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    Potterton Kingfisher Mf Cfl50 Boiler keeps going on lockout

    I have a Potterton Kingfisher Mf Cfl50 Boiler, sealed system, separate CH and HW valves. The boiler keeps going onto lockout and I'm after some advice. When reset and coldish it fires up fine. Pump goes OK, valves working OK, etc. After a few minutes the gas goes off and it continues...
  2. V

    Potterton kingfisher MF lockout problem

    I have a Kingfisher MF boiler, conventional flue, HW and CH zone valves on a sealed system. The boiler goes onto lockout condition every now and then. During that time pump still runs and reset button needs pressing before system will re-start. The problem appeared to be pretty random but now...
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