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  1. 0

    chaffateux celtic FF Combi

    All normal except for some micro boiling when DHW is demanded. After the DHW has been running for a while, the gas valves suddenly shut down, the thermoelectric valve shuts down and the pilot goes out. The boiler temp is not high enough to trip the boiler temp limit stat. at the point of...
  2. 0

    Chaffoteaux Celtic FF. Pressure switch hunting.

    What causes a flue pressure switch to hunt continually?
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