ELECTROBLOC ON HYMER B 544 (1999 MODEL) (1 Viewer)

[Alisdair]

Good evening everyone,

I am brand new to this forum, and we have only owned our Hymer B544 since May 19. Up to that point, my DIY experience has been boat-related (not too dissimilar...but...)! We have had very few problems with the van, mostly related to inexperience, and I have to say that I am very impressed with the build quality and fit-out. The wiring is, as far as I can see, all original, and for a 20 year old van, in good shape. However, I have hit a real snag, based on my lack of knowledge of the van, and what I expected to see -so I am hoping that some more experienced hands can point me in the right direction.

Anyway, the problem started when I tried to replace the micro-switch in the kitchen tap. An easy enough, if slightly fiddly task.

During the soldering, something , somewhere, fused. Now a large chunk of the circuitry in this part of the can doesn't work! I have traced the switch wires to the pump, (attached to a really difficult to reach multiple connector under the sink. There is no 12v reaching this, whether I use blue or brown as a positive. Here is what I have tried:

• Running 12v to the water pump, so that I know that this is OK -it is.
• Checking the blade fuse next to the domestic battery - on this model under the passenger seat - both OK. (one controls the Main switch "Hauptschalter" above the rear door).
• Checking behind the Main Switch panel to see if there is a fuse elsewhere in the system - no joy.

Logic suggests that there must be a secondary switch panel or fuseboard somewhere in the van. But I am darned if I can find it! Reading this forum suggested that I should be looking for an "Eectrobloc" which I understand to be something akin to a master panel.

Before I dismantle more of our pride and joy in my search, can anyone please tell me where this might be (and, if a 1999 model B544 even has one fitted)?

All suggestions gratefully received...!

 

[Campervan_man]

Look under the front cab seats.
Always use a multi-meter as the colour of the 12V wires is different to UK.

 

[Hymerbell]

Good evening everyone,

I am brand new to this forum, and we have only owned our Hymer B544 since May 19. Up to that point, my DIY experience has been boat-related (not too dissimilar...but...)! We have had very few problems with the van, mostly related to inexperience, and I have to say that I am very impressed with the build quality and fit-out. The wiring is, as far as I can see, all original, and for a 20 year old van, in good shape. However, I have hit a real snag, based on my lack of knowledge of the van, and what I expected to see -so I am hoping that some more experienced hands can point me in the right direction.

Anyway, the problem started when I tried to replace the micro-switch in the kitchen tap. An easy enough, if slightly fiddly task.

During the soldering, something , somewhere, fused. Now a large chunk of the circuitry in this part of the can doesn't work! I have traced the switch wires to the pump, (attached to a really difficult to reach multiple connector under the sink. There is no 12v reaching this, whether I use blue or brown as a positive. Here is what I have tried:

• Running 12v to the water pump, so that I know that this is OK -it is.
• Checking the blade fuse next to the domestic battery - on this model under the passenger seat - both OK. (one controls the Main switch "Hauptschalter" above the rear door).
• Checking behind the Main Switch panel to see if there is a fuse elsewhere in the system - no joy.

Logic suggests that there must be a secondary switch panel or fuseboard somewhere in the van. But I am darned if I can find it! Reading this forum suggested that I should be looking for an "Eectrobloc" which I understand to be something akin to a master panel.

Before I dismantle more of our pride and joy in my search, can anyone please tell me where this might be (and, if a 1999 model B544 even has one fitted)?

All suggestions gratefully received...!

In the side panel lift up locker by the window....plus fuses in the lift up panel in the glove box...that’s the extent of my electrical knowledge....I expect Lenny HB will be along soon to tell you it’s the 15 ohm middle particle of the elector switch in the main Faraday subsection tri-nomial inverter...but don’t believe a word he says.

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[Lenny HB]

In your van the Elektroblock will probably be a EBL99.
This what it looks like.

Hymer put them in various places, under the drivers seat (LHD), in the double floor access via external locker door, often a wood panel in front so not obvious. By the sliding passenger window under the lid of the storage box beneath a sliding panel.
If you still can't find it there should be a 50 amp maxi blade fuse near the starter battery the heavy cable connected to it should go to the Elektroblock.

 

[Manic]

As Lenny HB says your EBL will be inside the cabinet above the gas locker, slide open front cover and lift false bottom out and you should find the EBL with a row of fuses.

 

[Alisdair]

Thank you for the quick replies -what a helpful bunch you are!

Lenny, I have identified 2 Blade fuses next to the domestic battery - I now realise where one of the cables probably goes to!

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[Alisdair]

Thank you for the quick replies -what a helpful bunch you are!

Lenny, I have identified 2 Blade fuses next to the domestic battery - I now realise where one of the cables probably goes to!

However, not in the gas locker - which is a single GRP moulding on the inside. I can't get the wagon onto a ramp for a while to trace any wiring underneath, so will keep looking. I am assuming that there must BE one - ie, that the vehicle isn't so old as not to have one?

 

[Figaro]

There will be an ELB99 but not in the gas locker. Sit in the cab seats and on one side under the side windows will be a cabinet, usually has a slide top, open this and look for a false bottom that lifts out and you should see it.
Side depending on whether it's left or right hand drive.
Welcome to the fun


Edit, you don't need to get it on a ramp to find it

 

[denisejoe]

On the RHD models the electoblok was next to the drivers right hand window under the lift up flap

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[Coolcats]

You can get English version of the EBL manual here https://www.schaudt.gmbh/de/service-support/downloads.php you just have to navigate the German menu

 

[Figaro]

This might help

 

[Alisdair]

Thanks Figaro and Denise for the very clear steer - and apologies for the delay in replying. "Work is the curse of the motorhoming man" -to misquote Oscar Wilde .

I have now found the EBL, replaced the fuse and restored some of the functionality. What I cannot figure out is the connections to the shower tap and toilet flush. It appears that there are two live feeds to the multiblock under the sink. One is a standard (but Blue = +ve!) feed, and I have used this to get the Sink tap, Fan, Fridge light and outside light working. So far so good.

The second wire has blue, black and brown strands and runs off under the WC compartment and into the wardrobe. This would appear to be the connection (and switch?) for the shower tap -but I seem to be missing a wire.

This has had me pulling my hair out....!

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[Lenny HB]

(but Blue = +ve!)

Blue +, brown -, standard Motorhome wiring.

The second wire has blue, black and brown strands and runs off under the WC compartment and into the wardrobe. This would appear to be the connection (and switch?) for the shower tap -but I seem to be missing a wire.

The tap only needs a live feed, in and out of the switch, the tap wires are normally brown (dont ask) and the wires connecting then often black & brown. Blue could be the live feed to the flush.
Motorhome wiring & colours are a law to themselves.

 

[denisejoe]

Thanks Figaro and Denise for the very clear steer - and apologies for the delay in replying. "Work is the curse of the motorhoming man" -to misquote Oscar Wilde .

I have now found the EBL, replaced the fuse and restored some of the functionality. What I cannot figure out is the connections to the shower tap and toilet flush. It appears that there are two live feeds to the multiblock under the sink. One is a standard (but Blue = +ve!) feed, and I have used this to get the Sink tap, Fan, Fridge light and outside light working. So far so good.

The second wire has blue, black and brown strands and runs off under the WC compartment and into the wardrobe. This would appear to be the connection (and switch?) for the shower tap -but I seem to be missing a wire.

This has had me pulling my hair out....!

Works of the same pump

 

[Alisdair]

Works of the same pump

Hi again. I guessed it must. However, is it separately switched?

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[Lenny HB]

Hi again. I guessed it must. However, is it separately switched?

The flush button operates the pump and a solenoid in the loo.

 

[denisejoe]

There is a fuse in the cassette compartment if I Remember rightly but had a beer or 3

 

[Lenny HB]

There is a fuse in the cassette compartment if I Remember rightly but had a beer or 3

Only sometimes if there is one not sure if it does anything if it hasn't got its own pump. I know there is no fuse in mine.

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[Alisdair]

Thanks both, I really appreciate it.

At the moment, I am fairly sure there is only one water pump (under RH Bunk/setee) , operated by 3 separate switches (Sink, WC, and Shower). Only the sink works.

The three wires (Brown, Black and Blue(live)) were all connected to the multiblock under the sink. However, I didn't see exactly how before I took them off ! (Beginner's error - however, as I couldn't get my head in there, I will let myself off with that one ) .

What I am trying to figure out is how 3 wires can operate 2 separate switches - and I am not a Leccy!

However, if there is another fuse in the circuit (for the WC system), this will eliminate one potential error. I will check!

 

[Alisdair]

Latest on this is, that there is a fuse in the WC compartment - it is in the toilet fan circuit (which works ). So no further forward, unfortunately!