Recent content by mclocks

  1. M

    valliant code s.54

    Hi, I am having trouble with my hot water on a combi turbomax boiler. The hot tap produces water on demand,then after a very short while the temp rockets to 100 degrees,the flame goes out,and if you press the 'i' button, s.54 is the displayed diagnostic. When I look up s.54 in the...
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