Boiler will ignite when below 30oC but when water temp any hotter it will not reignite even when reset until the temp drops.Reluctant to fit PCB if it could be a temp sensor problem.
u can ring baxi and ask them for the reading on the sensor . then u or an engineer can check the sensor with a multimeter to see if u are getting the correct resistance to eliminate if its a sensor fault. but from what u are saying i would think its a sensor fault.
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