biasi 24 spark lock out

  1. JBseymour

    Biasi 24s no spark

    Hi, bit of a problem with my boiler I wondered if anyone can help? No heating/DHW. When heating/DHW demand is switched on; pump runs, fan runs, but after sequence no spark then lock out comes on. checked ohms on airflow switch and that's working, test bung is in. Flue not blocked I have a...
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