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No, not the box with the fuses and/or switches.

If there is a fault it is with the charger as it is now supplying the 12v power. 

Fridge, TV and heating are off the 230v mains, and you say they are ok.

Could you borrow a battery to try?  Even maybe just use your car one? 

 Sometimes having a battery fitted can "smooth out" the 12v.  If that does not help then it is a faulty charger.  It could be something loose as it is going on and off.  A new fitted charger is around £100 to buy, plus fitting.

Quote: Originally posted by Elaine54 on 19/9/2008

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Hello,
I have a 2001 Elddis avante and had no problems till last week, I hooked up the pump but no water was coming through the taps and the lights on my switch console were pulsing on and off, I then tried the lights and 2 were operating and the overhead lights were pulsing on and off!!! it was all quite bizarre. the fridge was working and tv, but no heating or water, I don't have a battery fitted as I am on hookup can anyone help please.

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Not suprised you have problems the battery is supposed to be connected ,the idea is that you have a battery as back up when 12 volt demand is high . With no battery in place you will be putting all the extra load on the charger/transformer i think they are about the £90 - £100 mark for a new unit but as previously stated you could try fitting a leisure battery to see if that cures the problem but i doubt it

Contrary to what some people will tell you a leisure is required it not just for when you are off EHU

Quote: Originally posted by michael on 20/9/2008

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..i read somewhere that this was always the case and to never use a mains hookup without a battery in place if 12v lighting is in the caravan ..<!-- Signature -->

some new caravans are produced without a battery or a place to put one.

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