Leisure electrics dead - and no wiring diagram

N

nigelord

Free Member
Joined
May 3, 2020
Posts
2
Likes collected
0
Funster No
70,319
MH
McLouis C Class
Exp
Since 2015
I've owned a LHD McLouis MH from new (2015) and was always rather surprised that it wasn't supplied with a full instruction manual, just a collection of rather badly translated booklets for the electrical units fitted - including Truma CP and NordEletettronica NE274 control panels and NE186 battery charger. There's nothing covering the wiring of the solar panel and certainly no overall wiring diagram.
Recently, the thing I've long been worried about has happened - a fault in the electrical system - and I haven't a clue where to look for the problem. It follows my fitting of a new starter battery after the original one kept losing its charge - and then discovering the leisure side of the installation had stopped working completely: none of the control panels are active and all the electrical circuits are down.
I have a decent knowledge of electrical/electronic systems, and if past experience is anything to go by, complete failure problems are usually the easiest to solve, but without a wiring diagram things get rather tricky. I would imagine McLouis MHs are wired much the same as other makes/models; if anyone could offer advice on where to look for the problem - or at least point me in the right direction - I'd be most obliged.
 
I don’t think any MH manufacturer supples a wiring diagram
 
not wishing to suggest or tell you to suck eggs, but have you started off with the basics, checking connections are tight, then moving onto fuses and isolation switches? might be worth spending a bit of time finding where the fuses and isolation switches are?
 
Your facts say "split charge" to me, since it connects both together. It will have a fuse. Have you looked close to Hab battery for a local fuse.

Though in this case I would expect the Hab side to come on if on hook up.

Subscribers  do not see these advertisements

 
Many thanks for the replies. To answer a couple of the points raised...

I didn't really expect a wiring diagram to be included (though a simple block diagram of the component parts would have been helpful). My main concern was that there wasn't even anything telling you where things like the fuse boxes are! And this, of course, relates to what is mentioned in a couple of the other posts. I've checked all the fuses that I know about - but this doesn't necessarily mean I've found them all (I've had a couple of cars in the past that 'helpfully' split the fuses up between different panels).

But Brian's point about a 'split charge' issue does sound promising as a line of investigation. Unfortunately, with the virus situation, I can't really move the MH to somewhere there's a hook-up to see what happens when connected to the mains.

One issue that I would welcome help with is how you get access to the leisure battery on a Ducato 250. As I mentioned, it's a LHD model, which means the battery is under the passenger seat. But try as I might I don't seem to be able to find the right bolts/screws to raise the seat to get access to it. Anyone got any tips?

Nigel
 
If you don't know how the electrics are put together, you could take a look at this web site. They do Nordelettronica items, including your NE274 panel. More to the point, they do complete kits which include your panel, and there's downloadable wiring diagrams and installation instructions.

Obviously they won't be identical to yours but will give you a good idea of the general layout and where to start looking for faults.
deltaconversions.com

Welcome to Delta Conversions - Home of Nordelettronica in the UK

Dedicated to the sale and distribution of new, spare & replacement parts for Nordelettronica.
deltaconversions.com deltaconversions.com
 
I think you have to remove the seat totally to get at the battery ? Beware too, the seats are mighty heavy, have a space cleared for it before you lift it.
 
I believe the starter battery is in a void under the passenger footwell, not the seat?
 
Have a look at the controller for a small reset button, about the size of a toothpick.

Subscribers  do not see these advertisements

 
Have a look at the fuses under the drivers seat, you can remove the trim from behind the seat, same goes for passenger seat
 
First line of attack..... It appears because of lockdown you haven't been out in the van?
If its been stood for the last 5 or 6 weeks chances are the hab battery is dead.
The battery will self discharge plus some bits and pieces such as the control panel still draw power.
Find the battery and stick a multimeter on it.
The seat doesn't 'tip' you have to remove it completely... Usually 2 bolts at the front of the base and 2 in the runners at the back, and it's heavy.
 
I think the first thing to check is whether the battery supply is reaching the distribution box. The wiring diagram shows a direct connection to both batteries, at three big terminals: Leisure battery (LB) positive, Van Battery (VB) positive, and common negative. If no supply, you can check the fuses/isolator switches, connections, flat battery etc. If supply is present, then you can concentrate on the distribution box.
 
First point is check charge of leisure battery not the engine battery if it’s flat nothing will work

Subscribers  do not see these advertisements

 
nigelord said:
I've owned a LHD McLouis MH from new (2015) and was always rather surprised that it wasn't supplied with a full instruction manual, just a collection of rather badly translated booklets for the electrical units fitted - including Truma CP and NordEletettronica NE274 control panels and NE186 battery charger. There's nothing covering the wiring of the solar panel and certainly no overall wiring diagram.
Recently, the thing I've long been worried about has happened - a fault in the electrical system - and I haven't a clue where to look for the problem. It follows my fitting of a new starter battery after the original one kept losing its charge - and then discovering the leisure side of the installation had stopped working completely: none of the control panels are active and all the electrical circuits are down.
I have a decent knowledge of electrical/electronic systems, and if past experience is anything to go by, complete failure problems are usually the easiest to solve, but without a wiring diagram things get rather tricky. I would imagine McLouis MHs are wired much the same as other makes/models; if anyone could offer advice on where to look for the problem - or at least point me in the right direction - I'd be most obliged.
Click to expand...
I know this was a long time ago, but did you get it sorted in the end? As my NE274 is dead too.
 
Peregrinator said:
I know this was a long time ago, but did you get it sorted in the end? As my NE274 is dead too.
Click to expand...
what is yor problem Peregrinator someone here will be able to help
does your cab battery work, is youru fuse located next to the hab abttery look ok.
is the control panel on, and is the 12v switch turned on
 
Tombola said:
what is yor problem Peregrinator someone here will be able to help
does your cab battery work, is youru fuse located next to the hab abttery look ok.
is the control panel on, and is the 12v switch turned on
Click to expand...
NE274 display panel shows nothing, many people seem to have had this problem when they removed or changed the battery, has I did, suspect a bug with display panel to reset, as it does have the facility to shut down when battery is low, need to know how to reset this damm thing.

Subscribers  do not see these advertisements

 
seven years old if its the original battery that would be my first port of call does anything work when on hook up?
 

Join us or log in to post a reply.

To join in you must be a member of MotorhomeFun

Join MotorhomeFun

Join us, it quick and easy!

Join us

Log in

Already a member? Log in here.

Latest journal entries

Back
Top