re-fill boiler pressure!

[dyno]

hi there i need some info on filling my boiler, its a bosch worcester 24 cdi rsf , problem is i cant seem to fill the system back up to its normal pressure of just under 1 bar it has a built in filling loop under the boiler i have to insert a white filling key in to the loop then turn a little grey knob to fill ihear the water for a second untill it gets to the key bypass but then stops and no water enters the system at all do i need to bleed the radiators before it will fill ? or do i have a faulty valve? any ideas would be great, thanks!

 

[kevplumb]

i have to insert a white filling key in to the loop then turn a little grey knob to fill ihear the water for a second untill it gets to the key bypass but then stops and no water enters the system at all

you turn the knob and the key

 

[PEDANTICVINDICTIVEMAN]

Boiler needs replacing, obviously had it's day.

 

[Walshie]

Sometimes spindle which grey knob is attached gets rounded off, pull off knob and twist spindle anticlockwise with pliers, also make sure key is fitted and turned

 

[kevplumb]

make sure the key isnt worn or it wont work