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When the message of “Back-up” is displayed
When any error occurs on the OU but its operation is continued as an emergency measure, the message of “Back-
up” will be displayed.
When the period of use exceeds 10 years, the screen shown at left is
displayed.
When this screen is displayed, contact your dealer.
When the “Back-up” is displayed, contact your dealer immediately for
checking.
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If the operation is continued without checking, it could result in breakdown.
Notice of inspection date
If the next service date is set on the Service & Maintenance menu by your dealer, the following screen is displayed
for 5 seconds at the start of operation and for 20 seconds from the end of operation on the begining of the month
which includes the set date.
When this screen is displayed, contact your dealer.