Thanks Tony.
Good to know the electric shower is most likely supplied from the mains. I'm not used to them (they're not common in NZ where I grew up) and UK plumbing seems to have some quirks we don't get at home. I mean our mains stopcock is on the first floor? That makes no sense to me...
Triton Ivory II 9.5kw I think at least 10 years old
On Monday at 7:00am the shower was not heating the water but I waited and at 8:50am was able to have a hot shower. This morning the water was still not heating at 9:00am, housemate said at 11:00am it was working again.
I unscrewed the...