[david wood]

hi my varistream flow controler is playing up .its switching its self on its done it 2 different nights now and loads of times while driveing between jobs 

[Michael Peterson]

take it off, flow controllers are a nightmare, have a nice flow and work fast, or fit a tap between the top of the pole and the brush

[Spruce]

hi my varistream flow controler is playing up .its switching its self on its done it 2 different nights now and loads of times while driveing between jobs 

Open it up and see if there is any moisture inside. If there is then try to dry it out with a hairdrier - not a hotair gun.

If not then disconnect it, open the top and put it on a warm radiator to dry out.

[Tom White]

take it off, flow controllers are a nightmare, have a nice flow and work fast,

Agreed!