E11
Bosch
Lower Zone Temperature Sensor or Control Failure
Display shows E11 and the lower zone of a dual-zone Bosch wine cooler does not cool correctly
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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
Defective lower compartment NTC sensor, Loose sensor connector on main PCB, Damaged wiring harness to lower zone, Faulty dual-zone control logic on main board
How to Fix / Troubleshooting
Safety: Disconnect power before accessing interior panels or the control board.
Steps to address E11:
- Verify zone separation: Ensure the divider between upper and lower zones is properly installed and not blocked by bottles.
- Locate lower zone sensor: The lower zone NTC sensor is typically mounted on the rear wall or near the evaporator for that zone. Remove lower shelves and interior panel as needed.
- Inspect and test sensor: Check for physical damage to the sensor and wiring. Measure resistance at room temperature and compare to Bosch specifications. Replace if readings are abnormal.
- Check connections: Trace the sensor harness to the main control board and reseat the connector.
- Control board diagnosis: If the sensor is good and wiring intact, the dual-zone control circuitry on the main PCB may be faulty and require replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Lower Zone NTC Temperature Sensor
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