Re: hotpoint aquarius 1100 wm 63
The water inlet relays ❓ are actually inlet valves, they are very unlikely to be at fault. If you have a leak then that is the first thing to be checked out, the door seal is a common cause, it can then leak into the door lock, onto the heater etc, all of which will trip the rcd.
A complete check of all components with a suitable meter for earth leaks and a visual check for leaks is the only way to go.
Please be sure to remove the plug before you have a look.
Jim.