Note : Ex): When "Maintenance Request C00" is displayed.
As "C00" in hexadecimal means "0000000000000000000110000000000" in binary, you can find out the code is assigned to Bit-11 and Bit-12 referring to the above table.
In this case, two errors are occurring simultaneously. (Bit-11: out of battery/ Bit-12: the date/time not set.)