Baxi 80e doing my head in !

[sausagefingers]

As the title says, my Baxi 80e is doing my head in

The pressure gauge steadily climbs and then passes at the 3 bar mark. I constantly have to relieve the system pressure and we have a permenant puddle outside now !

We have flushed out the heat exchanger, changed the pressure vessel for a new one, and still it does the same.

We have disconnected the fill loop just in case that was passing, but it still does it.

What could it be?

 

[gavinda]

is connected to an unvented cylinder?

 

[gavinda]

sorry just realised its a combi(hot day today ) its probable the plate heat exchanger.. easy enough swap, just memeber to get the o-rings/wahers for it.

 

[holty]

if you isolate the cold supply just under the boiler,and it stops then your looking at the plate heat ex.

 

[baxpoti]

Defo plate heat

 

[sausagefingers]

fantastic. thanks very much