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Avondale Rialto 550/4


vic55b
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Caravan new july 2002, we bought it September 2004

 

With the caravan electric master switch on and the connections made to the

towing vehicle the two changeover relays (below the front bed) chatter, this stops as soon as the vehicle is started and there is a 12v supply charging the battery.

 

So far this has beaten the experts, the relays where replaced and no difference.

 

After being on site and the mains hookup has fully charged the van battery, then

there is no chatter.

 

The master switch is not easily accessed to be able to switch off every time, this

process is what the relays are supposed to do.

 

The van is kept in storage so a permanent supply is not possible.

 

Anyone have this problem and found a cure.

 

 

Thanks for your time.

 

:huh:

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shouldn't there be more than 12v charging the battery?

 

Test the voltage at the socket on the car. it should be over 12v or the charging relays could be clicking in an out.

 

IIRC my car has about 14V at the charging pin on the car's socket.

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Caravan new july 2002, we bought it September 2004

 

With the caravan electric master switch on and the connections made to the

towing vehicle the two changeover relays (below the front bed) chatter, this stops as soon as the vehicle is started and there is a 12v supply charging the battery.

 

So far this has beaten the experts, the relays where replaced and no difference.

 

After being on site and the mains hookup has fully charged the van battery, then

there is no chatter.

 

The master switch is not easily accessed to be able to switch off every time, this

process is what the relays are supposed to do.

 

The van is kept in storage so a permanent supply is not possible.

 

Anyone have this problem and found a cure.

Thanks for your time.

 

:huh:

677[/snapback]

Hi

from the discription you seem to have a prob with low voltage as per the other posting or a comman fault is poor earthing or earth burnout at the tow bar socket

 

Please read the following links which ref to earth burn out related to battery charging via the car. and electrical 12 volt feed to the fridge.

the comments recommend useing a 2 pin earth system .

N & S sockets / relays http://www. towitall. co. uk/trailer_wiring/instructions. htm

N & S sockets

http://www. oakwood-village. co. uk/MerchantM. ..1,86,97,104,108

 

Testing 7 pin sockets "N" & "S"

http://www. caravanningnow. co. uk/caravanning/faq12s12n. htm

 

7 pin burn out Info http://www. towitall. co. uk/faq/faq1. htm

Sockets "N" & "S" http://www. stowford. co. uk/faultfinder/index2. asp

 

Wiring Diagrams http://www. towitall. co. uk/trailer_wiring/instructions. htm

 

2 nd Battery charging in boot of the Car http://www. caravanningnow. co. uk/caravanning/faqbattery. htm

 

Battery and charging in van http://www. stowford. co. uk/faultfinder/index2. asp

 

Dave

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shouldn't there be more than 12v charging the battery?

 

Test the voltage at the socket on the car. it should be over 12v or the charging relays could be clicking in an out.

 

IIRC my car has about 14V at the charging pin on the car's socket.

1569[/snapback]

 

Thanks for the reply Argente_Owner, but the relays chatter when the vehicle is first connected without the vehicle supplying a charge, as soon as the vehicle supplies a charge

the relay chatter stops.

 

It's this point that beats the experts (Avondale Dealer).

 

vic55b

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Hi

from the discription  you seem to  have a prob with low voltage as per the other posting or a comman fault is poor earthing or earth burnout at the tow bar socket

 

Please read the following links which ref to earth burn out related to battery charging via the car. and electrical 12 volt feed to the fridge.

the comments recommend  useing a 2 pin earth system .

N & S sockets  /  relays http://www. towitall. co. uk/trailer_wiring/instructions. htm

N & S sockets

http://www. oakwood-village. co. uk/MerchantM. ..1,86,97,104,108

 

Testing 7 pin sockets  "N"  & "S"

http://www. caravanningnow. co. uk/caravanning/faq12s12n. htm

 

7 pin burn out Info http://www. towitall. co. uk/faq/faq1. htm

Sockets "N" & "S" http://www. stowford. co. uk/faultfinder/index2. asp

 

Wiring Diagrams http://www. towitall. co. uk/trailer_wiring/instructions. htm

 

2 nd Battery charging in boot of the Car http://www. caravanningnow. co. uk/caravanning/faqbattery. htm

 

Battery and charging in van  http://www. stowford. co. uk/faultfinder/index2. asp

 

Dave

1641[/snapback]

 

 

Thank you for such an extensive reply, it will take a while to wade through this, so I will get back to you later.

 

Vicc55b

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This could be totally "wide of the mark".

Are there not normally 2 X 12 volt supplies from the "S" socket on the car?  1 is continuous and the other only live with the engine running.

Since 1997??? the wiring was changed so that the switch from caravan battery to car battery was effected by inserting the plugs into the car.

I believe that the permanently live pin is used for this as it allows the caravan internal light to be used from the car battery without the car engine running. If the other 12 volt pin is used the change over would not occur until the engine is running.

Try a test by connecting the caravan to the car without starting the engine then turning on the caravan internal lights. ....do the work:

1) not at all?

2) flickering in time with relay chatter?

3) normally?

 

Now start the engine and try the test again.

 

The above could be totally rubbish, but worth a try!

2036[/snapback]

 

 

Hi,

Appreciate the reply, no reasoned thought is ever rubbish, it's another avenue to explore.

I'll carry out the checks at the weekend and get back to you.

 

With all this help from yourself and others I may be able to find the cause and beat the experts at their own game. ..

 

Vic

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  • 1 month later...
Vic,

Have you solved your problem, if so what fixed it?

4885[/snapback]

 

Sorry for the delay in updating, but events happened and had to be resolved first.

Yes it's fixed, it proved to be a slippery little devil to find, after trying all suggestions I had to go back to the experts.

 

Even trying a different tow car it still showed the same problem, now logic should say OK it's the van but!

 

It turned out to be a perfectly serviceable relay in the car towbar wiring, the relay had developed a fault that had no effect on nearly all vans.

 

What happens normally, is the grey plug when inserted picks up a single 12v supply and thats all until the engine starts and supplies additional feeds to charge the battery and run the fridge.

 

What was happening was as the grey plug was inserted the normal 12v was there and for a very brief instant a 12v feed was applied to the other two circuits, this set the van relays off chattering. Sound dodgy! well changing the relay for a new and different type stopped all problems.

 

The second tow car had a similar problem that had no effect what so ever on their rig. .

 

Thank you, to all who helped and those curious enough to view.

 

So experts 1 amateurs 0

 

Vic

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