Furnace Error Codes Explained

Furnace error diagnostic codes explained. If your furnace is blinking or flashing an error code and you are not sure what it means, this video is a great place to start. I go over the most common troubleshooting error codes a furnace may put out such as flame not sensed codes, pressure switch error code, ignition lockout, primary limit switch code, etc. No matter how many times it blinks (2,3,4,5 times..), this video will set you on the right path to figure out what the problem is and how to fix it.
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🕒 Time Table:

0:00 Furnace Error Codes Overview
1:49 Soft and Hard Lockouts Explained
3:03 Flame Not Sensed Error Codes
4:16 Ignition Failure Error Codes
5:15 Limit Switch or Flame Rollout Open
7:07 Pressure Switch Open Error Codes
8:31 Advice For When You Get Pulled Over
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👇 If you are seeing an error code that sounds like any of the following, refer to the videos below:

Low Flame Current
Low Flame Signal
Flame Signal Gone
Lost Flame Sense
Ignition Proving Failure
Ignition Lockout
Failed to Sense Flame
Flame Sensed When no flame should be present

Most Common Furnace Fix:
Flame Sensor Troubleshooting:
How To Clean Burners:
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Check Igniter
Ignition Failure
Burners Failed to Ignite
Lockout due to failed ignition
Hot surface ignitor sensed open

How to Check and Replace Ignitor:
How to Manually Light a Furnace:
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Limit Lockout or Flame Rollout Lockout
Limit Switch Open
Limit Circuit Open
Open High Limit Device
Main Limit Open
Primary Limit Switch Open

How to Replace Furnace Filter:
10 Reasons Why Furnace Overheats:
High Limit Switch Stuck Open:
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Pressure Switch Open
Pressure Switch Failed Closed
Pressure Switch Error
Pressure Switch Stuck Closed
Pressure Switch Stuck Open

10 Pressure Switch Problems and Fixes:
How to Troubleshoot Pressure Switch:
How to Bypass Pressure Switch:
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👍 Other Video Mentions:
Furnace Error Code Basics:
How a 2 Stage Furnace Works:

And For Many More Furnace Repair Videos, Visit My Furnace Playlist:
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⚠️ Disclaimer:
This video is for educational purposes. All appliance and HVAC repair work should be done by a trained professional. Word of Advice TV is not responsible for any possible damages or injuries caused by the use or misuse of the provided information.
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#furnaceerrorcode #furnaceerrorcodes #furnacediagnosticlight #furnaceblinkingcode

[WordofAdviceTV]

⭐ Other videos you may find helpful:

Top 5 Furnace Problems:
Furnace Sequence of Operation:
How to Read Furnace Wiring Diagram:

[outofabook]

I've watched a number of your videos and I continue to be impressed with your concise, easy to understand advice. One of the best repair channels on YouTube, for sure. Thank you!

[kevinrowe]

Well thanks to you and other techies I finally diagnosed the problem/s. Even though the igniter glowed brightly 🌞 the gas wasn't igniting so I originally said there was no gas flowing. But then another video suggested that if the burner/s were very dirty the gas wouldn't spray out well enough to light. But it could still probably light from a flame. So I did as suggested and used a barbecue lighter to good effect. 😀 I still have to clean the burners. They are a little tricky to take out as there are barely visible screws on the bottom. But I have heat and no service call bill to pay. 😉

[Encore-Entertainment]

Wow! Thanks! Wish everyone did such a great job on their channel like you have. You should win a you tube award!!

[eddymumford]

my go to guy... I like this guy he gets to the point with out all of the useless yaking. 😁 😎

[avaoh]

Genuine thank you from someone you just helped get their furnace working and start heating their house in the cold winter months, God Bless and good karma.

[saeedahmed]

Excellent presentation, fast and useful. Helped me greatly to address the issue without spending on technician.

[JP-psut]

Thanks you, I just fixed my furnace thanks to this information!

[damian]

i see almost all of your vids, awesome channel, thanks from argentina

[andreahughes]

My furnace wont kick on when I turn up the thermostat. So my thermostat could say its 73 degrees in my house and I turn it up to 75 or 76 and the furnace wont come on so I flip the breaker off and flip it back on and then the furnace comes on and it will run for a little while then it shuts off and it will come back on about 2 more times and then I have to go flip the breaker off and on again. I have changed the batteries in my thermostat, and I have bought a new breaker and changed the breaker, I switched off the breaker and then switched it back on. I haven't checked the filter yet. I'll do that in the morning. I'm sure it's the filter now from what you have said, as we've lived here in this house a year and a half and have never changed the filter and I don't really know how dirty the filter may have been when we moved into this home. Thank you so much!!!

[davidmckinney]

Hello my good buddy ✌️ Jay good to see you my friend. It's been a extremely hard time here trying to take care of bigfoot last Sunday he started urinating blood and luckily for me I have my vet personal cell phone number so I called her and told her everything going on and she said she was going to call in a prescription for cephalexin she said he probably has a UTI infection so I've had him on the antibiotics for almost a week now he isn't urinating blood anymore but he is not able to walk much he doesn't have the strength in his hind legs it's been very rough on me trying to carry him in and out but I don't mind just as long as I still have him that is the main thing just hoping and praying 🙏 for him to get better. your little boy is cute as a button take care of yourself and God bless you all my friends. Arnold say hello he is watching with me on the couch. Very good advice for the cops 👍👌✌️👊🤟🤛🤜.

[joedermody]

Glad I found you. Excellent helpful content. Kudos brother!

[esqforhire]

Thank you for your videos! I was able to diagnose and repair my furnace with your help (I had a bad inducer motor)

[trutrutru]

Thank you good sir ! The video and links are extra helpful. I saved my hard earned money with DIY.

[josegomez]

Excellent video keep posting
Thanks.

[CLAUDIA-kpj]

Very helpfull easy to understand thank you!

[terrywilliams]

your videos are excellent and informative.

[SingForHisGlory]

Thank you for sharing this information!! 🙌

[treynewawlins]

Thank you. My grandma has the pressure switch problem

[reytrevino]

Great videos and thanks for sharing your knowledge. Dealing with a carrier 58sta090 ignition lockout issue. Furnace turns off when it temperature drops to near freezing, usually overnight. Ignition turns on, but no flame. Flame sensor has been replaced. By midmorning, once I reset it, the furnace turns on and works all day, but at night the furnace going into lockout. Any recommendations. Thinking it might be a sticking gas value 🤔. Thank you in advance.