- Messages
- 13
I have a combi boiler, recently one radiator has started whistling , the heating is not on nor is the hot water being used ,I have done everything liking bleeding , cleaning and draining the whole system, checking the pressure in radiators, and changed the lockshields on the whistling radiator , which has a lockshield on both sides (no TRV ). When I removed the radiator to replace Lockshields the pipe from the floor continued to whistle while the radiator was not connected.. the whistle can go away for hours the comes back for no obvious reason...can anyone help ???