Vaillant boiler no hot water / shower

[pogo]

Hi,
My vaillant turbomax boiler works ok for central heating and hot from the tap but when I run the shower the water is just cold but after a while get a short burst of warm then cold again. Any idea's what my problam is any help

thanks

 

[Agile]

Sounds like the flow through shower in not enough to turn it on.

Try cleaning the holes in the head!

The other/next thing is to run a tap half flow at the same time as shower!

Tony Glazier