Haier CA0035EAND, Service Manual, Page: 30 / 66

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5. Connection of Communication Wires
Handest
Master unit of
modular
Slave unit of
modular 1
Slave unit of
modular 2
Slave unit of
modular N
2
+12V
Output wiring terminal Output wiring terminal
Isolating wires ground
Output wiring terminal Output wiring terminal
+12V +12V
+12V +12V
GND
GND GND
GND GND
A1
A1 A1
A1 A1
B1
B1 B1
B1 B1
Red Red Red Red Blue Blue Blue Blue Yellow Yellow Yellow Yellow Green Green Green Green
RS485-A RS485-A
RS485-A RS485-A
CN19 CN19 CN19 CN19
Conductir
(Tinned cooper wire, twisted, with
the cross-sectional area at least
0.5mm² or 20AWG)
Shielding layer
(Tinned cooper wire, twisted
or braided, witn the shielding
ratio at least above 95%)
Insulator
Outer sheath (PVC)
Description:
1. The network connecting wires with compact shielding layer and small lay of twisted conductors shall be selected
to the greatest extent.
2. Refer to UL2547 or UL2791 wire standards.
3. The length of control wire shall not exceed 1000 m.
4. The control wire routing must be more than 200 mm away from the heavy-current installations.
4. Requirements for Communication Wires
6. Address Code Setting
The former four digits of the eight-digit code switch are for module address setting, and the latter four for unit mode
and capacity setting. The unit mode and capacity codes have been set in delivery, and they are unchangeable.
The unit address codes default to ON, ON, ON and ON (for master unit), and in delivery, the codes default to 0N,
0N, 0N and 0N.
The former four digits are available for module address:
Address No. SW1 SW2 SW3 SW4
0 ON ON ON ON
1 ON ON ON OFF
2 ON ON OFF ON
3 ON ON OFF OFF
4 ON OFF ON ON
5 ON OFF ON OFF
6 ON OFF OFF ON
7 ON OFF OFF OFF
8 OFF ON ON ON
Address No. SW1 SW2 SW3 SW4
9 OFF ON ON OFF
10 OFF ON OFF ON
11 OFF ON OFF OFF
12 OFF OFF ON ON
13 OFF OFF ON OFF
14 OFF OFF OFF ON
15 OFF OFF OFF OFF
Note:
(1) There is no same address code in one system.
(2) The above address codes must be set by professionals.