Unable to fill the system (Worcester 24CDi)

19 Oct 2005
Reaction score
United Kingdom

I released the presure on my boiler last night, replaced a couple of radiators, then re-filled the system and bleed the radiators.
Unfortunately, I only realised tonight that we have been operating the boiler with no pressure. Does using hot water from the boiler affect it when there is no pressure in it?

I have now tried to fill the system but nothing is happening, the valve is operating ok (mains water entering the filling loop), but the system is not pressurising. Anybody able to offer any advice, please?


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Pressure gauge goosed!/ blocked with crud. Are the radiators full, system isolating valves open and auto air vent cracked back1/4 turn :?:
If you have manufacturer's instructions for boiler these will give you info you need!
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Sorry Wiggikins, I must of been viewing your post and it was only displaying the first part of it.

Anyway, rads are full, I'm am not sure where the system isolating valves are?

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