Clean the sensor lens of dust or debris. Ensure the speed encoder disc on the motor shaft is clean and properly aligned. Error 21: Refrigeration / Temperature Sensor Fault
: Professional inspection by trained Technical Service for the centrifuge, rotors, and accessories. Troubleshooting Common Error Codes
Tilt the upper housing upward carefully, minding the ribbon cable connecting the display board.
Clean the sensor lens of dust or debris. Ensure the speed encoder disc on the motor shaft is clean and properly aligned. Error 21: Refrigeration / Temperature Sensor Fault
: Professional inspection by trained Technical Service for the centrifuge, rotors, and accessories. Troubleshooting Common Error Codes Eppendorf Centrifuge 5424 R Service Manual
Tilt the upper housing upward carefully, minding the ribbon cable connecting the display board. Clean the sensor lens of dust or debris