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  1. O

    POTTERTON PROMAX NO CH BUT HAVE HW ??

    Thanks Again Dave. I will do ths in the morning now so plase keep in touch. Regards Andy
  2. O

    POTTERTON PROMAX NO CH BUT HAVE HW ??

    Hi dave an thanks for the reply. The orange wire woul come from which of the 2 two way valves or does it not matter
  3. O

    POTTERTON PROMAX NO CH BUT HAVE HW ??

    i have checked both 2 way valves and they work fine
  4. O

    POTTERTON PROMAX NO CH BUT HAVE HW ??

    Hi i have a pott promax he24 plus boiler, the hw is fine but no ch it is about 5years old can anyone please advise. When i switch to ch the boiler fires up but when i switch to ch it does not fire up ?? when both on togrether it fires up till hw gets to temp ??
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