12v power issues (1 Viewer)

brose

Free Member
Aug 13, 2021
5
0
Funster No
83,406
MH
ci carrioca
hi i have an ci carrioca 2007 & the 12v power transformer to fuse box is not working but via the isolator the 240v is inc the control panel
any suggestions please, why i have this problem ?
 
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brose

Free Member
Aug 13, 2021
5
0
Funster No
83,406
MH
ci carrioca
everything is working on 240v but when you turn on 12v isolator no power

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brose

Free Member
Aug 13, 2021
5
0
Funster No
83,406
MH
ci carrioca
the control panel lights up but is searching for 12v
 
Dec 24, 2014
9,191
47,494
Hurstpierpoint. Mid Sussex.
Funster No
34,553
MH
Compass Navigator
Exp
Ever since lighting was by Calor gas.
What do you mean by 'isolator' and 'transformer'? A couple of photos might help.
Is your leisure battery charged up?
 
Jan 28, 2008
10,113
18,365
Dovercourt, Harwich, UK
Funster No
1,353
MH
Renalt burstner
Exp
7 years campers before that
I would think your 12v leisure battery is flat you may have to replace it if its been left flat for a while

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brose

Free Member
Aug 13, 2021
5
0
Funster No
83,406
MH
ci carrioca
it does not have a leisure battery it all comes from a transformer built into the motor home taken from the main battery
( factory item )
 
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brose

Free Member
Aug 13, 2021
5
0
Funster No
83,406
MH
ci carrioca
694 reg 2007 as to body not sure

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Jul 24, 2015
374
947
Ramsgate Kent
Funster No
37,263
MH
Fiat ducato c class
Exp
5 years
Is the leisure battery warm to touch?
Smell like eggs?
If so it's knackered and needs disconnecting asap .

If you put a multimeter across the leisure battery terminals and it reads over 12.5 v it's working fine if not on hook up .
Could also be a large fuse near leisure battery blown..
 
Jul 24, 2015
374
947
Ramsgate Kent
Funster No
37,263
MH
Fiat ducato c class
Exp
5 years
Not sure if it has a transformer... probably just a control unit..
Check all fuses and terminals are tight.
 
Apr 27, 2016
6,858
7,965
Manchester
Funster No
42,762
MH
A class Hymer
Exp
Since the 80s
it does not have a leisure battery it all comes from a transformer built into the motor home taken from the main battery
( factory item )
This sounds like an unusual arrangement, so you'll need to clarify it. When you say 'transformer' do you mean a box that takes a 240V AC mains input, and outputs about 12V DC (maybe 13.8V DC). This is usually called a Power Supply Unit (PSU). Are the 12V fuses in a separate fuse box?

If there's just a PSU and no leisure battery, the 12V items will only work when the 240V mains is connected. The 240V AC mains connection is usually called an Electric Hook Up (EHU).

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Apr 27, 2016
6,858
7,965
Manchester
Funster No
42,762
MH
A class Hymer
Exp
Since the 80s
brose, in case you haven't noticed, as a free member you only have 5 free posts, there's a subscribe link at the top of the page.
 

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