A/C and fuses 1997 Winnebago Adventurer WCG32WQ

[Trthomp2p]

I have a 1997 winnebago adventurer model WCG32WQ. The heater is not coming on. No blower or anything. AC works good. Thermostats have new fuses. It is a air v. I can not locate the fuses. Brakers are on. The only fuse box is under the dash. The manufacturer said ther is in the front right of the engine, there is not one there. Any ideas?

[Wakullabob]

Dash heater or house furnace ?

[Trthomp2p]

House

[Morich]

This sounds like it is likely to be a 12 volt DC problem.
what we expect on the furnace is that when we turn the thermostat up above room temp. the contacts on the thermostat close and send power to the furnace where the blower should start right away.
So one place to start is at the 12Volt DC breakers. This is NOT the breakers for 110 AC but it may beunder the same cover, just beside the 110, etc.
Co you know where that 12VDC panel is?
It will likely be where breakers for inside lights, vents, and those items are located.
I'm getting some conflict in what the drawings show to expect and what the owners manual seems to show, so you will have to do some looking to see if one or the other is right!
I would suggest starting at the breaker or fuse panel to check the breaker for the furnace.
The owners manual shows it on page 6-6 as this:
Click these snips to get a better view.

If you know where your converter or "load center" is, there may be a cover to flip down to find the DC fuses at right and one may be labeled furnace??


OR?
The drawings for 12VDC show it being a breaker.



These drawings are as viewed from the REAR, so we have to turn it around to locate the correct breaker. The correct one shows as first at right on bottom row but turned around to view from front, that will be first from LEFT on bottom row!
If you can find one or the other check the fuse is good or if a breaker, try flipping it fully off and then back fully on. They sometimes don't trip all the way and may hide if we only look at them!

See what that does, maybe?

Meanwhile do you have a users manual in a bgig case of info that should have been with the RV? We may need to check the power getting to the furnace itself.

[Ray,IN]

What is the make and model of your LP furnace? The RV appliance expert is Old-Biscuit over on irv2.com. Your sign-in credentials that work here also work there.

[Trthomp2p]

I have been convinced that the only fuse box is located underneath the dashboard. I have brakers over the microwave and below fridge.
I have looked everywhere for the fuse box. It's not in the engine, where the brakers are or the converter location. I have no heat in the house. That is no big deal.
How ever I have hot water in the water heater but nothing in the sink ot shower. There are to switch in the bathroom and one will get the water warm and it turns off cold and hot water.

There are switches on the side of the kitchen sink. One is red an the other is standard switches. Don't know what they are for.

1997 winnebago adventurer 32wq.

If you can make sense of this of this or any advice please..

[Morich]

I would have to ask why you think it is a fuse instead of a breaker?
Have you checked the breakers as I mentioned in post number 4?

[Trthomp2p]

Originally Posted by Morich

I would have to ask why you think it is a fuse instead of a breaker?
Have you checked the breakers as I mentioned in post number 4?

I should have mentioned this. We did check the braker.
There was one under the refrigerator, I turned them all off and back on just to make sure I got the right one. There is a push button over the microwave I checked that. The batterys are 100% and the converter is working.

[Morich]

Okay, since fuses and breakers are4 less likely to be the real problem, maybe moving on to check that it is getting to the furnace will be quicker!
I think this will be the correct manual but that has some guessing as there are times when furnaces get changed out. This is what the parts catalog shows for the OEM furnace but if it looks different, that is always possible on older RV.

https://manuals.heartlandowners.org/...11-05-2015.pdf

Lots of good info here to know but the big point I would start at is the 12VDC power getting to the furnace. You will need to open the cover oputside and find these two wires to check the voltage and it requires AT LEAST 9.5 volts.



While looking at them, also check they are not loose or corroded as that is one of the more frequent problems as they set so long when stored! If they are plug in type connections, try to wiggle them a bit to help scrape any corrosion off.

Page 26 will tell you what to expect in the order it has to work. If any step fails to do as shown, stop there and find that problem before trying to go further.

But then if that doesn't clear the problem, going down the troubleshooting chart on page 30 is wherer I would go next. I might skip down to where it says to check the 12VDC to the furnace.
RV furnace are not hard to fix but we need to go slow and check ourself to be sure we are not missing the real problem.

Good luck on the hunt!

[Bobn1957]

If the furnace is getting the power it might be the control board, there is a sail switch that shuts the burner off if there isn't enough airflow but it doesn't sound like that is the problem.