Air vent overflowing on Vaillant VCW GB 242 EH

rsjon · 27 Dec 2006

Hi! My Vaillant VCW GB 242 EH had a problem with the CH not working after drawing DHW. After reading your forum I diagnosed a faulty water section, replaced it, set up everything as per the manual, and all now seems well. Thank you for the excellent advice.
However, now I have refilled the system and bled all the rads, the automatic air vent is permanently overflowing a tiny ammount of water!
Am I right in thinking that the vent is now faulty (possibly did not like being used after no use for a long time), or is there a more sinister reason? Thanks again for your previous help; keep up the good work!
Jon.

bobw1956 · 27 Dec 2006

Remove the auto air vent,unscrew the top. remove the float, clean and replace.

Bob,s your uncle!!

kevplumb · 27 Dec 2006

bobw1956 said:
Remove the auto air vent,unscrew the top. remove the float, clean and replace.

Bob,s your uncle!!

methinks isolating and draining the boiler first might be an idea

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Air vent overflowing on Vaillant VCW GB 242 EH

rsjon

bobw1956

kevplumb

DIYnot Local

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