What's happening is this. About 1 AM my immersion heater fires up on the economy seven. Some time later my water pipes seem to start resonating. The noise is like a mournful whining which wakes us up. The cure is to turn off the cold water at the main valve. In the morning when we turn the water back on again there is no problem (immersion off). Anybody any idea what's going on? We recently replaced the sink in the kitchen. Any connection or coincidence?
- posted
18 years ago