This has been puzzling me all day

[Cliphead]

Was woken up this morning at 7am with the loo flushing, took a few seconds to remember that girlie's away and nobody else in the house. Second thought was burst pipe so dived out of bed and into the loo where the cistern was filling having just been flushed.

No obvious reason why just very weird. How can a loo flush itself?

[Tingles]

Was woken up this morning at 7am with the loo flushing, took a few seconds to remember that girlie's away and nobody else in the house. Second thought was burst pipe so dived out of bed and into the loo where the cistern was filling having just been flushed.

No obvious reason why just very weird. How can a loo flush itself?

It cannot - dreaming? ghost? you are Wilmslow and made it up?

[NickFitz]

There's a tramp living in the loft.

[AtW]

Maybe you are in a wrong house?

[Cliphead]

It cannot - dreaming? ghost? you are Wilmslow and made it up?

No, not making this up or dreaming / sleep walking. Genuinely baffled as to how this could happen. I even lifted the cistern cover to check for ice buildup or anything else that might be wrong but all looked fine.

[RichardCranium]

a) During the night the cold water in the cistern contracted and resulted in the cistern having to be topped up in a trickle. Once the heating came on (a hour before your alarm was due to go off) this heated the house including the water in the cistern making it expand. Eventually it triggered the overflow-prevention-autoflush. Which I just invented.

b) When you went in the night, you didn't flush properly and the cistern had been syphoning all night. Eventually it had to go one way or the other: fill up faster than it was syphoning and stop - or fill up slower than it was syphoning resulting in the float dropping and allowing the syphon to run faster and finish the flush properly. Which it did.

c) The girlie's NOT away you gormless wazzock! That's next week!

d) You dreamed the whole thing as a consequence of the cheese-topped kebab you took to bed.

e) You were still pissed from the night before.

f) You are a somnambulist.

g) It was aliens.

[Cliphead]

a) During the night the cold water in the cistern contracted and resulted in the cistern having to be topped up in a trickle. Once the heating came on (a hour before your alarm was due to go off) this heated the house including the water in the cistern making it expand. Eventually it triggered the overflow-prevention-autoflush. Which I just invented.

b) When you went in the night, you didn't flush properly and the cistern had been syphoning all night. Eventually it had to go one way or the other: fill up faster than it was syphoning and stop - or fill up slower than it was syphoning resulting in the float dropping and allowing the syphon to run faster and finish the flush properly. Which it did.

c) The girlie's NOT away you gormless wazzock! That's next week!

d) You dreamed the whole thing as a consequence of the cheese-topped kebab you took to bed.

e) You were still pissed from the night before.

f) You are a somnambulist.

g) It was aliens.

Heating was on all night including the take the skin off yer hand heated towel rail.

g) It was aliens

[Sysman]

This can happen if the ball cock can't close the mains valve off completely. This can be caused by a sticking handle or a bit of grit that has found its way into the valve. It could also be a valve seal that's perished.

With the weather at the moment it could be that the cistern is iced up. The odds are that it was doing this since the last flush of the night.

The toilet won't flood, it'll just fill up and empty until the problem is corrected (just like urinals in gents - same principle).

[Zippy]

The tramp in the loft theory sounds good to me

[Cliphead]

This can happen if the ball cock can't close the mains valve off completely. This can be caused by a sticking handle or a bit of grit that has found its way into the valve. It could also be a valve seal that's perished.

With the weather at the moment it could be that the cistern is iced up. The odds are that it was doing this since the last flush of the night.

The toilet won't flood, it'll just fill up and empty until the problem is corrected (just like urinals in gents - same principle).

Sounds likely, been looking at plumbing sites that say something similar. Have to say though I've had a good look at it but can't see anything wrong, even put some food colouring into the cistern to see if water is leaking into the bowl but nothing. Definitley no ice buildup.

Maybe just a one off or that damned tramp.