Setting Of Dip Switches - Hitachi CH-Box Installation Manual

6.4 Setting of DIP Switches
DSWs on the PCB1 are set before shipping as shown below and no setting is required.
Connection Ports
for Indoor Unit
A B C D
PCB1
DSW1
DSW2
DSW3
DSW5 DSW6
DSW4
DSW7
DSW8
DSW1 DSW2
This setting is required.
When the connection port is not used, turn ON
No setting is required.
the applicable pin shown in the table 6.2.
ON ON
1 2 3 4 5 6 1 2 3 4
The "n" mark indicates the position of DIP switches. Figures show setting before shipment.
All indoor and outdoor units must be shut down prior to attempting to make DIP Switch adjustments,
otherwise, the settings will not take effect.
24
M N O P
Table 6.2 Cross reference table of DIP switch settings and connection ports for indoor unit.
PCB4
DSW1
DSW2
DSW3
Connection ports for indoor unit
PCB No.
DSW5 DSW6
DSW2 Pin No.
DSW4
DSW7
DSW5~8
DSW8
Connection Port Setting DSW3
No setting is required.
(Example)
When connection port "D" is
not used, turn ON
DSW2-No.4 pin on PCB1.
NOTICE
Models
CH-AP04MSSX
JCH-AP04MSSX
A B C D
PCB1
1 2 3 4
DSW DSW DSW DSW
5 6 7 8
DSW4~8 Fuse Recover
In the case of applying high voltage to terminals of TB2, TB3 or TB4, the 0.5A
fuse on the PCB is open. In such a case, first reconnect the wiring correctly
to the terminal block, and then set the No.1 pin to ON.
DSW4 (for TB2)
Factory Setting Fuse Recover
ON
ON ON
1 2
1 2 1
NOTE
CH-AP12MSSX
CH-AP08MSSX
JCH-AP12MSSX
JCH-AP08MSSX
E F G H I J K L
PCB2 PCB3
1 2 3 4 1 2 3 4
DSW DSW DSW DSW DSW DSW DSW DSW DSW
5 6 7 8 5 6 7 8
DSW5~8 (for TB3 and TB4)
Factory Setting Fuse Recover
ON ON
2 1 2 1 2
P5417025-rev.1
CH-AP16MSSX
JCH-AP16MSSX
M N O P
PCB4
1 2 3 4
DSW DSW DSW
5 6 7 8