Electrolux Microwave F3 Error: Humidity sensor is malfunctioning.
Electrolux microwave f3 error — understanding this error code helps you decide on the right course of action for your Electrolux appliance. What Is Electrolux Microwave Error Code F3? Error code F3 on Electrolux microwaves indicates a malfunction in the humidity sensor, also known as the steam sensor. This component is mounted inside the cooking […]
Sometimes
DIY Fixable
From $140
Typical Repair Cost
30-60 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. The microwave is safe to use with manual timed cooking modes. Only sensor-based auto-cook and auto-reheat functions are affected by the F3 fault.
Can I reset the code?
Yes. A thorough cavity cleaning followed by a power cycle often clears the F3 code. If the sensor has failed, the code will return when sensor modes are used.
When to stop immediately?
Stop if you notice: Stop if the microwave produces any unusual smells, sparks, or smoke during operation., Do not attempt to remove any interior panels to access the humidity sensor..
Symptoms You May Notice
F3 shown on display
The microwave displays F3, particularly when sensor cook or auto-reheat is selected.
Sensor cooking modes overcook or undercook
Before F3 appeared, sensor-based programs may have been producing inconsistent results.
Manual timed cooking still works
Standard timed cooking modes operate normally, but sensor-dependent programs are unavailable.
Error appears after cooking steamy foods
F3 is more likely to trigger after cooking liquids, soups, or other high-moisture foods.
Possible Causes
Grease buildup on humidity sensor
Cooking splatter and grease have coated the sensor surface, preventing accurate moisture detection.
DIY PossibleFailed humidity sensor element
The sensor element itself has degraded and no longer responds correctly to changes in steam levels.
Requires ProfessionalLoose sensor wiring connection
The connector between the humidity sensor and the control board has loosened due to vibration or thermal cycling.
Requires ProfessionalSafe Checks You Can Do
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1
Clean the microwave cavity
Clean the entire interior with a solution of warm water and mild dish soap, focusing on the sensor area near the ceiling.
Heat a bowl of water with lemon juice for two minutes first — the steam loosens grease and makes cleaning easier.
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2
Dry the cavity completely
Leave the microwave door open for at least 10 minutes to allow all moisture to evaporate from the cavity.
A residual-moist cavity can produce false sensor readings that trigger F3.
-
3
Power cycle and test
Unplug the microwave for two minutes, then plug it back in and try a sensor reheat cycle with a cup of water.
If timed manual cooking works but sensor modes trigger F3, the issue is isolated to the humidity sensor.
When to Call a Professional
Contact a qualified technician if:
- The F3 code persists after a thorough cleaning and complete drying of the cavity.
- Both sensor cooking and manual cooking modes are affected.
- The microwave previously had accurate sensor cooking that has gradually become unreliable.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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