Mitsubishi Electric CITY MULTI PAR-40MAAU Installation Manual page 26

(6) Check
Select "Check" on the Service menu to bring up
the Check menu screen.
The type of menu that appears depends on the
type of indoor units that are connected (CITY
MULTI or M/P-series).
(When CITY MULTI is connected, only "Error
history" will appear in the menu.)
[Button operation]
1 Error history
Select "Error history" from the Check menu, and press the SELECT
button to view up to 16 error history records. Four records are shown
per page, and the top record on the first page indicates the latest error
record.
[Deleting the error history]
To delete the error history, press the F4 button (Delete) on the screen
that shows error history. A confirmation screen will appear asking if you
want to delete the error history.
Press the F4 button (OK) to delete the error history.
"Error history deleted" will appear on the screen. Press the RETURN
button to go back to the Check menu screen.
2 Other options in the Check menu (M/P-series only)
The following options are also available on the M/P-series units in the Check menu.
• Smooth maintenance
• Request code
These options are available only on the M/P-series units. Refer to the indoor unit Installation Manual
for details.
(7) Diagnostic function
Error history of each unit can be checked via the remote controller.
[Button operation]
1 Select "Self check" from the Diagnosis menu,
and press the SELECT button to view the
Self check screen.
2 With the F1 or F2 button, enter the refrigerant
address (M/P-series) or the M-NET address
(CITY MULTI), and press the SELECT
button.
3 Error code, unit number, attribute, and indoor
unit demand signal ON/OFF status at the
contact (CITY MULTI only) will appear. "-" will
appear if no error history is available.
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<CITY MULTI>
<CITY MULTI>