boiler

[danmad60]

i have a lynx2 potterton boiler that when i try to draw hot water it only gets lukewarm but if i switch the central heating on it does get hotter i suspect it to be diverter valve but does anyone have any other ideas
many thanks john

 

[Agile]

If it fires up with CH off then the diverter is likely to be OK but UNLESS the rads het hot when taking DHW.

Otherwise the problem will be something else, scaled HE or sensor etc.

Tony

 

[danmad60]

thanks for the reply and i forgot to mention that when its on dhw and its lukewarm all the rads do start to heat up

 

[GasMan1965]

Thats the diverter valve !!

Isolate the flow and returns under the boiler then run the water ,, if it gets hotter then its gotta be the diverter,, remember to open the flow and returns after the test

 

[danmad60]

i see what you mean many thanks ill let you know

 

[danmad60]

it does get hotter like you said so im looking at the diverter . Thanks for your advice. Could you please explain how the valve works with the hot water i thought they were 2 seperate systems. Just one thing it would be the valve and not the motor thanks john

 

[Agile]

The water is seperate but the diverter unsurprisingly diverts the system water away from the rads when the boiler is providing DHW.

Or in your case doesn't !

Tony

 

[danmad60]

thanks tony but is it the valve or motor

 

[Agile]

I dont know as I have not inspected your boiler!

Most likely to be the moving part is not fully moving or may just be jammed.

Tony