At the back of the hall is a small side-room, used for serving food , which has a small fan mounted in a hole in the wall.
If we are only using the small fans, then the 'Vent-Axia' extractor fan in the 'Pantry' can be switched on, to help remove warm air. Turn the knob to 'III' or '3 O'Clock'.
If the large fan is sucking air out of the hall, then it would be a bad idea to try to compete with it by switching this small, weak fan on - better to leave it off, and it will 'windmill' or 'freewheel' backwards, allowing cool air to enter.
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