Time to replace pcb on boiler?

Maybe the real fault was one of those which was quickly fixed ( low cost repair ) and then the PCB changed ( high profit "repair" ).

There are a lot of "reconditioned" PCBs on sale, one has to wonder how much these reconditioning / repair these PCBs needed and where they came from.

I agree completely, it is a nice little earner. I have inspected a few supposedly repaired/refurbished PCB's, whilst I would expect some evidence of repair, I have never spotted any.
 
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How about non speculation and actual facts, this is from Vaillant website (available publicly) https://vaillantgroup.intelliresponse.com/public/?requestType=NormalRequest&id=1990&source=5&question=Ecotec F61&interfaceID=2

Which lists a PCB failure at the very bottom of the list, which suggests it to be the least likely cause.

Almost any boiler fault can be due to the PCB's software misbehaving, when it reports a fault - when it could be the PCB itself at fault. They idea is to discount the cheaper issues first, rather than blame the most expensive item.
 
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If he had just serviced it, it makes me suspicious that he may have created the potential issue deliberately, during the service, in anticipation of a callback.
That would be some trick Harry...Servicing a boiler and " planting" a fault with a slow burn time of a week..on any component..let alone a pcb..
 
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This is more what we are concerned about, as it all seems very coincidental. In hindsight, we probably should have had a second opinion first, but we were just in a bit of a rush to get stuff sorted for moving...
The engineer was correct in his diagnosis, he cannot have created that fault to gain extra work, and id say he knows his onions if he pitched up with the correct part. Plus his charge was more than reasonable.
 
egardless of what the armchair experts on here are telling you

So what happens to this suspect PCB if the gas technician takes it away..... In some industries a suspect PCB would be destroyed on site to prevent it accidently re-used.
 
So what happens to this suspect PCB if the gas technician takes it away..... In some industries a suspect PCB would be destroyed on site to prevent it accidently re-used.
I imagine it got chucked in the bin or correctly recycled. Modern boiler PCBs are far too complicated for your average RGI to fix with a soldering iron.

Every F61 I've had has needed a new PCB. Seems like the engineer is suspected of being dodgy because he knew his stuff and quickly and efficiently fixed the boiler. No pleasing some people.
 
Which lists a PCB failure at the very bottom of the list, which suggests it to be the least likely cause.
No it doesn’t, it’s the highest percentage of likelihood of the failure.

Also I’ve only ever had F61 as a pcb failure too :whistle::whistle::whistle:
 
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