I have a kinetico block salt softener about 12 y o. I currently have it isolated, as it recently flooded the kitchen. There is no obvious blockage in the overflow and water does drip through it, but when the machine is not isolated, water is flowing into the reserve tank at full pressure causing the water level inside to rise and rise until it floods over the top of where i put the salt in. I have tried trying to get it to manually regenerate, but it does not. The other thing that may be worth a mention is that, whilst investigating this problem, I have noticed that the open/close valves on the pipes to the machine leak when open.
I have tried my local service engineers, but am waiting since Friday for a call back - any ideas please?