Powremaxx 155. LOUD WHISTLE!

13 May 2006
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United Kingdom
Powermax 155 Boiler.
My boiler has started to make a loud whistling noise when the burner is on. It is loudest from the outside flue outlet but can also be heard in the boiler cupboard. It is getting louder by the day.
I called in my local Corgi man who said it was a gasket problem which costs £170 to buy, plus installation!
HELP! :cry:
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Think he must have meant £1.70 :!: , they can be a bit of a pain to change though. It could also be the air / gas mix or even corroded baffles.

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