Relay identity

[Brianmor]

I have a 2014 Autosleeper Broadway EK. When walking near the back of the van a relay keeps clicking. I've isolated the relay to a pair beneath the seat behind the battery with the wires disappearing into the cupboard where the Truma is. I've pulled the offending relay but all the Truma functions appear to operate normally.
Before I pull the cupboard to bits anyone any idea of what the relay might operate

 

[GeoffnDee]

Fridge and / or step , or could be for split charging the batteries. (starter / leisure) from the engine, when it is running.
You could also try pulling fuses one at a time until you locate what it operates if it stops clicking.

 

[Itsmcb]

As its a GB van it could also be the one that isolates the habitation electrics when the engine is running. Why not just replace the relay with a new one and see if it stops. It could be a faulty relay, they are only a couple of quid.

 

[Brianmor]

Thanks for the replies Gents, I'm at Newark for the next 3 days I'll have a good play then. I think the engine changeover could be a start as else seems to work.
I have tank heaters apparently but all the wires are quite small.
I'll let you know how I get on.
Geof we must be neighbours as I'm in East Wit

 

[Cush]

Is the relay clicking while on ehu?

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[Brianmor]

Yes, we had the water tank dropped to install a new shut off sensor when full a month ago and this started happening after I filled the tank 100% for the first time today. Not sure if that's a coincidence.

 

[Cush]

That’s sounds a bit more advanced than what I have. I wondered if it was to do with the onboard charger kicking in and out. I had a relay that clicked on my Bongo when the the charger was on to change between vehicle and pleasure batteries. just a thought.