Steam-assist or combi-steam oven mode not working; F15 displayed on steam models

Safety first: Turn off power and allow the oven and steam system to cool completely before servicing. Hot steam can cause severe burns.

• Step 1 – Check water supply: Ensure the steam water reservoir is filled or the plumbed water line is turned on, depending on model.
• Step 2 – Descale system: Run the manufacturer-recommended descaling cycle using approved descaling solution to remove mineral buildup.
• Step 3 – Inspect steam generator: With power off, access the steam generator module (usually behind a side or rear panel). Check for leaks, corrosion, or burnt wiring.
• Step 4 – Test heater and sensor: Using a multimeter, test the steam generator heater for continuity and the steam temperature sensor for proper resistance. Replace any open components.
• Step 5 – Control and wiring: Verify all connectors to the steam module are secure. If components test good but F15 persists, the steam control board may be defective.

Warning: Steam systems are complex; if you are not experienced with high-temperature, pressurized systems, contact a qualified technician.