Hansa oven selector knob feels loose, does not click into positions, or does not change functions reliably.

Safety first: Disconnect power before removing the control panel or knobs.

• Inspect knob: Pull off the knob and check for cracks or rounding of the shaft insert. Replace the knob if damaged.
• Check switch mounting: Tighten the nut or screws securing the selector switch to the front panel.
• Test switch contacts: With the switch exposed, use a multimeter to verify continuity between the correct terminals in each position. Replace the selector switch if contacts are intermittent or incorrect.

When to call a technician: If wiring to the switch is heat-damaged or if multiple functions are affected, professional repair is recommended.