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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.
In my experience losing pressure is usually an indication of either a leak, a failed expansion vessel or a worn/dirty seat on the pressure relief valve. Monitoring the pipe from the PRV can suggest which - continuous drips would be a dodgy PRV, occasional bursts of water more likely a dodgy expansion vessel. Often the expansion vessels have just lost pressure - pumping them up with a bicycle or hand car-tyre pump can sometimes be a solution.
In my experience losing pressure is usually an indication of either a leak, a failed expansion vessel or a worn/dirty seat on the pressure relief valve. Monitoring the pipe from the PRV can suggest which - continuous drips would be a dodgy PRV, occasional bursts of water more likely a dodgy expansion vessel. Often the expansion vessels have just lost pressure - pumping them up with a bicycle or hand car-tyre pump can sometimes be a solution.
