Hitachi UTOPIA RAS-3HVRC2 Bedienungsanleitung Seite 32

ELECTRIC WIRING
10.2 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNITS
The electrical wiring connection for the outdoor unit is shown in
figure below:
L1
   
Instructions for wiring and electrical board:
Power wires
10.2.1 Setting of DIP switches for outdoor unit

Quantity and position of DIP switches
The PCB in the outdoor unit is operating with 7 types of DIP
switches, and 4 push switches. The location is as follows:
PCB1

DSW1: No setting is required
When set pin number 1 to ON, the electric
current detection is cancelled. Pin number
1 should be set back to OFF after electrical
work.
12 PMML0548 rev.0 - 04/2020 - A10648790A
L2
1 2
N
PCB
Earth terminal
Side cover
Transmission
wires
PCB2

DSW301: Test run mode
Setting before shipment
Cooling
Heating
Forced stop of compressor

DSW2: Optional function setting
Factory setting
Optional function setting
External input / output setting mode
Annual cooling

DSW3: Capacity Setting (No setting is required)
Setting position

DSW4 / RSW1: Refrigerant cycle number setting
(Setting is required)
Setting for the tens digit
Setting position
Set by inserting slotted screwdriver into the
groove (setting for the last digit)

DSW5: End terminal resistance (No setting is
required)
Setting before shipment