Furnace wiring

[2017fr3]

Any tech types know where the furnace gets power from. I have wiring diagram for the furnace itself I just don’t have anything showing what or where it gets it’s power from.

[2017fr3]

The same fuse that runs the refrigerator also supply power to furnace. That fuse is good but there’s no 12 vdc at the furnace

[Bama Rambler]

Sounds like you have a broken wire between the fridge and furnace. It's probably not easily accessible, but I'd try tracing that wire. Hopefully it's broken at a location that's easy to get to.

[2017fr3]

I figured out the power problem. The circuit board is faulty. Is there an alternative to the suburban furnace for a class a mh? I have a 2017 fr3 32ds. Our local RV center said these circuit boards are not built to last. They keep them in stock. I have only had this coach less than a year.

[Keystoner]

Dinosauer electronics make high quality boards for rv furnaces and refridgerators.

[Bluepill]

Dinosaur Electronics Home. High quality circuit boards for RV appliances.

Available at Amazon.com

[MCCOY1998CARDINAL]

Originally Posted by 2017fr3

I figured out the power problem. The circuit board is faulty. Is there an alternative to the suburban furnace for a class a mh? I have a 2017 fr3 32ds. Our local RV center said these circuit boards are not built to last. They keep them in stock. I have only had this coach less than a year.

I just installed a Dinosaur product from Amazon. very reasonable in cost and feel good about it lasting. I hope you were able to resolve your problem.
I , too, am having annual problems w/ my Suburban SF-35. I can only find a chinese motor for the blower and they last ONE year.Period.
My plan is to have a local elect motor shop rebuild w/ American parts....The chinese parts and hassle of pulling furnace ain't working for me...Lol. Good Luck finding a replacement furnace. PKM

[CHICKDOE]

less than one year old and dealer has a replacement board in stock. shouldn't this be a warranty repair? even if the replacement board goes out you've postponed the expense of buying your own replacement.

[KyDan]

Another vote for a Dino board!
Fix it and forgetaboutit!

[Johnfort]

I replaced the board in my new Suburban furnace with a Dinosaur board before it crapped out. The factory unit is a similar board to the failing water heater board.