Elis & Hari's Grandad

Hello Guys. I have just started up our hot tub ready for the summer (we shut it off for the winter). It tripped out in the fuse switch so I opened the control panel up & noticed some water in the very bottom. There seems to be water coming up through the live & neutral connections. These are actually rusty so it must have been leaking for a while. Question is: easy fix - washer/gaskets or buy new?