F4
V-ZUG Glass Ceramic Surface Temperature Sensor Fault

Induction hob or radiant cooktop shows F4 and may shut down one or more zones.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Defective NTC sensor under glass, Sensor wiring damaged or disconnected, Faulty input circuit on main control board, Moisture ingress around sensor area

How to Fix / Troubleshooting

Safety first: Disconnect from mains. Allow the glass to cool completely before performing any work.

User checks:

  • Wipe the glass surface dry and remove any liquid spills that may have seeped near the sensor area.
  • After cooling, restore power and test again. If F4 reappears immediately, a component fault is likely.

Technical checks (qualified person only):

  • Access the underside of the hob and locate the NTC temperature sensor(s) attached to the glass or the radiant element.
  • Check the sensor connector for corrosion or a loose fit.
  • Measure the resistance of the NTC at room temperature and compare it with V-ZUG specifications.
  • Inspect the harness from the sensor to the main control board for damage.
  • If the sensor and wiring are OK, the fault may be in the main control board input circuit.

Repair: Replace the faulty NTC temperature sensor or, if confirmed, the main control board. Always refit thermal pads or clips exactly as original to ensure correct temperature sensing.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Glass Surface NTC Temperature Sensor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements