Furnace Troubleshooting - Common Problems | Repair and Replace

In this episode of Repair and Replace, Vance shows how to troubleshoot some common problems in a gas furnace. Troubleshooting a furnace is best done by eliminating simple solutions first before replacing anything. If your furnace won't start, or keeps shutting off then, it could be locked out. If your furnace not working, here's what to do, step by step.

This furnace troubleshooting guide is applicable to all furnace brands including: Carrier, Emerson, York, Goodman, Honeywell, Lennox, Trane, Rheem, Bryant, Coleman, Westinghouse, White Rogers, Nordyne, Honeywell, Kenmore, Frigidaire, Amana

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00:00 Intro
00:41 Airflow
01:19 Simple Solutions
02:09 Safety Switches
02:51 Draft Inducer
04:04 Ignitor
04:36 Gas Valve
05:00 Flame Sensor
05:30 Flame Rollout Switch
06:22 Blower Motor
06:42 Limit Switch

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AMRE Supply provides homeowners, service contractors, and property management with the parts and knowledge needed to get the best performance out of any property. Stocking the largest selection of appliance parts, heating, plumbing, lighting, and janitorial supplies, AMRE ships almost anywhere in Canada within 24 - 48 hours. Expert help is available online, over the phone or in person at one of the many locations across Canada.

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[hazemtawfik]

Excellent and highly informative video which summarized natural gas heating system in a simple and easy way to understands. I am a mechanical engineer with extensive experience in natural gas burning systems and this video is one of the best I have seen about the subject. Thumb up to those who produced this video

[tmiles]

Hey thanks man! I cleaned the flame sensor and it fired right up for the first time in a month! Your a damn hero!!

[tycheesey]

This video saved me hundreds of dollars. Thank you!

[Verzula]

Thank you guys for creating this video! Flame sensor was dirty so cleaned it and now it's good. Chicago winters are horribke

[ELBlDu]

This video saved me from a service call. I accidentally turned the switch off yesterday. Went down to check it, and sure enought, furnace is back up and blowing warm heat. Thank you

[studiod]

Really great troubleshooting video. Excellent computer illustrations to help understand how the various troubleshooting parts do their job!!

[kamalnasari]

U are awesome for real . I am a mechanic almost 45 years, no more .
But I have a little knowledge . I am trying to follow your teaching master . Wish me good luck .X mass .it is so cold here .🥶🙏🙌✌󾓦✟✟✟
.

[ajlincoln]

Great and clear presentation. Please buy from these folks if you need parts as a way of giving back.

[nsideoutn]

Great video. Thank you.
I just got into HVAC and boss wants to make me the service guy. Your videos are perfect. 🙏

[rohmichael]

Wealth of knowledge you shared with your subscribers. Thanks 🙏

[JPeeet]

I knew literally nothing about gas furnaces and have been scratching my head as to why my house heats up to the set temp, but then never turns back on once the temp drops below the set temp.

Figured out after watching the vids it's most likely my limit switch. Was able to find and replace it and save myself a TON of money from having to call a professional. Thank you!

[elperron]

Great video, thank you! I have a Lennox that still will not light up. The code is off and slow flash- the cover says it's pressure switch or restricted exhaust vent. My inducer motor was getting very loud so I replaced the inducer motor and checked the flue for obstructions. Ran again for about three days after replacing the inducer motor and making sure there was no airflowrestrictions on the flue. I ordered and replaced the pressure switch even though the one there seemed to be fine after testing for resistance. Put on a new pressure switch and didn't want to turn on the ignitor, but then the ignitor turned on and a click coming from the gas valve released the gas and the burners fired up. Worked for about three days and now it's back to the same issue even after replacing the ignitor, checking continuity on the flame roll out sensors and the limit switch. Everything seems to check out after testing the pressure switch over and over, switch closes everytime the inducer motor turns on. I am alomst coming to a conclusion that the board is bad since it keeps giving me the code of a pressure switch, exhaust restriction even though the pressure switch is closed throughout the entire cycle before it shuts down. Do boards actually fail in this manner? Thank you again for this great video!

[aniawil]

Thank you so much for this video! I fixed my furnace thanks to you!!

[mikolishken]

Thank you very much. Went out and bought a new HSI thinking that was the problem..turned out it was just some gunk and a bit of water in the pressure sensor tubing. Blew it out with compressed air and I'm back up and running!

[osbaldogarcia]

Thank you so much for taking your time and share all this important information to us...I really appreciate

[jimzabawsky]

A million thanks! A clump of snow fell on my exhaust vent.

[stephencrawford]

Thanks a bunch for the video. You guys saved me a lot of time and trouble.

[Unknown-rnjc]

Thank you, you saved me $ and a cold family

[dronevisiontechnologies]

Good stuff exactly what I needed to get my furnace going again, much appreciated thanks!

[juansuazo]

Thank you so much I did exactly what you said and it worked...