[Archived]

My totally amateur guess: Originally I thought something overheated and burned in the electrical circuit. But then I looked harder, and it looks like corrosion caused from a circuit, almost like corrosion on a battery, which built up and got covered in grease.

Probably way off base, but a free membership is hard to pass up!

[Andre]

Vanner Monitor.

[Fred F.]

A

A real MESS

[Dick]

Yea, Vanner monitor. I remember reading the reason for the recall was the sealing clear resin protecting components. visable on the back side can under certain conditions start on fire.

And I qualify as a non professioal, don’t know anything, out of touch, old fart …..just ask our 21 year old son who knows everything.

[Chas]

Tom is the winner, it “was” the Vanner Battery Monitor. Even though founders, owners, administrators, employees, and contractors of the PC, its Forum and website probably should have also been ineligible.

The “event” also melted two air lines above the Monitor which needed to be fixed.

It sounds to me like these have had a problem in the past. The replacement I received from Inverter Service Center is model EM70D. I can only presume the one that destroyed itself was original to the 1998 Prevost chassis. Randy Seabolt from the Inverter Service Center express surprise that it melted down.

Check your Vanner Battery Monitor for the model number. If you have an older monitor that might be prone to destroying itself, my recommendation would be to consider upgrading a more current version. Someone might know which of the model numbers could be a problem.

I’m sure contributers like Jeff Rowe, Ben, Tom, or the Tradewinds folks might have more experience and thoughts to add. I don’t know if the Vanner company or the Inverter Service Center monitor social media like the PC.

One of the reasons we bought the bus was to take it racing. Preparing to leave for the last race of the season in 2014 we found one of the six month old chassis batteries was dead and the bus wouldn’t start. We were going to use for the first race of the season this weekend and now the meltdown. Good thing we hung onto the Suburban! Hopefully everything will work for the next trip.

[Kevin]

Dick the ones with lower letters like EM70A are old and have had problems the newer ones

like EM 70D have less problems

[Joe]

about your plans to take the Prevost racing. I have never seen a Prevost raced before.

But, I also must wonder about your statement that you had resorted to using the Suburban when the Prevost was not ready. Does that not give you an unfair weight advantage?

🙂

[Jerry]

Regardless of which version or model, there MUST be fuses put in the battery sense lines. Prevost generally puts these where the monitor reference lines are tapped off at the Vanner battery equalizer. Make sure this has been done or add them yourself. waterproof in-line ATC fuse holders with 3 or 5 amp fuses.

We have seen many that looked just like the post pic above. The really stink when you let the smoke out of them lol.

[Dick]

Jeff Rowe and Randy Seabolt from Interverter Service also said to fuse the lines. I was expecting to fuse the “battery sense” wires as you suggest, but when I received the new Vanner Battery Monitor (Sending Unit) and looked at the instructions, attached below, it looks like Vanner is suggesting to fuse the three outgoing wires to the indicator lights on the dash.

I couldn’t get a picture of the instructions to load. Here is a link:

http://www.vanner.com/manuals/EM70D.pdf

Now I’m confused about how this should be fused. Fuses on the incoming wires? Fuses on the outgoing wires? Fuses on all the wires?

[Archived]

The input wires should be fused at their source, not at the monitor. That way everything downstream from the source is protected.

The wires that send the signals to the tell-tale lights shoudl be fused at the monitor.

[Mike]

Six or seven fuses then.