45■ Note on powering the system downAlways use the following procedure to power the Web Interface off:Click on Power off on the “Other settings” screen.When “Exit this program ?” is displayed, click on OK ,Wait until a message appears to inform you that “It is now safe to turn off the unit.”*then power the system down.(*It may take several minutes until this message appears.)■ Only an alarm code is displayed to notify of alarm content of air conditioners.The content of an alarm can vary for different models, even if the alarm code is the same.Refer to the documentation of the various models to determine the content of the alarm.■ If errors occurred because of lightning or electromagnetic interferenceTurn the Web Interface off then back on again.(See “Note on powering the system down” above.)As a rule, the Web Interface should be powered down only in cases such as the above.Correct management of air conditioners is not possible when the Web Interface ispowered down.■ Note on setting the current date and timeThe current date and time should be set on a regular basis, since the system clock cangain or lose up to about two minutes per month (at 25 ).■ You cannot perform Web operations from the PC while the Web Interface is undergoingthe processes described below. Wait until that process is completed, following theinstructions displayed on the screen.• During startup (after turning the Web Interface on)• During a system confi guration check• During initialization• During the power-down process• 23:30–0:05 daily■ When only one centralized control unit is installed in a system without a remotecontroller, if the centralized control unit is damaged, the air conditioner(s) may becomeinoperable, or other troubles may occur.To avoid this problem, we recommend that you use remote controller(s) or installmultiple centralized control units.■ About passwordsLogin passwords should be recorded and saved in a safe place. They should never bedisclosed to third parties.If you forget your login password, contact your dealer or service provider.We will not be liable for any disadvantage caused by disclosure of login passwords tothird parties.10 Supplementary Information