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  1. C

    Grant Combi 90 MkII - Boiler won't fire

    Thanks, found the pump to be broken, new one in just testing, fingers crossed!
  2. C

    Grant Combi 90 MkII - Boiler won't fire

    Hi All, I have a problem with my boiler. I had a leak and the expansion vessel was punctured, I drained the system, fixed the leak, replace the expansion vessel with a new one and then refilled the system. On first start the boiler tripped the circuit breaker everytime either the hotwater...
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