Hitachi RAS-8FSXN - Control System

DSW5: emergency operation /test run and service setting
Setting not required. Activate only when the following functions are used:
• Contact 1: except No 1, compressor operation.
•
Contact 2: except No 2, compressor operation.
• Contact 4: Monitoring of refrigerant quantity.
DSW6: setting outdoor unit number
Setting required.
• 1: setting before supply:
N O T E
This combination of outdoor units must be set.
Setting for combination of units:
• A: unit 1 (main).
•
B: unit 2.
• C: unit 3.
21
ON
3 4
1
21
ON
3 4 21
ON
3 421
ON
3 4
A B C
DSW7: supply voltage setting
Setting not required.
400V
DSW10: communication setting
Setting required.
• A: setting before supply.
•
B: cancellation of final resistance.
N O T E
• C: If
the communication circuit fuse has opened, the PCB1 board can
only be recovered by activating contact 2.
C
21
ON
21
ON
A
21
ON
21
ON
A
B
21
ON
B
21
ON
4 Electrical wiring
80
SMGB0065 rev. 1 - 12/2010