I have problems with my worcester boiler , ignition lockout seems to be happening quite regular. this always happens at the start of a demand , press the reset button then its fine no further problems ,this perhaps happens now about 3 times a week . as i said the problem is always when the boiler is set to come on first time . the boiler was serviced recently . and it was okay untill recently. You cannot rely on it coming on from the timer . As i said there is no set pattern , it might be alright for a few days then , then it might lock out 2 times on the trot , otherwise heating is fine. any ideas.