Hitachi UTOPIA RAS-4HVRP2E Installations- Und Betriebshandbuch Seite 46

Electric wiring
10.2.1 Setting of DIP switches for outdoor unit
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Quantity and position of DIP switches
The location is as follows:
RAS-(4-6)HV(R/N)(C/P)2E (PCB2) RAS-(4-6)H(R/N)(C/P)2E (PCB1)
Display
(7SEG)
DSW3
DSW2 DSW6
DSW4 DSW1
SEG1
PSW1 PSW2 PSW3
RSW1
DSW7
DSW1 and PSW can be operated while power source is ON.
It may take up to 20 seconds for the change of operation state
(RUN/STOP) to be effective after having set DSW1.
!
C A U T I O N
Before changing the settings of the DSWs, the voltage supply should be
disconnected. Otherwise, the new settings will not be valid.
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DSW1: For test run
Factory setting
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DSW2: Optional function setting
Factory setting
Piping length ≤ 5m
Piping length ≥ 30m
Control to support existing pipes or when using
Ø19,05 gas pipe (soft-annealed), switch ON
DSW2 pin 4 in the outdoor unit PCB
Optional function setting mode
(The optional function selection mode
becomes available)
External input/output setting mode
(The input / output signals selection mode
becomes avaliable).
15 PMML0545 rev.2 - 04/2021
Display
(7SEG)
DSW1
SEG1
DSW2
PSW1 PSW2 PSW3
DSW3
DSW4
RSW1
DSW7 DSW6
DSW5
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DSW3: Capacity
Factory setting
RAS-4HV(R/N)(C/P)2E RAS-5HV(R/N)(C/P)2E RAS-6HV(R/N)(C/P)2E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
RAS-4H(R/H)(C/P)2E RAS-5H(R/N)(C/P)2E
ON ON
1 2 3 4 5 6 1 2 3 4 5 6
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DSW4 / RSW1: Refrigerant cycle number setting
Factory setting
(Setting for the tens digit)
Factory setting
(Setting for the last digit)
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DSW5: Transmission setting of end terminal
resistance
Factory setting
Cancellation
In the case that the outdoor units quantity in the same H-LINK
is 2 or more, set No. 1 pin of DSW5 at "OFF" side from the 2nd
refrigerant group outdoor unit. If only one outdoor unit is used,
no setting is required.
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DSW6: Not used
RAS-(4-6)H(V)(R/N)C2E
Factory setting
(Do not change)
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DSW7: Not used
RAS-(4-6)H(V)R(C/P)2E
Factory setting
(Do not change)
ON
1 2 3 4 5 6
RAS-6H(R/N)(C/P)2E
ON
1 2 3 4 5 6
0
RAS-(4-6)H(V)(R/N)P2E
RAS-(4-6)H(V)N(C/P)2E