Are There Any Plumbers About?

[nailit]

I posted a few weeks ago about my water pressure continually dropping (with a gas central heating system/boiler that's just a year old) and continually having to manually get the water pressure back. A few weeks ago the council came out and injected something into the water pipes to 'seal' any leaks that may be there.

Last night it happened again only this time I cant get the pressure back. Rang the council only to be told that having no hot water/heating isn't an emergency and to ring in again on Monday.
Its doing my crust in!
Any plumbers who can perhaps give me any advice to pass on to the council workers when I can eventually get them back in (yet again)??

TIA.

[Theland]

The closed system is losing pressure from a leak possibly.

[nailit]

They couldn't find any leak Theland and injected something into the system to seal any possible leak that they couldn't see :-(

[Theland]

They missed something. Know quite a bit about such closed systems. Possible fault on pressure safety valve.

[nailit]

//They missed something//
No kidding ;-)

My boiler is currently saying
F22
Safety switch off
Low water pressure.

[Tilly2]

Is F22 like Catch 22?

[nailit]

//Is F22 like Catch 22?//
LOL Tills, seems that way at the mo!

[Tilly2]

You just can't win!

[nailit]

Im missing having a bath already!
Just soaping down with a couple of kettles of water...

[Gizmonster]

https://www.boilerguide.co.uk/manufacturers/vaillant/error-codes/vaillant-f22-error-fault-code-explained-fix

According to the link, as well as a possible leak, it could also be that there’s an issue with the pump, the pump lead is defective or a defective pressure sensor.

[The Builder]

F22. Standard error code Nails. Serious loss of pressure.

Sounds like it's far more than a leak.
System pressure rises, excess pressure blows the water out of the expansion pipe.

This pipe goes through the wall to outside. The usual thing is to stick a milk bottle over the end, then come back later to see if it's full.

Causes probably... faulty pressure sensor; faulty pressure safety valve; lack of air pressure in the expansion vessel, or a ruptured diaphragm inside the expansion vessel.

Something diabolical must have happened to stop you from re-pressurising.......... unless, the heat exchanger has had a serious hole in it, and the water is going straight down the condensate pipework (inside the boiler itself)

[nailit]

Thanks for additional answers Giz and Builder.
Council plumbers came out this morning and got it back up and running again. Replaced some part or other but seemed mystified as to why it constantly loses pressure. Seems ok at the mo though, fingers crossed.
Thanks for replies all.