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- 19 Oct 2006
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Since restarting my central heating I have have noticed a sound, which sounds like knocking, also a kettling noise, these noises only appear as the boiler warms up , and will disappear when the correct temp is maintained.
The make is a Worcester Bosch 24i sealed system combi, and is is about 2 years old, and was serviced early this year.
I did add a couple of rads a year ago, but no problems occurred then, and I did try to flush through the new ones at the time.
All rads have been bled, and all heat up fine and quickly, even the farthest one, so I know the pump works, this also has been bled.
Does anyone have any suggestions please, as I don't want the boiler to incur damage, I am thinking of draining and flushing with cleanser, is it worth doing this a new so shouldn't be caked up with any lime/sludge , thanks in advance for any suggestions.
The make is a Worcester Bosch 24i sealed system combi, and is is about 2 years old, and was serviced early this year.
I did add a couple of rads a year ago, but no problems occurred then, and I did try to flush through the new ones at the time.
All rads have been bled, and all heat up fine and quickly, even the farthest one, so I know the pump works, this also has been bled.
Does anyone have any suggestions please, as I don't want the boiler to incur damage, I am thinking of draining and flushing with cleanser, is it worth doing this a new so shouldn't be caked up with any lime/sludge , thanks in advance for any suggestions.