when my heating has bin on and the water the boiler will shoot down after about 4 to 5 mins dont no serial number it realy old that all i can tell u really and brown at bottom dont really no owt about them sos would be grate full for as bit of help

ben, August 2008

Check to see if there is enough water in the system.
Check the Feed & Expansion tank is not dry.
Is the pump operating OK

Johneboca, August 2008