Boiler not turning off now won’t turn on without HW

[terryplumb]

Which way does the spindle needs to be turned, towards the heat pipe or towards the cylinder?

Turn it clockwise till it comes to a stop.
If that doesn't heat your rads within 10 mins ,turn it anticlockwise till it comes to a stop.

 

[Bmd33]

Those spindles do only turn about 20°. Like less than 10 minutes on a clock face.
Assuming what's wrong is that the motorised valve has stopped working (you may be able to replace the motor inside, in due course)
With the side lever on the motorised valve head you can latch (against the spring) it in the M position which means manual - it'll then be open to heating AND HW,
If you turn the cylinder thermostat right up, to 90 sort of thing, the boiler will come on as long as your programmer is calling for HW.
The temperature actually on the boiler, set lowish, will give you some HW and at a reasonable temperature, and heat in the rads, at the same time.

The CH setting on the programmer will do nothing, because the valve isn't moving.

If you have the head off the valve, leave the spindle in the middle,. The outlet from the 3 port valve marked "B" is the one to HW. You would turn the spindle away from it, to make the rubber ball inside bung up the CH outlet and let water go to HW. BUt you need both I expect.

Do you have an electric immersion heater on the cylinder.?

Thank you. I’m just so confused why it was only giving central heating and not turning off to only now giving heat when the hot waters on, would be happy if I could just get it to go back to that until I can get it repaired.

Yes, it’s got an immersion which I was using when it was only working the CH.