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What should I do to solve the "memory full" display problem on an ITM multifunctional time switch, part number 15270.

ITM multifunctional time switches (part number 15270) sometimes display "memory full" even when nothing or next to nothing has been programmed.

This is an internal memory fault that is not serious, and completely erasing all programs saved will not be sufficient to resolve the issue. A complete "reset" of the device must be carried out.

Enter code 753 (instead of 111) in the "programming" menu on the confirmation request, change the default "no" to "yes" and briefly disconnect the device, then reprogramme the language, date and time, etc.
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