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  1. S

    What Next?

    What failure code is displayed?
  2. S

    problem with flame detection error on trianco tristar optima

    Many thanks, any details of alternative part numbers would be helpful, it still is an efficient boiler with weather compensation when it is working.
  3. S

    problem with flame detection error on trianco tristar optima

    I have the same fault on a Trianco Tristar Optima 28 SB. There are a pair of boilers installed, one with the intermittent flame detection failure (error code 1 33), the other with no faults. Exchanging parts between the pair of boilers, including the PCB, revealed the faulty component to be...
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