Recent content by kirkyadam

Thanks for the replies. I've only just moved into the house so I aren't sure if there have been any past leaks in the system and I haven't noticed any leaks myself. I've assummed the system is open top, it has a header tank, and I have no idea regarding the limescale gadgetry fitted (if...

My PowerMax 155 boiler whistles for 2 – 5 mins every time the HW or CH program runs from cold. The whistling only occurs just before the boiler internal tank seems to reach its maximum operating temperature. The whistling then stops just before the burner turns itself off. Any ideas what the...