A loose outer knob, a stiff control and a display that ignores a selection are different faults. The printed control function is more useful than its colour or position alone.
Say whether the knob turns freely, will not turn or moves but changes nothing. Include any cleaning or removal immediately before the change without assuming that caused it.
Similar knobs can have different fittings and functions. A complete model and clear photograph can prevent an unsuitable part enquiry. Do not force a control or use a tool to turn its exposed shaft.
A cooker can combine a gas hob with electric ovens or use another arrangement. Its appearance does not reliably establish the fuel of each function.
Read the guide ↗CookerA selector chooses a cooking function; the cavity then needs the relevant heating arrangement to operate. A symptom at either stage may feel like the whole oven.
Read the guide ↗CookerDoor glass removal or refitting can alter the way a door feels without establishing that a hinge has failed. The exact work and current gap matter.
Read the guide ↗