Vaillant ecoTEC plus 837 R1 with persisting F75 fault

[Harvest Fields]

I’m good I know what the problem of with that Code. But thanks anyway.

 

[yossibac]

Do you have an external pump as well as the one in the Boiler?

No, there is no external pump

I’m good I know what the problem of with that Code. But thanks anyway.

We all know what F75 is, what we didn't know is why by taking all the appropriate actions it was still there.

 

[Old Account]

We have found the solution. For those of you who tried to help, if you would like to know please pm me. And to the others that didn't, no, we are not DIY

Why would someone as a professional gas safe engineer make the customer poor by changing almost the whole boiler? Why not calling manufacturer and get some information or perhaps get it solved via warranty. It doesn’t seem very good to change all those parts ... very unprofessional

 

[rpm]

Why would someone as a professional gas safe engineer make the customer poor by changing almost the whole boiler? Why not calling manufacturer and get some information or perhaps get it solved via warranty. It doesn’t seem very good to change all those parts . very unprofessional

Apparently changing bits here and there over 5yrs cured it only for it to return after a few months is the answer.