Hi all,
Friend has a powermax 155, and he reports that in the morning when the system fires up a really high pitched singing noise eminates from the boiler for about 20 mins then disappears miraculously. Can anyone give us a clue before we call out the specialists.
It also happens in the evening on start-up as well. Any checks that need to be done, the water delivery and CH work fine by the way
Many thanks, in anticipation,
Friend has a powermax 155, and he reports that in the morning when the system fires up a really high pitched singing noise eminates from the boiler for about 20 mins then disappears miraculously. Can anyone give us a clue before we call out the specialists.
It also happens in the evening on start-up as well. Any checks that need to be done, the water delivery and CH work fine by the way
Many thanks, in anticipation,