IVE HAD THE SAME PROBLEM BOILER KEPT GOING TO RED LIGHT LOCK OUT AFTER MANY CORGI ENGINEERS VISIT I CALLED VALIANT LTD WHO ADVISED ME IT WAS A GAS STARVATION PROBLEM I NEEDED NEW GAS VALVE HAD THIS FITTED AND PROBLEM FIXED.. SO PLS CALL VALIANT LTD AND EXPLAIN YOUR PROBLEM THEY ARE REALLY HELPFULL
COLIN PEACOCK
September 2008