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  1. T

    suprima 50 not resetting cont.

    Thanks for the replies to previous question, :oops: I forgot to mention that when the boiler has mains supply switched on, that the pump is constantly running if the pcb is faulty could it be causing this or is maybe the pump causing all the problems :?
  2. T

    suprima 50 not resetting

    I have a 5 year old potterton suprima 50 which will not reset.(red light flashing).I have tested with a meter the overheat thermostat,temperature sensor and temp control assy.All test ok I suspect the pcb?I would be grateful for any ideas :
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