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An H, or a lit dot: the zone is off and still hot enough to burn.
Also known as: H on a hob, Hot surface indicator, Red dot on a ceramic hob
The one hob marking that is a warning rather than a control. A ceramic or induction surface gives no visual sign of heat, so an indicator reports what the eye cannot: the zone is switched off and still dangerous.
An indicator, usually a letter H or an illuminated dot, showing that a hob zone remains hot after being switched off.
What a given programme actually does is in the appliance's own instructions. The symbol names the function; the manufacturer decides how it behaves.
Contexts: Electrical equipment
Exists because a smooth hob gives no visible cue. A gas flame is obvious and a glowing radiant ring is obvious; a ceramic surface at two hundred degrees looks exactly like a cold one.
On induction, the glass is heated only by the pan rather than by the appliance, so a residual heat indicator after induction cooking is reporting heat transferred back from the cookware.
A capital H in a small illuminated display, or a single round red indicator lamp — a filled circle a few millimetres across — set into the control panel beside a zone.