RV Furnace Diagnosis Leads To Motor Fault -- My RV Works

[@CartersTrail]

This was an awesome video. Thank you for considering your viewers and taking the extra time to walk us through the diagnosis. Since you can't be everywhere all of the time when you are needed, it's great to have these videos as a resource for basic troubleshooting.

[@MyRVWorks]

This is exactly why we do it. We love serving our RV community. ;)

[@honuppg]

Your video was a great help, and just like your video I have discovered that my motor is bad and needs to be replaced go figure. Sooooo. I am moving forward and watching your motor replacement video and hope to find a continuation video on this furnace. Thanks again, best furnace repair video I've watched yet.

[@markwilkins4275]

Thanks for the info u gave me enough confidence to try to make the repair myself

[@henrymorgan3982]

A great lesson in the way of thinking. Very smart. Very informative. Thank you!

[@jsteele42378]

I get so much out of watching your videos. I will soon be purchasing my first Class A motorhome. I have been watching several videos for some time trying to help me understand some problems that I could repair myself. Even if I do not wish to try and repair the problem understanding would help me understand the charge for repair. Thanks so much for sharing this information with me. I wish to see this beautiful land in my later years.

[@MyRVWorks]

Hi Jeff, we wish you all the best and hope you are able to as well!

[@part-timephilosopherLol]

love this video, I feel like I’m on the edge of my seat to know the outcome!!

[@drivebytourists]

I'm so glad I found your channel. You're the new big hit of my FB RV owners forum. I've turned you on to the group, and they all sing your praises! Thanks for this well put together, demystifying content!

[@ralph1142]

Very good Darren. Thank you for the troubleshooting sequence.

[@anthonyguenther6008]

Thanks for another great video

[@rvansteen1]

Thanks!

[@highcountryadv9828]

Great video darren- very informative. The few motor failures ive seen with these furnaces have been a lot more obvious- this was a good one. Thanks!

[@patrickstiltner1207]

Awesome video as always! Thank you so such!

[@MyRVWorks]

Thanks for watching! You are very welcome.

[@peterciarroni8920]

Great job 👍

[@laundrymanadams6105]

Great tips and video thanks sir

[@MyRVWorks]

You are welcome

[@jonphelan707]

Great video, very accurate and easy to understand! I have a question about the SF-30 motor. Does it use a PSC motor? I'm asking because I couldn't find a capacitor in mine. Also, the motor was replaced last year, but the new one, not even a year old, has failed. You mentioned considering a core replacement, which is a smart observation. This seems to be the recommended approach.

[@daviscrt]

Great information, thanks for sharing. Don

[@tschwag1420]

Thank you for sharing your knowledge

[@MyRVWorks]

You bet!

[@SuperWoodchips]

I just thought I’d share the experience I had with my rv furnace. Same thing , a call for heat resulted in nothing happening at the furnace . It turns out it was a stuck closed sail switch that wasn’t freeing up and returning to the open position after the previous cycle.

[@timf6916]

Good information

[@MyRVWorks]

Thank you.

[@jayt838]

I have used your videos to dianosis my furnance . Thanks for sharing your knowlaedge . I have a question , how offten do these fan motors good bad ? I've had many RV's in the past 22 years and , Just now mine has gone bad first time on an 8 year old trailer with very little use .

[@elimorfin1694]

Very good video

[@michelleharriman7342]

I love all your videos! How can I make sure none of my vents are clogged? My bedroom and bathroom are the furthest from my heater but it does not blow a lot of heat from them? Thank you

[@dereklane7125]

Thanks for the detailed info. I have a similar issue but when I send 12v straight to the motor it runs fine. Am I looking at a bad control board? I have 12v on the red power into the control board but nothing on the blower.

[@deanlockamy2087]

My furnace not working either, it has two blue wires one not connected to anything, but if I connect them together furnace comes on, since that leads me to believe the thermostat is bad I’ve replaced it and no joy there. Nice power stroke you got there.

[@AltonSanders-f7f]

Thanks for the video

[@pennyharn4958]

Hi Darren, I was a camp host at the beach RV park in PA and got to meet you in person and you are one of the nicest people I've met. I now run Island View in PA and refer our guests to you and your KZbin channel when they have issues with their rigs. Anyways, I have a question for you. I was wondering if my problem is similar to this video or something else. I turn on my furnace and it fires up right away. Once it reaches the temperature it turns off fine but then after the trailer cools down the furnace tries to ignite again and I just keep hearing clicking sounds coming from the ceiling plenum at the AC and takes several minutes for the furnace to start again unless I manually change the temperature on the thermostat by only 1 or 2 degrees and then it will start up right away like I just turned it on. Do you have a video for this issue to help me figure out what could be wrong or is this the correct video and I possibly need a new motor? Thanks a bunch for all your expertise that you share with people. I enjoy watching your videos.

[@PatsyGodsey-v9i]

I have a click up top and a click down bottom but nothing happens after that, Is this the " beep" you should be hearing ( the click down bottom? the connection).

[@skullcraftcustoms]

I'm an RV Tech and I've been working on a Suburban furnace for the last week I've determined that the board is bad and I have gone through four boards directly from the manufacturer in sealed boxes and every single board was bad

[@frankshiffer588]

Hey Darren, Frank,l and a longtime Patreon supporter to you. I encourage all who benefit to join Patreon and help make these videos possible. I did have a couple of fuzzies and hope you could provide a clearer understanding on that part of the video. When you had both blue wires at the furnace "pierced" by the meter probes, did you mean to leave them pierced and switch to continuity test with 12V on or off? If on, I heard to never use a tester on continuity on a live circuit? Or, were the two blue wires dead, and you were testing back to the relay up in the AC location for that continuity, and yet if that is the case? Wouldn't that mean the thermostat was off or calling for heat? See my confusion? What is a piercing probe for your tester? Are they those needle looking probe ends?

[@johnr5545]

Thanks god bless

[@n.g.1577]

Thank you very much for the video. Can someone please correct me if I'm wrong here: Is it safe to say that if the unit tries to ignite by going through normal process of trying 3 times (ignitor sparking) before the fan shuts-off after a few minutes, that at this point the culprit will have to be the gas-valve (solenoids) because if there's no gas flowing through valve then the board is not getting power to continue running? In other words, what makes the board shut itself off if there's no combustion? Is there a sensor somewhere that detects flame or is it the valve that ultimately makes this call? My sail-switch and limit-switch both tested good, and I'm getting 38+ ohms on both solenoids on 12VDC, .480A gas-valve, but unit won't fire up.

[@ericschweitzer2454]

Flames sensor needs to sense or everything shuts down

[@hillbillyrv]

Oh My !!!!! That is a fuzzy furnace.

[@edwardmiller9038]

I can't imagine why that furnace has any trouble, it only looked like chewbacca when you got to it. lol

[@philjohnson1028]

You mentioned a service catalog. Were do I aquire one.

[@MyRVWorks]

Hi Phil, we have catalogs with the vendors we use. They require a dealership account, and we usually order through NTP or Laurelhurst. If you are looking for a service manual, we have a manuals library on our website: myrvworks.com/manuals/. Thanks for watching!

[@luthercorliss]

I got a furnace that works every time on the bench,but when I install it ,it will work some time and most the time it will not replace fell switch and furnace board all new lines and regulator and thermostat,driving me crazy,please help

[@douggheen1653]

Great video. Question to anyone.... I found a blue wire behind my thermostat NOT connected to anything... The furnace works, the heat pump overhead works, but what is strange is that the furnace and heat pump come on at the same time? The blue wire has no voltage or ground. No continuity with any thermostat wires. Any ideas or recommendations?

[@redc8783]

You make it understandable about the events that take place when you flip a switch. Old job

[@JimZavorka]

What do I look for if I don’t have 12v on either blue?🤔

[@MyRVWorks]

One of your blue wires is piggybacked off of the 12 volt supplying the furnace. Make sure you use the furnace frame for ground and then probe the individual blue wires. If you do not get 12 volts on one of the blue wires and then check the furnace supply wire.

[@Don-ue3zl]

That furnace looked like a fire waiting to happen with all that dust and debris in and around it.

[@georgewheeler3731]

You didn't mention why 12v has to go thru the A/C unit, before going to the furnace? 12v should be wired directly to the furnace from the thermostat.

[@garygarcia6020]

Niaaaaaace

[@markwilkins4275]

Sorry for cheep tip but I'm a gypsy living on ss/ d

[@MyRVWorks]

Not at all! We appreciate your support!

[@curlyhum1276]

that RV looks like a twiker crash pad?

[@michaelladue5655]

Lol I cam hear your electric fence shouting out.

[@tedshantz6193]

thought u worked on rv's not pig pens

[@teamvav]

Damn this guy is hard to follow. I'm more confused by watching his videos then when I started. Then, with every video he puts out, I still don't see him actually fix anything?

[@markwilkins4275]

Thanks!