Furnace Help!

JAbraham03 · 03-24-2016, 05:57 PM

I have a 2016 Montana High Country 370BR. 3rd time out in it we started to hear a clicking sound. Went outside to track it down and ended up being the furnace blower surging. You could feel it pushing air out the exhaust. Went back in and turned off thermostat but noise wouldn't go away. Eventually pulled the fuse out of the box problem with this though is that it kills the power to the thermostat so can't turn the A/C on. Put fuse back in and clicking started after a couple minutes. Turned on furnace and clicking stopped and blower came on but no hot air coming from vents. Fairly cool air. Turned furnace off after several minutes and blower won't shut off now. Pulled fuse and re-installed and still have problem.

Could it be water that got behind the panel during rain? If so I would have thought they would have seen that at the dealership as the unit sits outside plugged in there. Other option would be a board or relay.

Thanks for all the help. Trying to not have to lug this back to the dealership to have work done.

John

Ken / Claudia · 03-24-2016, 07:23 PM

The control boards do fail, mine did in less than 1 year. BUT, why guess and spend hours of trying to fix it. You may be spending money on items that do not fix the problem. You may end up casing more damage and void the warranty. Since it does have a warranty, phone the service dept. tomorrow. I believe to fix the board you need to remove the whole unit and do some tests.

**chuckster57** · 03-24-2016, 07:48 PM

Depending on which furnace you have, we have had a rash of "crazy acting" units due to the control board being moved to the outermost portion of the assembly, and water leaking past the access plate seal.

If your furnace has the large rectangular cover, that is the brand we are having issues with. Blowing out the water has fixed them all.

It also required altering the furnace assembly so it would sit deeper in the housing, allowing the cover to seal

If it's under warranty. You might want to take it in. The board does have to come out to be tested.

Mutt · 03-25-2016, 10:28 AM

You outta gas?? If you run out of gas or don't have it turned on ..... the igniter will click trying to light the furnace. You might feel air coming out .... but it won't be hot.

JAbraham03 · 03-27-2016, 01:35 PM

I think it is definitely water related. It is the upright rectangular panel. It started after heavy Florida rain. Side of unit was like a water fall since the gutters can't handle the rain we get. Opened panel up next morning and water came flying out. Board was soaked. Dried over thing up and problem went away until ththe next day we got another heavy rain storm. The power connectors to the lower relay on the board sit on the very bottom of the board. I'm no master electrician but you would think common sense would say to not put that on the bottom of the board.

I ended up turning it off at the switch there. Which should also be inside so when it happens you don't have to go out in the poor in rain to turn it off. Pulling the fuse makes the main A/C not work as it runs through that thermostat. Although you would think this shouldn't be an issue in the first place. Will need to start carrying compressed air with me to help dry it out sooner. It is going to a repair center second week of April after our next trip to address fridge issues. Not sure if they can service the heater under warranty. I know they area domestic warranty center but not sure as I think the heater is Atwood?

Thanks

John

**chuckster57** · 03-27-2016, 02:27 PM

It is definitely an Atwood issue, not Keystone. The two we just fixed were Grand Designs. Since I'm not the tech that did the repairs, I can't say exactly what was done, but if you need me to, I can find out.

JAbraham03 · 03-27-2016, 04:57 PM

That would be awesome if you could. I am guessing it is something they will just install a thicker deal on though to keep water out.

Overall we love our unit so far. Just have this and the fridge issue to determine. Thanks for all the info.

John

**chuckster57** · 03-28-2016, 03:44 PM

BINGO. As I stated earlier into this thread, we are seeing the same issue in Grand Design RVs, only common factor is Atwood furnace.

dcg9381 · 03-28-2016, 04:15 PM

I just saw a similar post about Grand Design - the replacement was a "horizontal" vs a "vertical" design - they looked identical... So not sure what's really the issue.

**chuckster57** · 03-28-2016, 05:11 PM

Horizontal vs vertical: same unit, just installed on its side. Board is still subject to water getting past the seal.

Changing the orientation of the unit would require modifying the sidewall of the trailer, and I don't think Grand design would authorize the work needed to repair the vacuum bonded surface.

dcg9381 · 03-28-2016, 05:22 PM

The wrong unit was installed..

**chuckster57** · 03-28-2016, 05:29 PM

Can you provide a link? We are currently one of the top dealers in the US for Grand Design, and I haven't seen any models from them come with the wrong unit.

I have seen the exact same unit mounted both ways depending on the floor plan. I'm not aware of different units being used, and we sell every line they make.

dcg9381 · 03-30-2016, 11:37 AM

Quote:

Originally Posted by chuckster57

Can you provide a link? We are currently one of the top dealers in the US for Grand Design, and I haven't seen any models from them come with the wrong unit.

Here is what I read on it..

**chuckster57** · 03-30-2016, 12:03 PM

Okay. I read the thread. Here's what I gather:

The wrong unit was installed, and the replacement unit had a "V" in the model #. If you go to the Atwood RV furnace website, you can navigate to a page describing different models the V isn't a designation that the unit be placed vertical vs. horizontally, but rather how it's set for intake and discharge.

Some units sit on the floor and discharge into duct work, some sit on the floor and discharge out of ducts on the sides and some sit vertically and discharge through ducts.

Hope this helps clear up any confusion. There is only ONE furnace, but different "cases" they are put in to accommodate different delivery systems.

JAbraham03 · 04-20-2016, 09:14 AM

Just an update, got the unit back from the shop, they are still waiting on Keystone to give them an answer if they are going to send them a new board or not. They cant see how water is getting high enough to get to the board. I asked them about a thicker gasket but they said they want to wait on Keystone. I will be installing one if they come back with nothing can be done, only way water can get in where it did is if it is going around the gasket.

Anyone else have to do this?

1jeep · 04-26-2016, 06:11 AM

my carbon 327 has a similar furnace issue, turn the thermostat up, blower comes on nothing else. I go outside I can smell gas. unit is less than a year old, rv dealership said it is under warranty still and I am dropping it off this weekend. I just hope this doesn't turn into another 2 month wait for warranty work. I did look inside and see the board mounted on the top of the furnace so I dont know how it is getting wet easily.

My 9 year old outback had zero issues, my new keystone product has not been horrible but definitely not the same build quality they used to have.

JAbraham03 · 04-26-2016, 08:08 AM

Here are a photo of after I got some of the water cleaned up in the box after taking the cover off. The board is mounted on the bottom for some reason.

1jeep · 04-26-2016, 10:37 AM

looks like the same bd, but mine is up top, maybe the furnace is mounted differently in my rv?

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