Vaillant TURBOmax VUW 242 - Multiple problems!

[Whitespirit66]

Whitespirit u have said that before about expansion vessels , an I'm afraid it's ****! Vaillants often expel water from the shraeder valve if the vessels are flat, the tanks leak around the seam internally ,when repressured they usually reseal into the seam

I don't doubt that, and I realise that you have vast experience of these boilers. After you pointed out the situation on the previous occasion, I had already changed the EV.

However, I still had the old one on the scrap pile. I tried to put some air into it, and pressure couldn't be maintained. I cut the EV open, and the diaphragm was holed.

Is this a rarity? Do I try to repressurise all of these EVs if water is emitted, and risk call-backs?

 

[Agile]

If you learnt how to test these in situ then you would not have a problem.

Following the correct procedure for repressurising the EXV will automatically identify all problems!

Sorry the FAQ description is not as good as it could be! I would be prepared to rewrite it if anybody asked me to.

Tony Glazier