Mitsubishi Electric CITY MULTI MA PAR-41MAA Instruction Book page 77

Checking the error information
While no errors are occurring, page 2/2 of the error
information (refer to page 75) can be viewed from
the menu operation.
Select "Maintenance" menu from the Main menu, and
press the button.
SELECT
To display the error information screen, select "Error
information" from the Maintenance menu.
Errors cannot be reset.
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