Relay clicking

There's a relay under the sink that keeps clicking on and off, it clocks every 10 mins out so for about 10 clicks,
It's really loud and annoying, anyone got any idea what it does pls?
Mercedes Wiltshire 2013

If you have a Whale fresh water filling system (recently introduced at the age of your van) there is a float in the fresh water tank to shut the solenoid in the freshwater fill point when the tank is full. There is a relay between the float and the solenoid and, if the tank is full, it operates as you move about the van.

Peter Brown wrote:If you have a Whale fresh water filling system (recently introduced at the age of your van) there is a float in the fresh water tank to shut the solenoid in the freshwater fill point when the tank is full.  There is a relay between the float and the solenoid and, if the tank is full, it operates as you move about the van.

that makes sense as i just filled the water tank, and it ruddy clicks everytime i get in the van...
thanks for that

I had exactly the same problem. Drove me mad! it only happens when the tank is full so just run off a bit of water and problem is cured!