F4
Candy Gas Valve or Stepper Motor Fault (for electronic valves)

Gas hob shows F4 and one burner cannot be adjusted properly (stays high or low only)

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 electronic gas valve, Jammed valve spindle, Faulty control PCB output for that burner

How to Fix / Troubleshooting

Safety first: Turn off gas and power before any work. Gas components must be handled by qualified personnel.

  • Check mechanical knob: Ensure the control knob is not cracked or slipping on the valve shaft. Replace knob if damaged.
  • Inspect valve movement: With gas off, turn the valve shaft by hand (if accessible) to feel for stiffness or jamming. A stiff valve should be replaced.
  • Electronic valves: On models with electronic modulation, verify the wiring to the valve actuator or stepper motor. Reseat connectors.
  • Replace valve assembly: If F4 persists and the burner cannot be controlled, replace the gas valve assembly for that burner.
Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Gas Burner Valve
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements