E3
Blomberg
Ambient Temperature Sensor Failure
Display shows E3 and the wine cooler temperature is inaccurate or fluctuates widely.
Advertisements
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.
Advertisements
Possible Causes
Failed ambient NTC sensor, Sensor disconnected from control board, Wiring harness damage near front display, Faulty main PCB
How to Fix / Troubleshooting
Safety: Disconnect power before removing the control panel or display trim.
- Locate ambient sensor: On many Blomberg wine coolers, the ambient sensor is near the front grille or behind the control panel to measure room temperature.
- Inspect wiring: Remove the front kick plate or control panel trim. Look for a small sensor probe with two wires. Check for loose connectors, corrosion, or broken wires.
- Test sensor: Use a multimeter to measure resistance at room temperature. Compare to typical NTC values. If the reading is open or shorted, replace the sensor.
- Replace sensor: Install a compatible Blomberg ambient NTC sensor, secure it in its original location, and reconnect to the main PCB.
- Check PCB: If the sensor and wiring are good but E3 remains, the main control board may have a defective sensor input and should be replaced.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Ambient Temperature Sensor (NTC)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements