E21
Zanussi
Air damper or fridge airflow control fault
Display shows E21 and the fridge compartment is too warm while freezer seems normal
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Stuck or broken air damper between freezer and fridge, Ice blockage around damper, Failed damper motor, Faulty damper position sensor or wiring
How to Fix / Troubleshooting
Safety: Unplug the refrigerator before removing internal covers.
Diagnosis:
- Locate damper: The air damper is usually in the upper rear of the fridge compartment, where cold air enters from the freezer.
- Inspect vent: Remove the plastic cover and check for ice or debris blocking the vent. Defrost any ice gently.
- Check damper movement: With power off, see if the damper flap moves freely. A broken flap or gear requires damper replacement.
- Electrical test: If accessible, check the damper motor connector and wiring. Look for loose plugs or corrosion.
- Replace damper assembly: If the damper is stuck, noisy, or not moving when the fridge calls for cooling (requires powered test), replace the complete air damper assembly.
Note: Some models integrate the damper into a larger air distribution housing; ensure you order the correct Zanussi part.
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Repair Difficulty
Medium
3/5
Required Part
Fridge Air Damper Assembly
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