Oven display shows F30, often associated with steam or combination ovens where humidity is used.

Safety first: Disconnect power and allow the oven to dry completely if recently used in steam mode.

• Locate humidity sensor: In Asko combi-steam ovens, the humidity sensor is typically mounted in the cavity wall or duct. Refer to the service manual for exact location.
• Inspect for corrosion: Remove the sensor and check the connector and pins for corrosion or mineral buildup. Clean gently and dry thoroughly.
• Test sensor (if specs available): Measure resistance or voltage output according to the service documentation. Replace the sensor if readings are out of range.
• Check harness: Inspect the wiring from the sensor to the control board for damage from heat or moisture. Repair or replace as needed.
• Control board: If a new sensor and good wiring still result in F30, the control board sensor circuit may be defective and require replacement.