Vaillant ecotec plus 624

[Christopher buzzard]

Hi all. Got called to the above boiler with fault code F61. Checked wiring harness from gas valve and all was ok. Reset the boiler and it worked fine. Left it running for 20 mins coming switching it on and off, it worked every time. The only thing i did notice was the display was acting up. Jumping up 20 degrees, down 10 degrees and so on. Is that down to a fault on pcb?

Thanks

 

[Harvest Fields]

Pcb/NTC/Earth?

 

[Harvest Fields]

Sure there is a video on it somewhere

 

[EvilDrPorkChop]

PCB if it's the fault code i'm thinking of. Is it intermittent and only does it once, maybe twice a day? If book says F61, Gas Valve defective then it's PCB.

 

[Christopher buzzard]

I thought i had seen a vid which heating geek did on YouTube. Will look back through his history

 

[Christopher buzzard]

Thanks @EvilDrPorkChop. Def said that in the manual. Yes intermittent.

 

[EvilDrPorkChop]

Thanks @EvilDrPorkChop. Def said that in the manual. Yes intermittent.

Yeah it's PCB then. Is it about 7/8 years old boiler?

 

[Christopher buzzard]

Fitted 2010

 

[EvilDrPorkChop]

Fitted 2010

Sounds about right, they usually go around that age. Make sure you take serial number to parts place, as from memory I think there's two different versions of the boards (Or I could be thinking of another boiler!! )

 

[Christopher buzzard]

Thanks for your help

 

[Harvest Fields]

No worries

 

[Burger]

Hi all. Got called to the above boiler with fault code F61. Checked wiring harness from gas valve and all was ok. Reset the boiler and it worked fine. Left it running for 20 mins coming switching it on and off, it worked every time. The only thing i did notice was the display was acting up. Jumping up 20 degrees, down 10 degrees and so on. Is that down to a fault on pcb?

Thanks

I believe it can be the gas valve, but usually pcb (certainly true on ecotec pro). Check resistance of gas valve pins.

 

[ShaunCorbs]

pcb