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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.
Also it is a positive pressure boiler, the fan pressurises the whole case, so it is vitally important to check the case seals, else products of combustion could enter the property. See
Thanks for that info Olympus. My old school friend has not as yet suffered any long term health problems by occasionally accessing his old gas boiler. The main circuit board can be accessed without need to dismantle any asbestos containing parts. The electric fan is external to any flue exhaust routes. He has used a 1970s gas room heater for decades. He has not serviced this and the flames lick up the "mantles" in varying colours of yellow and blue. I told him that the room needs a permanent air brick to allow fresh air into it. He said that air comes in through the cracks in the floorboards. (Through the carpet?). But the CO alarm does not sound. Once the children dislodged the gas pipe which is at floor level whilst playing. Gas escaped and smelt horrible. I advised some form of boxing in for the pipe to protect it. David just returned it to its tap connection and retightened the nut. Nothing else. He and his family survive more by luck that judgement.
Also it is a positive pressure boiler, the fan pressurises the whole case, so it is vitally important to check the case seals, else products of combustion could enter the property. See
Thanks for that info Olympus. My old school friend has not as yet suffered any long term health problems by occasionally accessing his old gas boiler. The main circuit board can be accessed without need to dismantle any asbestos containing parts. The electric fan is external to any flue exhaust routes. He has used a 1970s gas room heater for decades. He has not serviced this and the flames lick up the "mantles" in varying colours of yellow and blue. I told him that the room needs a permanent air brick to allow fresh air into it. He said that air comes in through the cracks in the floorboards. (Through the carpet?). But the CO alarm does not sound. Once the children dislodged the gas pipe which is at floor level whilst playing. Gas escaped and smelt horrible. I advised some form of boxing in for the pipe to protect it. David just returned it to its tap connection and retightened the nut. Nothing else. He and his family survive more by luck that judgement.
