49
Electric wiring and the application
SW9 SW10 SW11
Function
Operation
15
9
2
When master unit is
operating in heating
mode, the fan speed
setting of Thermo OFF
slave units
0: not running
1: running
15
10
2
Drop selection
between outdoor and
indoor
0: no drop
1: with drop
15
11
2
Setting of outdoor
mode and indoor
priority (not available
for 3 pipes mode)
LD1: outdoor mode 0- normal, C- cooling only, H-
heating only, U-VIP
LD2
：
“-”
LD3/LD4
：
indoor priority setting (valid when
outdoor mode is normal or VIP)
00--First in first out
01--Last in first out
02--Cooling priority
03--Heating priority
04--Majority priority
Eg, “0-03”: heating priority
“C---”: cooling only
15
12
2
Power supply check
50Hz/60Hz setting
50: 50Hz
60: 60Hz
15
13
2
Inverter board
selection
0: self-made
1: APY
15
14
2
Outdoor model setting
0- 3 pipes model
1-MX6-S model
2- Water Cooled VRF
15
15
2
Reserved
1
0
2
Communication baud
rate of indoor and
outdoor units
9600bps
1
1
2
1 round circulating
VB and correct
communicating qty of
indoor units
LD1/ LD2
：
qty of VB (3 pipes model)
LD3/ LD4
：
qty of indoor units
Eg, 0206 represents 2 VB and 6 indoor units
1
2
2
2 MSB
：
percentage
of inconsistent qty
between indoor and
E2
2 LSB: qty of actual
indoors
Eg,0522: qty of actual indoors is 22;
communicating inconsistent percentage
between indoor and E2 is 5%
1
3
2
Qty of indoors which
can communicate with
VB (indoors failed 5
successive rounds are
excluded)
LD1/ LD2
：
qty of VB (3 pipes model)
LD3/ LD4: qty of indoor units
Eg: 0206 represents 2 VB and 6 indoor units.
1
4-15
2
Reserved
