Potterton 24 HE - whistling noise?
Hi,
My boiler makes a high-pitched whistling sound when the central heating is off.
It does it during the night as some kind of regulation cycle every 2 or 3 hours and also after I turn off the hot water tap.
It does it for about 5 mins and is driving me crackers!!!
Any ideas? Thanks in advance
Martin January 2010 |