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6
GROUP REGISTRATION
CAUTION:
- If "RESET" switch is pressed or any switch is not pressed for more than 30 seconds, group
registration mode is changed to the normal mode automatically. In this case, group
registration is not available.
- Check to ensure that the same unit No. setting is not performed when two or more controllers
are connected. In this case, it is necessary to set the controller address No. from the smaller
unit No. If this procedure is not performed, the alarm code "E002" may occur. At that time,
correct address No. of the controller having "E002" alarm code at first.
Example
1. Set address 1 on controller (add.1) for units Nos. 1 to 4.
2. Set address 2 on controller (add. 2) for units Nos. 4 to 7.
3. After setting group registration, "E002" alarm occurs in the controller address No. 2.
4. Correct the setting of the controller address No. 2 unit at Nos. 5 to 8.
5. "E002" alarm is cleared.
Controller
Controller
Address 1
Address 2
Chiller Unit
1
2
3
4
5
6
7
8
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