Leaking Expansion Vessel on BAXI 105e

[belfastjohn]

BAXI 105e - 10 years old

Hi, all. First post so apologies if its in wrong place or well covered. After two days of searching forums I'm confused. Water appears to leak from somewhere around the bottom of the EV when central heating is switched on. It only starts leaking when the water temp hits 80 degrees.
I checked the valve at the top of the EV and there was no air left in it to expel.
With the pressure gauge on the boiler reading zero I pumped 1 bar of air pressure into the EV. Topped up water until boiler gauge read 0.9 bar.
Switched on CH. Water temp hit 80 degrees and water started dripping again.
Switched of boiler and checked valve at top of EV again. Water came squirting out of it this time with some force.
I'm assuming the EV is shot.

Was reading about fitting an external EV but I am not sure if it can be done when the internal EV leaks at 80 degree temp.

TBH Its an educated guess its the EV leaking, but all the visible evidence (limited as it is) would point to it.

So main question is will fitting an external EV sort the problem or does the leak in the internal EV mean I need to go to the expense of replacing the internal EV

Many thanks

 

[Jay Jay]

Hi can't give any advise as casing needs taking off,if it was me call baxi and there send out an heateam engineer(there own) to replace the faulty parts.you will have to pay a fee around 250 -300 quid but worth it

 

[lame plumber]

or use a local technician and pay less for the same result

 

[Jay Jay]

or use a local technician and pay less for the same result

The trouble is if any other parts need replacing at least they have it on van also I heard you get 1year garentee on the boiler as you can pay a monthly payment, a few customers have said it works out better for both parties,nothing worse then changing a part on an old boiler and get a call a few days later another part is leaking,

 

[Dotty]

The advice is to get in a gas safe registered pro.