rcd

Hi, I have just bought a 2008 coachman Amara. The owner showed it all working. The hot water was very hot. When I got it home when putting on the water heater the fuse keep tripping. I assumed I forgot to fill the tank before checking the water heater switch was off in my excitement to check...

Can anyone tell me what this 5A fuse is for? It's the missing one at the bottom, shown in the close up pic. Just checking the electrics on our 2006 burstner c530tk, which we bought during lockdown and have been doing up, and have found a problem. This 5a fuse was out, when we put it back the...