Oh no!

What next?

Got up this morning to have a shower as usual and took a quick look in my tank cupboard (tank as in hot water, not as in armoured).

What did I see?

Nothing.

This is bad news as there should be two green lights shining away to indicate the tank is working.

And the job is quite heavy, what with having to move so much stuff out of the way...

I think I shall take it stage by stage.