Luke warm Domestic water

[zinnia48]

I have a baxi combi boiler, on HW+CH, pressure ok at 1.5bar when cold, CH works fine but Hot water is just lukewarm and never gets hot. Has anyone any suggestions thanks

 

[gas4you]

What model Baxi is it?

Could be as simple as you are running the hot taps too fast.

Try closing them a bit and see if HW temp improves.

Other than that I would recommend getting an RGI in to check the max and min burner pressures

 

[twgas]

diverter valve sounds most likely suspect,but need more info - model will be a good start.
is it a constant flow of only warm water, have you tried turning the heating off and see what happens?

 

[gas4you]

Following on from the above, does the ch flow get hot when only the HW taps are run?