I have a WB 400RSF combi.
When I close my cold kitchen sink tap hard - it's a quarter turn ceramic type - it turns the boiler on.
My theory is that the water hammer caused by closing the tap sharply transmits through the water system and into the hot water side in the combi, and the shock wave flicks the flow switch on, thus setting off the hot water cycle.
Has anyone else experienced this and know how to cure it?
When I close my cold kitchen sink tap hard - it's a quarter turn ceramic type - it turns the boiler on.
My theory is that the water hammer caused by closing the tap sharply transmits through the water system and into the hot water side in the combi, and the shock wave flicks the flow switch on, thus setting off the hot water cycle.
Has anyone else experienced this and know how to cure it?