Vaillant ecoTEC Pro 28 changing AAV

[Steve66]

My AAV is leaking, it is the type with an o ring around the body that is fixed in to the pump with the u shaped pin. I know that other types have a shut of valve allowing the part to be changed without draining the system, I'm thinking mine will need draining to change it? Could anyone advise please?

 

[king of pipes]

The boiler will need draining to do this time for a service call to your GSRI to sort it out .not a expensive job cheers kop

 

[ShaunCorbs]

As you need to remove the cover this means you need to be gas safe

 

[Steve66]

Thanks for the advice. I didn't want to drain the system as I've only just refilled with new inhibitor. Reason I found out AAV is leaking was I was just inspecting internally as diverter valve is stuck as upstairs rads are getting warm when running hot water. I know for my boiler that the original brass diverter valve can be replaced with a plastic body unit which is around half the price of the brass unit, would it be a false economy to have a plastic unit fitted. Boiler is approx 6 years old so I'm expecting it to last at least another 6. Work will be done by Gas Safe fitter, but I will get the parts and drain it down as it will be done on mates rates.

 

[Scott_D]

Have you asked your mate for advise?
Did he tell you to drain the system?

 

[king of pipes]

Leave it to the proffesional is my advice not all valliant parts are interchangeable. cheers kop