Power tripped out Carthago (1 Viewer)

Apr 7, 2015
20
94
Horley, Surrey
Funster No
35,751
MH
A Class
Exp
Since 2015
Have blown the plug sockets in the van. Lights and fridge working on EHU but no sockets. All the fuses and breaker units seem to be OK.
But one breaker only works when the inverter is on, as do the plug sockets.
Any idea what the problem could be please?
 
May 7, 2016
7,190
11,614
West Sussex
Funster No
42,951
MH
Carthago Compactline
Exp
Since 2003
Try tuning the breakers off and back on. Sometimes they need to turned completely off to re engage the resetting mechanism.
 
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pauljanita
Apr 7, 2015
20
94
Horley, Surrey
Funster No
35,751
MH
A Class
Exp
Since 2015
Have tried that, still no luck. Also the control panel inside the van has now turned itself off completely?

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May 7, 2016
7,190
11,614
West Sussex
Funster No
42,951
MH
Carthago Compactline
Exp
Since 2003
I think CBE panels/DS units have a low voltage shut down. Have you checked your battery voltages?
 
May 7, 2016
7,190
11,614
West Sussex
Funster No
42,951
MH
Carthago Compactline
Exp
Since 2003
How are your mains supply and inverter separated? If the sockets are live with the inverter on but not with mains perhaps worth checking whatever device you have for keeping them separate.
 
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pauljanita
Apr 7, 2015
20
94
Horley, Surrey
Funster No
35,751
MH
A Class
Exp
Since 2015
Do you know where the inverter is? I’m looking all over the van but locate it.

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Lenny HB

LIFE MEMBER
Oct 18, 2007
52,708
147,672
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
Sounds like your system is set up to swap the power sockets over from the inverter to the mains input when on EHU. The relay is not switching over therefore the sockets are still connected to the inverter. Could be a loose connection, a faulty relay, the relay could be fused separately. Just a case of tracing the wiring and find out what is going on.
 
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Lenny HB

LIFE MEMBER
Oct 18, 2007
52,708
147,672
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
Where the inverter is - normally if fitted by someone with some brains it will be near the batteries to keep the 12v cable runs short, often in Carthagos in the double near the batteries.

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Apr 27, 2016
6,802
7,844
Manchester
Funster No
42,762
MH
A class Hymer
Exp
Since the 80s
Have blown the plug sockets in the van. Lights and fridge working on EHU but no sockets. All the fuses and breaker units seem to be OK.
Start at the beginning. Have you checked you are still getting mains power from the EHU supply socket? The lights and fridge could be working from the battery.

Has the system always worked well , but has suddenly developed a fault? Or are you doing something new and something has gone wrong?
 
Last edited:

Minxy

LIFE MEMBER
Aug 22, 2007
32,489
66,022
E Yorks
Funster No
149
MH
Carthago Compactline
Exp
Since 1996, had Elddis/Swift/Rapido/Rimor/Chausson MHs. Autocruise/Globecar PVCs/Compactline i-138
Where the inverter is - normally if fitted by someone with some brains it will be near the batteries to keep the 12v cable runs short, often in Carthagos in the double near the batteries.
By double you mean the large centre floor locker accessed internally?

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Apr 27, 2016
6,802
7,844
Manchester
Funster No
42,762
MH
A class Hymer
Exp
Since the 80s
I'd agree with Lenny HB that it's related to the changeover relay that switches from mains to inverter automatically. This relay will probably be located either inside the Consumer Unit (the box with all the mains fuses/breakers) or in a separate box just near it. Most electrical problems in devices subject to vibration and damp are loose/bad connections rather than failed components.
 

denisejoe

LIFE MEMBER
Aug 6, 2014
5,566
11,651
Warden isle of sheppy
Funster No
32,702
MH
A Class
Exp
Since 2004
Is your fridge and lights working on 12v or 240v as the light in the fridge is 12v and so are your lights unless you have 240v lights on the breaker there will be a master on off and some for each circuit check all

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Lenny HB

LIFE MEMBER
Oct 18, 2007
52,708
147,672
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
I'd agree with Lenny HB that it's related to the changeover relay that switches from mains to inverter automatically. This relay will probably be located either inside the Consumer Unit (the box with all the mains fuses/breakers) or in a separate box just near it. Most electrical problems in devices subject to vibration and damp are loose/bad connections rather than failed components.
Some inverters like the Waco have the relay built in.
 
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pauljanita
Apr 7, 2015
20
94
Horley, Surrey
Funster No
35,751
MH
A Class
Exp
Since 2015
Thanks for all your help. We have now managed to find the inverter under the floor and it has a reset button. The plug sockets are now all working correctly.

However, the control panel now works, but only if we remove the SOS fuse from the fuse box, pic below. But as soon as we replace the fuse, which hasn’t blown, the control panel does not work. It seems strange that by removing the fuse, the unit works! Any ideas what this fuse is for?

A885DE77-2E62-4E64-997E-802BB6CC8552.jpeg
336C192F-06D6-489D-9D38-137C7B236054.jpeg
53C3BFE7-5AF8-49B0-9619-6853BDE3D3DC.jpeg
 

Lenny HB

LIFE MEMBER
Oct 18, 2007
52,708
147,672
On the coast in West Sussex
Funster No
658
MH
Hymer B678 DL
Exp
Since 2008 & many years tugging
SOS fuse is a by-pass to power systems in an emergency, it's not supposed to be there in normal operation.

Info from CBE website:

Although CBE products are built to the highest quality standards, these components too might be sensitive, e.g. to electric shock or external disturbances. In the rare event of a failure to the control panel or distribution module, a drawback of modern systems is that more often than not almost nothing is working, not even basic users such as the heater, water pump and lights.
On the contrary, thanks to the DS470 built-in SOS function, end customers just need to insert a fuse in the fuse casing, to provide direct power for the heater, water pump and lights. This allows end customers to ensure that their vehicle will complete its journey before being brought in for servicing. In terms of accessories

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pauljanita
Apr 7, 2015
20
94
Horley, Surrey
Funster No
35,751
MH
A Class
Exp
Since 2015
Update....our control panel is now working. After discussions with Carthago in Germany, we realised that the 3amp fuse did not belong in the SOS slot! Now just waiting to get going over to France!

Thanks all for your input, it’s been very much appreciate.
 

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