Or to put it another way... Oh Shit.
So, someone in the house has "faecal urgency" then they wash their hands then they flush the loo. Then they shout... "The water's not going down
- and the pump's making a funny noise."
On a scale of 0 - 10 how far does your heart sink? Mine made it to the MoHo.
I stared at it for an hour, wondering if there was any way I could get out of this. Decided no, I was going to have to tackle it. Marigolds, bucket, nose clip.
I decided that maybe the best thing to do would be to detach the outlet[1] and see if the pump was working by attaching the outlet to a hose and to a bucket. Flicked the switch on and... it worked fine. A bit gag inducing but it worked fine and with a bit of effort and running to the next (normal) loo the noxious contents were emptied out.
I thought that I'd shifted the blockage so I connected it up again and tried a flush. No, it won't flush, it loks like the outlet tube is blocked. I tried a pressure test with a handy pump and yes it's blocked solid. It's 22mm PEX, seamless and without any elbows all the way to the soil stack. So I'm puzzled by how it has managed to block. I don't have anything suitable for rodding it at present so I think a trip to Screwfix will have to be made tomorrow.
I really, really, hate Saniflos.
[1] You won't believe how glad I am that the outlet is downhill.