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Hi. The low pressure light was flashing on my combi boiler this morning. This happened a few months ago and asked my brother to have a look at it. He turned a valve/or somothing similar? under the boiler and increased the pressure. So I did the same thing this morning - but I've increased the pressure too much - over 2.5 bars! I quickly turned the boiler off as the pipes started making noises, but I dont know how to reduce the pressure! I am stuck in the cold and dont really know anything about boilers. Can someone please tell me what to do? Any advice will be much appreciated. Thankyou. Sammy