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Hi, I have a Baxi system 100he plus which keeps cutting out on overheat. Could any one explain what the flow stat and thermistor does. I am guessing that the stat is a safety cut out ? and the thermistor controls the boiler power relative to the water temp ? I have accepted the fact that I...

I have a Baxi sytem 100 he condensing boiler. Recently it had an ignition problem which was sorted by cleaning the starter electrodes. Now though it keeps locking out on 'overheat'. I have found that the combustion chamber front panel seal was leaking and have replaced the seal but still...

I have a Baxi system 100 he plus with several faults. When heating rads from cold to hot system pressure goes too high. Sometimes it goes to overheat lockout. Occasionally the boiler won't start at all and goes to ignition lockout. I am regularly topping up system pressure. I have checked...

I have a 3 yr old baxi 100he plus. Just recently it has started playing up. If it is starting up from cold it tries to start 3 times whilst making a fast clicking noise, and a couple loud booms and then goes to a fault state. The led fault pattern indicates an 'ignition fault'. But when I...