Hello, Have you pressed and held the tiny reset button underneath the display using a paperclip for 8 full seconds and released? If not, can you please try that and let me know what happens?
Resetting the microprocessor By pressing RESET, you can reset the microprocessor to its initial settings without changing the bookmark information. The microprocessor must be reset in the following situations: ! Before using this unit for the first time after installation ! If the unit fails to operate properly ! When strange or incorrect messages appear on the display
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