HI ALL, I HAVE A MAIN COMBI 30HE.......THE PROMLEM WITH THE BOILER IS THAT WHEN THERE IS A DEMAND FOR CONSTANT HEATING THE BOILER FIRES UP AND THE TEMP' 30deg' NEON LIGHT COMES ON, THEN WITHIN A COUPLE OF MINUTES OF THE BOILER RUNNING, THE TEMP' RISES TO MAX 80 deg', ONLY THREE RADIATORS GET HOT AND THEN THE BOILER SHUTS DOWN .AFTER ABOUT 10 MINUTES THE BOILER FIRES UP AND THE PROCESS STARTS ALL OVER AGAIN. A FRIEND OF MINE SUGGESTED IT WAS THE PUMP..!!!
CAN ANYONE OUT THERE ENLIGHTEN ME PLEASE . :(