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My Mistral MSS25 dosn't blow hot air and makes a whistle noise when it's trying to heat up and when you turn it off? Any idea what the problem would be? It does heat the air but only to about

\015 I have just purchased a new home and the unit won't heat properly. I was under the impression that you just need to turn it on and the unit will adapt to the correct setting judging on the temprature of the room. It will heat the air slightly but not to the point where the room is warm. This still dosn't happen when I manually set it to heat mode. When it stops to reheat there is a whistle noise that comes out of the unit and I'm not sure what it would be? Any help would be appreciated!!\015 Posted / edited by AnonymousUser on : 29-06-2020

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