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Boiler issues
Former Community Member
We have a Potterton Combi boiler, it was losing pressure. Engineer replaced the diverter valve and said it was corroded. It worked fine for a few days before making a loud banging noise for s few minutes which stopped when the sink taps were on. It was ok for a couple of days and then went off completely. The engineer says the circuit board needs replacing but I'm wondering what caused the issue with the circuit board & whether it will just blow again. I think the boiler is about 8 years old. Any advice welcome.
The water regs define a whole list of possible contaminants and corresponding precautions against backflow - often a simple (single) non-return valve wouldn't be considered adequate (as they can fail) - often double-check values are specified, or for the nastier contaminants even more reliable methods such as a physical air-gap (e.g. taken from a cistern where the inlet valve is above any possible water level) is demanded.
The water regs define a whole list of possible contaminants and corresponding precautions against backflow - often a simple (single) non-return valve wouldn't be considered adequate (as they can fail) - often double-check values are specified, or for the nastier contaminants even more reliable methods such as a physical air-gap (e.g. taken from a cistern where the inlet valve is above any possible water level) is demanded.
