Ideal C30 combi major leak

[cdbe]

Water ****ing out by the bucketload, think when it was running, isolated electric and turned water off at stop tap, turned water back on and no leaks but sopping wet inside - particularly the PCB and display - dried it out as best as could powered on, no leaks but won't start - intermittent attempts to start/intermittent display/L9 error showing on display.

Central heating side still pressurised (but it was obviously mains water leaking). Leak appears to be high up (wet at base of fan venturi).

Waiting for my engineer but just wondered what it could be and chances that PCB might dry out?

 

[Jurassicspark]

Probably, you'll have to bite the bullet and get a replacement PCB.

 

[cdbe]

Yeah, bit of a pain - didn't leak when not running, won't run without PCB so I have visions of new PCB in a plastic bag to run it for a minute to find source of leak! Unless there's a common fault on these - I'll see what my man says tomorrow.

 

[Stuckinarut]

Yes +1 for pcb and best waiting for your engineer.

 

[gas112]

any chance it was water coming in via the flue ?

 

[cdbe]

It was chucking it down outside but there was a black bucket and a washing up bowl collected before stop tap shut.

I'll update when he's looked at it.

 

[kidgreen61]

Virtual pint says a rubber seal on plate hex has failed, mains water will then spray everywhere.

 

[cdbe]

He's been round - couldn't see anything obvious but said I'd need a board to get it running in the first place. I was just about to go and get one when I pressed the little reset button (I'm not an annoying customer stood behind him - he's a mate of mine) a few final times and suddenly the L9 cleared and it fired up - we ran the hot water for 10 minutes and no leaks. Conclusion at the moment is rain through the flue, boiler been in 5 years with no previous issues so very strange - it was very heavy rain but nothing we're not used to in sunny Rochdale so presumably blown in horizontally.

I'm not sure how the board will fare long term but it's not a great issue if it does fail.

 

[gas112]

check your gutter above it next time it rains the down pipe might be blocked or a joint gone running down the wall and in through flue

 

[Stuckinarut]

check your gutter above it next time it rains the down pipe might be blocked or a joint gone running down the wall and in through flue

Downspout looks blocked imo

 

[cdbe]

I didn't say anything at the time about the two posts above, but the house had been suffering with some drainage issues (soil stack backing up and kitchen sink slow draining) which I thought I'd resolved (broken rest bend etc). Anyway, I've recently been back as the tenant said she had bathwater coming out the kitchen sink!

So it appears the drain is still partially blocked lower down the run, a separate issue, apart from the fact that when I looked at the house I can see that the boiler condensate pipe is plumbed into the rainwater downpipe (the one you guys said looked blocked), which collects the rain from the entire terrace and runs straight into presumably the same blocked drain.

I'm thinking, if the downpipe was full to the top with water, could it have entered the boiler via the syphon?

Hasn't happened since but it hasn't rained much, and the PCB seems to have dried out fine.

 

[Stuckinarut]

Could have entered/backflowed into the syphon, or when the boiler is in use not been able to get away.

 

[gas112]

yep could well be coming back through the syphon put an air break into the condense pipe outside so the water coming down that down pipe doesnt come back into the boiler if it blocks .
Better still if it could go into the sink waste internally doesnt look far away