Having browsed through a few similar lockout problems i.e. boiler runs fine forseveral hours then locksout requiring a reset.An added problem i have is that the boiler overheats causing the lockout,but doesnt overheat all the time,suggesting an intermittant thermostat problem. interestingly when the front control panel is down the thermostat can be heard clicking in and out when raising or lowering the temp set point. However when the panel is raised and secured in its normal working position,the burner remains on constantly no matter wether the temp set point is raised or lowered. Has anyone come across this problem?