<sigh>
The central heating boiler has disgraced itself again, leaving a great wet puddle on the floor.
Got up this morning and thought it was a bit chilly.
Hmm, no heat.
Look at heating timeclock. No lights on, and no display.
Go to meter cupboard, look at consumer unit. Circuit RCBO tripped. Hmm.
Switch it back on. It stays on, and does not trip again. Good.
Still no heats.
Down to the garage where the boiler lives, to be met with a puddle on the floor.
That's not good.
Zero pressure on the gauge, so that's why the boiler is not firing up.
Experimentally open the fill loop to pressure it back up.
Water pisses everywhere out of the boiler.
Stop that right away.
I have a maintenance contract with BG for exactly this eventuality.
They have availability today!
And they turn up!
Primary fault is the main pressure sensor on the water loop has literally burst apart, spraying the entire inside of the boiler with water.
This is replaced, curing the water leak, but it won't power up.
New PCB installed.
Still won't power up.
Looks like something else has gotten wet, and is not happy.
So he's gone away and will come back tomorrow with some more PCBs, a fan, pump, and HV Spark Igniter.
Bah.