Steam oven shows F16; no steam is produced even though heating may work.

Safety first: Turn off power and let the appliance cool fully before accessing the steam generator.

Step-by-step checks:

• Descale first: Run the full descaling program to remove limescale that can cause overheating and element damage.
• Access steam generator: Remove side or top panels as per service instructions to reach the steam boiler and heater terminals.
• Continuity test: Disconnect the heater leads and measure resistance. An open circuit indicates a failed heater.
• Check thermal cut-out: Some generators have a resettable thermostat. Press the reset button if present. If it trips again, investigate for limescale or poor water flow.
• Replace steam heater: If defective, replace the steam generator or heater assembly with the correct V-ZUG part.

When to call a technician: Steam system repairs involve pressurized hot water and should generally be performed by an authorized technician.