Vailliant 824 f64 fault

[mutley racers]

Evening all. I have been to change a pump on a vailliant ecotec plus 824 as water was not circulating and the boiler kept cutting out. Also when I opened the pump vent it sprayed straight into my face so couldn't check to see if it was turning.

Any way, changed the pump and it started ok but had the same problem. Then it just started giving me the f64 fault. Random at 1st but now continuously.

Hmmm

 

[Scott_D]

Have you got the vaillant app?
It give solutions to fault codes
I will look it up in a mo

 

[mutley racers]

I didn't know there was one. Got the manual, says flow NCT short or faulty pcb. Not sure why changing the pump would cause any issues

 

[Scott_D]

 

[Last Plumber]

Did you get things wet when you changed the pump?
Why did you change the pump? was it faulty?

 

[mutley racers]

No, I always keep a towel over the pcb and have my wet vac at hand. And I always check before I turn on to see if any water did get in.

Yeah, changed the pump as the bearings were goosed. I could not ooennthe bleed button on it as water was gushing out.

 

[mutley racers]

So looks like I will be changing the pcb this morning. Will put in reconditioned one. Maybe also take flow sensor and harness but I doubt it will be a short circuit there.

Can I get some reassurance?

Cheers fellas

 

[Last Plumber]

Check the thermistors with your meter and check through the wiring harnesses too. I would be looking for a short circuit. If you cannot find one, the Board sounds favourite in my mind but it is Saturday Morning and I'm on tick over

 

[mutley racers]

Was the board after all. Thanks all. Have a good one

 

[mutley racers]

Now today i have an email saying the boiler is showing up an F23 fault. Hmm

 

[mutley racers]

Update guys. Changed the plate on this and all is working well now. I got there in the end.

Cheers for the advice.

 

[Harvest Fields]

Until tomorrow😛😛

 

[Last Plumber]

Until tomorrow😛😛

Ha Ha Great minds !
I was just about to type that lol

 

[mutley racers]

Nooooo