Continuous clicking of igniters on Ariston gas cooktop even when all knobs are off.

Safety: Turn off power to the cooktop to stop the clicking. Close gas supply if you smell gas.

• Dry the hob: If the issue started after a spill or cleaning, allow the hob to dry for several hours. Use a hair dryer on low (power off) around the knobs and electrodes.
• Check knobs: Remove the control knobs and inspect the ignition microswitches. Ensure none are stuck in the pressed position. Clean and dry around them.
• Test switches: With power off, use a multimeter to check each switch for proper open/closed operation when pressed.
• Replace faulty switch: If one switch is permanently closed, replace that ignition switch.
• Spark generator: If all switches test correctly but clicking continues when powered, replace the spark generator module.