Baxi Combi 80e

[KerrAvon]

I have a couple of problems with this boiler. The first one is the domestic hot water not heating between 6:30 am and 10:30 pm. Nothing to do with the timer. I suspect its the mains water pressure being too low so the flow is insufficiently high to trigger a faulty pressure sensing mechanism. So it probably needs a new DHW diaphragm or a bit of a clean.
The other problem is that when the hot water does come on it heats up the water in the central heating system. The central heating pump doesn't come on so it doesn't seem to be a logical/electronic problem. Is this normal heat conduction though the boiler components or is there likely to be a leak somewhere?

 

[sooey]

Looks like you need a new diverter valve.

 

[KerrAvon]

Looks like you need a new diverter valve.

When changing this do I need replace any accessories at the same time - washers etc or is it just drain then and replace the 248061 valve?

 

[shawd]

You will need new 3/4 fibre washers new 1/2 fibre washers and new o ring for bypass pipe, and be gentle with the primary flow pipe that goes upto the main heat ex,,,, may leak

 

[KerrAvon]

You will need new 3/4 fibre washers new 1/2 fibre washers and new o ring for bypass pipe, and be gentle with the primary flow pipe that goes upto the main heat ex,,,, may leak

Are these generic items or do I need to get Baxi's?

 

[45yearsagasman]

You should be able to use 1/2 and 3/4 fibre washers obtainable from any good parts supplier. Now why are you replacing the whole valve assy when parts are available to overhaul the valve.I have never replaced the whole valve and always overhaul it instead.

 

[KerrAvon]

You should be able to use 1/2 and 3/4 fibre washers obtainable from any good parts supplier. Now why are you replacing the whole valve assy when parts are available to overhaul the valve.I have never replaced the whole valve and always overhaul it instead.

Because sooey said to do so.