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  • Janet Ferrao

Eppendorf 5415R Error 20

Updated: May 2, 2022

Temperature sensor error displayed as soon as you turn on the centrifuge.

This error is related to the sensor inside the rotor chamber.

If this error is displayed as soon as you turn on the centrifuge.

Check the connection between the sensor and the display board.

With your DMM... measure 6.0 k Ohm across the red and blue wire. With warmth applied to the temperature sensor the resistance will slowly drop.

Also check the connection to the Display PCB .

With your calibrated DMM check the continuity from the grey connection to the display board.


If no continuity is measured, repair or replace this wire connection.


With your DMM... you should measure 6.0 k Ohm across the marked two pins..

if you warm up the Temperature sensor by placing you fingers over the sensor. The resistance across the sensor will drop as the sensor temperature rises.

If you cannot obtain the above measurement, repair or replace your cable connection.

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4 Comments


Don Settergren
Don Settergren
Aug 12, 2021

Do you know the part number for the sensor? Hopefully a common part! Thanks!

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Don Settergren
Don Settergren
Aug 13, 2021
Replying to

I was told by the Eppendorf call center that the 5415 was obsolete and they could provide no information. I suspect you have a deeper contact - maybe an engineer. Wow, that would be cool!!! Good luck and thanks!

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rgmorris86
Jun 08, 2021

Thanks for this tech tip works fine now that cable is plugged in correctly in this case !

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