Central Heating won't turn off!?

the control knob will be broken on the contiuous position the only way you can turn it off is by turning off the boiler to repair you will have to remove the control knob by pulling it out towards you then inserting a small screwdriver to push out the bit of plastic on the pcb then turn the poteniometer to the left to change to dhw only then get a new knob and fit it in by pushing it in hope this helps

ricky
January 2008

Thankyou. But technically the CH is still on and will it still be burning gas?

Anonymous
January 2008

Until you can find the cause you could turn the thermostat down.

Anon E Mouse
January 2008