Greenstar 25si hot water is luke warm and CH comes on ??

[kenyansimba]

HI there guys,

i couple of days ago, the hot water started coming out luke warm and CH seems to kick in for some reason..

Any ideas, please help.

Thanks

 

[picasso]

sticking diverter valve.

 

[45yearsagasman]

If your rads are heating during a hot water demand and CH is off, then your diverter valve is faulty and passing to the rad circuit.

 

[kenyansimba]

Thanks guys, can this be cleaned out/repaired or do i need to replace it?