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Asko Oven Error Code ERR4

ERR4 indicates a temperature sensor malfunction or heating element failure in your Asko oven. This error prevents the oven from reaching or maintaining the correct cooking temperature and requires troubleshooting to restore normal operation.

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Problems You May Notice

    • Oven fails to heat or heats inconsistently • Temperature display shows incorrect readings • Oven stops heating mid-cycle • ERR4 code appears on the digital display • Cooking results are undercooked or unevenly cooked • Oven may shut down automatically during use • Unable to preheat to selected temperature
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Possible Causes

    • Faulty oven temperature sensor (RTD probe or thermistor) • Broken or malfunctioning heating element • Damaged wiring connections between sensor and control board • Control board malfunction or sensor signal processing error • Overheating protection circuit triggered • Poor electrical connection at the terminal block • Corroded or loose connector pins on the temperature sensor • Failed relay or contactor preventing heating element activation
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Safety Checks You Can Do

    • Power cycle the oven: Unplug from the wall outlet for 60 seconds, then plug back in to reset the system • Ensure the oven door is fully closed and latches completely • Verify the cooking mode is correctly selected (convection, bake, or broil) • Allow the oven to cool completely if it overheated, then attempt to use again • Check that nothing is blocking the oven vents or preventing air circulation • Confirm the oven has adequate power supply and the outlet is functioning • Avoid using aluminum foil on oven racks or blocking interior vents • If ERR4 persists after a reset, avoid further oven use and contact a qualified Asko service technician for professional diagnosis and repair
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NOTE!

If the error code persists, call to schedule your service

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