Initialization Procedure For System Rotation Settings - Mitsubishi Electric PUHY-P250YNW-A Service Handbook

[6-5 Initialization Procedure for System Rotation Settings ]

6-5 Initialization Procedure for System Rotation Settings
1. Summary
This document is to inform how to do the setting for system rotation function, and procedures for
service/maintenance when the units in system rotation.
2. Items to be checked at commissioning
Following are items to be confirmed at initial setting and commissioning.
(1) Install
1) Change connecter from CN41 to CN40 for switching power feeding.
2)
Confirm the label on control board in indoor unit 'KE90D352'.
3)
Confirm that IU addresses are sequence number (Odd only).
(2) Setting
1)
Make group setting after the setup sequence for all units have been completed.
2) Turning DipSW5-10 from OFF to ON on the lowest address outdoor unit in the group
while the unit is stopped.
3) Change SW9 from 'Local' to 'Normal' after switching running/stopping mode by MA
remote controller.
(3) Test run
1) Run control unit only in test run mode, and run other units in normal mode.
*Rotate time will be changed from 480hr to about 3min.
*Test rotation will be performed only once.
(4) Deliberate error
1) Remove transmission line TB7.
After detecting error, backup unit will begin to run immediately.
Start condition of system rotation
Initial setup sequence for all units in the group have been completed.
All units are running.
There is no error detected in the group.
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chapter 6 BS_06_C