Worcester 24cdi rsf external leak

[theterracedhouse]

Hi there, Can anyone help me please?

First time I have used the central heating for such a long time and when I flick on the central heating, the pressure gauge indicator goes right round to the max (4) The radiators are fine and don't appear to need bleeding. When I looked outside, there is a copper pipe coming from the boiler and through the brick, this had water pouring out! I could only get it to stop if I switched the boiler off!

Just wondered if I am missing something very obvious? Pressure is normally between 1 and 2 when the boiler is normally on for hot water. There is a white key inserted that is at the 12.30 Position. Is that normal? Don't want to mess around incase I do some damage so hoping you kind people may be able to offer some advice!

Thanks in advance x Maria

 

[Stingray13]

Has someone topped this up with water?

 

[theterracedhouse]

Hi, No one has touched the boiler for a long time, hot water all performing as normal, Just not noticed the water on the external wall before (which coincides with the central heating being switched on)

 

[nortonj]

Sounds like you need the expansion vessel recharging or replacing. Water us expanding and opening up the pressure relief valve, hence the water outside

 

[theterracedhouse]

Thanks NortonJ, Is that an easy thing to do( if I can get hold of the instructions)? Or should I call the professionals in?

 

[nortonj]

It depends how confident you are. You need to locate the expansion vessel within the boiler attach a pump (footpump with a pressure gauge would be fine) and then with a drain valve open to ensure system pressure is at zero pump the footpump up to about 1 bar. If this does not solve it then the expansion vessel has failed and will need replacing.