I have a Powermax 355 boiler with built in timer. Every morning it starts up to heat water and central heating. After just a few minutes it starts making a loud whistling noise. This noise lasts for about 20 - 25 mins when it gradually fades away then stops - although the boiler remains on as the thermostat has not yet turned it off. Anyhow I no longer need an alarm clock to wake me up in the morning! It works ok though - water and radiators get hot. At first I thought it may be kettling which I have read about but surely this can't be the case as the noise starts almost straight away after it has switched on. The other strange thing is that it doesnt often make any noise when it comes on in the evening. I have, however, heard the same noise coming from 1 or 2 other peoples houses in the street - yes its that loud! All houses are the same, probably with the same boiler.
The boiler is about 5 years old and was recently serviced. It made the same noise before and after the service. I have also recently had the pump replaced and some long rods of metal about 1.5 feet long (whatever they are but the old ones were rusty and some had broken). The pressure is currently 1 bar.
Please help!
The boiler is about 5 years old and was recently serviced. It made the same noise before and after the service. I have also recently had the pump replaced and some long rods of metal about 1.5 feet long (whatever they are but the old ones were rusty and some had broken). The pressure is currently 1 bar.
Please help!
