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  1. G

    combi boiler course

    Hi, I have been on the gloworm course which was excellent with great food too and I would also recommend the honeywell boiler diagnostics course, quite hard to follow but invaluable learning.
  2. G

    Combi boiler burner keeps coming on and off

    Hi Halstead boilers are generally the lower end of the market quality wise and are a fav of the landlord. The DHW thermistor is a common fault and is also a cheap part to replace first.
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