a great one. 🤘⚡️🤘
Thank you very much Nor-Cal! I appreciate it!!
Q
The only part I'm qualified to do is checking the batteries in the thermostat. It didn't help, but I'm making progress. Thanks for doing the video.
Ur the best u have not yet fell me. I have read your book and it’s everything a technician needs to know. Thank you once again for sharing your knowledge
Wow, thank you!
Thanks for the helpful video, replaced the fuse, works like a charm.
Excellent!
Thanks for video! Made me look like a hero to my little girls.
awesome!!!! i missed this one! thanks craig! knowledge is power.
Glad you liked it!
you are really nice .thank you so much
another great video. so happy i suscribed back when I first needed help. thanks for all your help and great videos.
Just wanted to thank you so much sir I really appreciate all the info 👍 really helped me out
Great Video, what about checking the resets on the the limit and roll out switches?
Great video brotha
Awesome VIDEO PRESENTATION!!!! THANK YOU FOR SHARING!.
Thanks for watching!
Thanks for all the great videos!
My pleasure!
Excellent analysis and explanation.
Thank you kindly!
Very easy to follow, thanks again
Glad it was helpful!
Thank you. You saved me a few hundred bucks!!!
nice video. great knowledge. thank you for sharing.
Thanks for watching!
Awesome job thank you so much
Great videos! Recently I replaced a broken secondary fuse on the furnace and a thermostat for my Bryant Heating and Cooling System, and the LED showed a solid red light. However, when I tried to run it two days ago, the LED turned off, but the new fuse on the furnace and the new battery-powered thermostat, as well as the breaker for the furnace are still all intact. Could you give me an educated guess as what could be wrong? Thank you!
Thanks sir.Great diagnostic help.
So nice of you
GREAT VIDEO
Great video, thanks!
Glad you liked it!
Great video my friend!
Thanks for the visit
Very good video
3:10 - No need to pull the fuse to check it: after verifying 24volts to the board, if you measure 0volts across the fuse, it is good: if you measure 24volts across the fuse, it is blown.
Very nice video. Thank you!
Many thanks!
Great job and video
Thanks Donnie!
Great explanation it will come in handy
Glad you think so!
Thanks! Saved me a technician fee 🙂
Very helpful, thank you very much!
Thank you for watching! I'm glad the video was helpful!
great vid thanks!
A most excellent video. Thanks.
Glad you liked it!
Excellent.
Thanks for listening
Wow yeah of course its really helpful thanks ,
Great Video. Have a nice weekend. Thank you for sharing ^_^
Thank you! You too!
Great video…..👍
Thamks.
Been troubleshooting my furnace for several hours 12/30/22 into 12/31/22. Took the doors off earlier today for an inspection - didn't know that there was a door switch that was preventing my furnace from turning back on. When I finally realized the main issue was that the furnace was not getting any power (checked the on/off power switch, checked the breaker) but it wasn't until I found and watched first 1:25 before my problem was solved. Held the Door Switch closed with my finger, and vuolla! After about a minute the furnace was back to running like before. Installed the door and my next step will be to invest in a magnet like you have to hold that puppy closed. Thank you sir! Very much appreciated!
Thanks for this Great video. 👏👏👏👏🙋♂️🇻🇪
Glad you enjoyed it!
Great video..
Thanks for the visit
outstanding!!
Carlos, thanks so much!!!
Should start with the batteries in the thermostat. That anyone can check and fix. Unfortunately it was the last and after I panicked not having a voltage meter trying to figure out what I was looking at based on your pictures it was just the batteries. Thank goodness for that and thank you for number five telling me to check them would've caused a lot less anxiety. Had it been number one problem. Especially since I had no idea thermostat even had batteries. 😂
Thank you so much, I followed your precise instructions and was able to figure out the fuse issue on the control board
You're welcome!
You are a The Man!!!!!
Glad you enjoyed it! Thank you for the support!!
I have an old Weatherking with a fasco inducer 7058-0049. Is it possible to replace just the motor? It has 3 bolts attaching it to the main part of the inducer so it seems logical but I couldn't find the motor online anywhere.
well explained
Thank you!!
I have a Goodman package unit that the brand new inducer motor fails to run. There is 240 volts at the L2 and black wire on the circuit board. When heat is called for the inducer motor will bump turn about 1/4 rotation then stop. What’s my next move in troubleshooting? Thanks for the videos and your time.
Thank you
Welcome!
Danke! My problem was fixed by replacing two 15 year old batteries I didn't even know about
Nice!!!
Thanks
Welcome
Got motor together furnace is in a cold room that what cools the gaps exhaust that comes out of the furnace is 76% volatile when the furnace that produces Heat sucks are the sewer line on the floor to stop making a positive and negative charge in the ions in the air which what allows the water to go out the tube instead of buildup in the combustion chamber
I had a tenant yesterday with no heat. Inducer fan ran, blower ran but the burner wouldnt ignite. I found a loose connection down at the blower. Im assuming a neutral. It was a small white wire wirenutted to a white larger wire coning off the blower
5:40
Reason #4
How to determine if the thermostat wires are touching or are Brocken ?
Resistance ? OL ?
Some furnaces the Inducer isn’t the first to cut on sometimes it’ll actually be the blower motor if the system has to pre purge
When turning on the heater on the thermostat, am I suppose to hear a clicking noise from one of the relays turning on? I am not hearing that on my control board.
My furnace stopped working and I checked everything (for days) until I realized the propane gas tank was empty😁
Can anyone help with cleaning instructions for an old locke stove co. warm morning model v-30 natural gas heater.
how can you tell which relay control what, again love all your videos
If you really wanted to know, you would need to follow the solder lines on the back of the board, thanks!
When I turned on my furnace on last night, for the first time since last Fall, it began to heat the house, then quit. When I went to check the thermostat, I could hear a series of clicks through the air return grate. I hear one click, then a pause, then two clicks in rapid succession, then a pause, then it repeats. Same thing after turning it off then back on. Same thing after it being off overnight. Does that symptom indicate any particular source of the failure??? Thanks in advance for any assistance.
im a DIYer and you did not mention the start up sequence for each component when the furnace start up and which components are NO or NC
Did you check the low frequency transmitter?
Great video and great explanations. Saved me...the door switch i never knew about and that was it! Thanks a lot
Glad it helped
thanks you you just save me sone money
Hello I have a question i have an older model ruud furnace i don't have sparkon the ignitor i can smelled the gas , can hear the inducer motor when starts looking for solutions any advice thanks
what lubricant using for fan bearing?
2:22
What if i dont see voltage at all
Do I have to switch the whole board? Or the wires?
2nd time in a month. Newer furnace and tstat. Why does this happen in the colder months? It quit on Christmas morning 2022 at 0300. Same thing today. It's 66 degrees in here and the tstat is set to 76. My dogs are happy but me not so much. Husband died in 2018 so it's been a struggle with something always. I can't catch a break. I'm looking for a new built home and I'm getting out of this doublewide.smh 2023 Michigan ugh..
My switch that should be closed has 2 wires connected that look like they were cut. Would that matter? I didn't notice them cut until a tech was here. Please answer? You show it at 1:24
What if ac or heat it’s not doing anything same steps?
thank you batteries in thermostat replaced now it is working
Glad it helped