Hisense YXE-A03U Technical & Service Manual page 97

Control Box(B541(E))
4.
fig. 1 Connection with indoor unit by communication line
② Connection of central control communication line.
As shown in fig. 2, press the connection terminal for central control and insert the communication line
for central control into the connecting hole. Then release the terminal until the communication line is
properly inserted.
NOTE:
1. The above requirement for wiring is the minimum;
2. The central control communication line should be provided by users;
3. Correct polarity of the communication line should be ensured during connection;
4. The connecting cord should be reliably secured after connection is completed.
3. Setting of DIP Switches
Please set DIP switches according to the actual conditions. Settings after power on will not take effect.
Methods for setting DIP switches:
Before setting, slide down the cover on the central control box to set the DIP switches.
After setting, reinstall the cover to the central control box.
ON ON ON
OFF OFF OFF
SW1 SW2 SW3
NOTE:
Symbol " " indicates the position of the DIP switch.
Please refer to Table2 for the figure fo Address 1~16.
4. Securing the central control box
If necessary, use double-faced adhesive tape to secure the central control box onto the indoor unit after
installation.
Connector for communication
line of indoor unit
Hook for fastening
of wiring harness
Central control
twisted pairs
communication line
Fig. 3 Methods for setting DIP switches
ON
DIP Switch
OFF
SW1-1
SW4
SW1-2
SW2
SW3
SW4
fig. 2 Connection of central control communication line
Type Minimum Specifications
Shielded Cross-sectional area:
2×0.75 mm
Sliding cover
Description
Set the position of the switch to "ON" when the fuse
Setting when on the electronic control board of central control
fuse operates box operates to disconnect the circuit so as to
restore the fuse.
Setting for
Be sure to set the position of the switch on either
terminal
end of the central control system to "ON".
resistor
SW2: for setting high address (when more than 16
indoor units are used);
SW3: for setting low addresses.
Range of addresses: 1-64
Setting of
00000001: 1~01000000:64
addresses
ON ON
OFF OFF
2
00000001(address:1)
00 9600bps (by default), 01: 19200bps,10:38400bps
Baud rate should be the same with the central
controller.
Setting of
ON
baud rate
OFF
4
00 9600bps (Default setting)
95
Central control communication line
pressure wire terminal
Central control
communication line
A+ B- B-
A+
2
Setting Method
ON ON
... OFF OFF
3 2 3
01000000(address:64)
ON ON
OFF OFF
4 4
01: 19200bps 10: 38400bps