Baxi Combi 105e leaking plate heat exchanger

[TankEngine]

I knew that the boiler was leaking and could hear a gentle hiss. I eventually managed to find a small jet of water spraying out of the plate heat exchanger onto the wall that the boiler is mounted on. Whan the pressure in the central heating circuit falls below 0.5 bar the leak sems to stop. Do I need to change the plate heat exchanger and if so, is it straight forward enough for someone who isn't a plummer? Thanks.

 

[scatmanjohn]

Yes and Yes

 

[TankEngine]

Thanks - is it a common problem?

 

[scatmanjohn]

Yes it is quite common but usually the leak is internal which results in the boiler overpressurising.

 

[TankEngine]

Is it part 248723 (or E68 180)?

 

[TankEngine]

And would you also recommend buying new seals 248049?

 

[scatmanjohn]

I don't know the part number but i think the seals come with it, but i would ask first.

 

[timmy74]

I don't know the part number but i think the seals come with it, but i would ask first.

anyone got a link to buy silicone grease? a very hand piece of stuff whilst renewing o rings

 

[ChrisR]

ANy plumber's merchant. Or 15 seconds on Google.