Philips GC4444 Bedienungsanleitung Seite 17

Question
Why does the
iron make a
humming sound?
Answer
The Ionic DeepSteam function is on. If you hear the
humming sound when you iron without steam,
stop pressing the Ionic DeepSteam button.
The Ionic DeepSteam function has no effect when
you iron without steam.
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