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i have over filled my valiant boiler with water what should i do?

Hi, I have a valliant boiler that keeps losing pressure. Tonight I intended to top it up but I forgot about it after leaving the top up valve open. It is now over full. Is there a way of emptying some of the water? I have turned the boiler off meanwhile!
Sarah, February 2013
Thanks for the advice, I have drained the excess water and my boiler is restored to its equilibrium!

Sarah, February 2013
find the drain off point on the radiator pipework (lowest point) and put a hose on it and drain excess pressure off the system.you can also use the rad air bleeds but could take time depending on over pressure in system

A1, February 2013
link Click here to see other fixes for Vaillant.