Electroblok on Hymer B584 Year 2000 not charging leisure battery from engine

[Deleted member 434]

Here is a link to the 99 manual

http://ourbumble.com/wp-content/uploads/2016/01/Electrobloc-EBL99K.pdf

I don't think there are any significant differences in respect of the battery connections or internal relay. The 29 is the replacement for the 99 which I believe they have now dropped.

Thanks for help. Problem was a faulty 50A fuse next to starter battery. Solved.

 

[Deleted member 434]

If everything else in the EBL is working, other than the linking relay, you might get away with fitting a new relay outside the box. What I am thinking is a normally open 70A relay with closing triggered by a D+ feed that would link the engine and leisure battery leads when the engine is running. Am I overlooking something important with this idea?

Thanks for help. Problem was a faulty 50A fuse next to starter battery. Solved.

 

[Deleted member 434]

I'm aware the circuit goes via the Electrobloc, what I don't understand is you say the fridge has power when switched to 12 volt and the engine is running but no charge to leisure batteries?
That suggests the D+ signal is being received by the Electrobloc and unless there is a break in the circuit to the leisure batteries they should be receiving a charge.
Have you tried measuring the voltage at the leisure batteries with engine running, if so does it increase with engine running or not?

Thanks for help. Problem was a faulty 50A fuse next to starter battery. Solved.

 

[Deleted member 434]

I'm aware the circuit goes via the Electrobloc, what I don't understand is you say the fridge has power when switched to 12 volt and the engine is running but no charge to leisure batteries?
That suggests the D+ signal is being received by the Electrobloc and unless there is a break in the circuit to the leisure batteries they should be receiving a charge.
Have you tried measuring the voltage at the leisure batteries with engine running, if so does it increase with engine running or not?

Thanks for help. Problem was a faulty 50A fuse next to starter battery. Solved.

 

[Deleted member 434]

When I had an EBL the charge arrived from the engine battery through a big wire on the back and went on to the leisure battery by another big wire on the back. When the D+ signal was received by the EBL an internal relay linked the two. If the two are not at the same voltage when the engine is running then either the D+ signal is suspect or the relay may have stopped working.
View attachment 51492View attachment 51493

Thanks for help. Problem was a faulty 50A fuse next to starter battery. Solved.

 

[Deleted member 434]

You can either get yours repaired or get an exchange unit. Much cheaper than buying a new one. I'm not certain if you can get your original one upgraded to the spec of a later model but it would be better.

Thanks for help. Problem was a faulty 50A fuse next to starter battery. Solved.

 

[Markd]

Was the problem a faulty 50A fuse?

 

[Deleted member 434]

Was the problem a faulty 50A fuse?

Yes. It was the 50A blade fuse near the starter battery. Thanks.