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Recent content by bullyrai

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    Heat Exchanger for SIME Format 110C Boiler

    Hi, the DHW HEX has gone on the above boiler, replacement part is 6281525 which is a 16 plate HEX. I've found part 6281535 which is an 18 plate HEX and the size and fittings are the same (albeit a little fatter due to the additional plates). 6281535 was introduced to replace an earlier...
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    SIME Format 110C Problem - Possibly gas valve

    I have a SIME Format 110C Combi boiler which uses a SIT 845 Sigma gas valve. I've spent 2 weeks trying to isolate the problem with my boiler. It gradually ground to a halt, it began by only firing after a reset then it only came on in the evenings for a few hours. The fault light I am...
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