My boiler keeps locking out,I switch off and on to reset and the boiler ignites,sometimes this will take 3 or 4 attempts. one this has been done you can draw hot water, however when it next tries to light (its set on comfort mode) it will lock out. If the boiler is warm I have to run the hot tap until it cools before trying the on/off switch. Pressure gauge is 1.5 bar.The only other thing I've noticed is the vent fixed to the pump is a bit crusty around the plastic cap.
