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  1. N

    Vaillant ecoTEC plus 428 operation block function

    Ok thanks will try it and let you now how I get on
  2. N

    Vaillant ecoTEC plus 428 operation block function

    Says 1
  3. N

    Vaillant ecoTEC plus 428 operation block function

    Hi yes it does
  4. N

    Vaillant ecoTEC plus 428 operation block function

    Hi sorry my mistake it was the I and + but does not give me the option 21
  5. N

    Vaillant ecoTEC plus 428 operation block function

    Hi just wanted to ask how you turn the kw rating down on the ecotec plus 428 I've tried the +/- together but it does not give me the 21 option sorry to hijacking this thread but having the same symptoms
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