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I know this is an old thread but maybe someone will be useful to what I discovered.
I had exactly the same problem as @Varu, i.e. battery error 22 after restart, and when the reader was sometimes able to start, the display worked very slowly. In the logs I found exactly the same errors regarding the lack of display temperature reading. In my case, the system set the default reading at -10 ° C (14 ° F), which I guess was the reason for the very slow operation of the display.
I found on the internet that the ED060XD4 display has a built-in 10k thermistor on pins 30-31.
When I looked at my display under the microscope, the cause of the problem appeared immediately - the temperature sensor was torn off. I don't know how it could happen because my reader was never taken apart.
After repairing the connections, everything works as it should, no errors.
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