Vaillant EcoTec Plus 615 - F32

[EvilDrPorkChop]

Was called out to this today. Earlier in the week the boiler had leaked and the guy had an emergency plumber out who proceeded to repair the leak, replace the PCB and charge the guy £900 to then tell him the boiler isn't working and needs a new fan. It did need a new fan (They wanted to charge another £440), so i've put one in for him. All good and working (All checked out with 26.9 checks fine) but the guy has rung saying that it's now doing F.32 again and won't reset or fire.

Surely the second fan couldn't have gone? Anyone had F.32 with the gas valve etc. as it's the only other thing I can thing of that would have got wet. Going to ring him in morning to see if he can hear the fan running outside when it's trying to go through its modes.

Any thoughts?

 

[Burger]

Having worked mainly on the Ecotec pro (very similar), I’ve only had it with fan wiring harness and pcb. Did the pcb look new? Did the wiring look ok or get wet?

 

[EvilDrPorkChop]

Probably, there was water still in the boiler when I attended and that’s from days ago.
PCB looked ok, hard to tell but looked pretty new. My main concern is stick another fan in and it does the same again, it ain’t close to home either so it’s a trek to get there.

 

[Burger]

Hairdryer to dry the wiring out? 🤷‍♂️

 

[Chuck]

Er, something's not right. I'm not GSR so why am I able to see this thread in what should be a closed forum?

@Dan - one for you?

 

[EvilDrPorkChop]

Went back out with another Fan. Seemed the first had popped, advised that really he needed a new boiler but i'd swap the fan again however if anything else further happened he'd be needing a new boiler. So swapped the fan out, tested all out again, all fine. Ran fine all day on HW, he's put heating on last night and then he messaged last night to say water is p*****g out the bottom again (Probably recking another fan). So either there's a problem somewhere or the original guy hadn't repaired the leak correctly (As i've only replaced the fan).

He's had a builder move a rad which is ringing alarm bells, but even if the system was blocked somewhere (A gate valve shut etc.) then it's got an internal bypass and the PRV would just blow off if pressure got high, so not sure why it would leak on just heating.

 

[Burger]

Does it have those ridiculous rubber hoses inside, or one of those very perishable condense hoses?

 

[EvilDrPorkChop]

No rubber hoses and the internal condensate pipe looked OK when I was there. Only thing I can maybe think of is whether the waste pipe is blocked/cut off that the condensate goes into (Builder is doing kitchen), i'll have to ask him if pressure has gone down. If not that might be the cause.