32
Electric wiring and the application
BM4 introduction
BM4_1 Drop selection of indoor units Default is 0; 1 is forbidden.
BM4-2 Stopped fan operation setting
when heating host is running Default is 0; 1 is forbidden.
BM4_3 Static pressure setting of
outdoor unit
0
Highest speed is 14 for outdoor
unit fan.
（
default
）
Local
class
1
Highest speed is 14 for outdoor
unit fan. (static pressure: 82Pa)
BM4_4
BM4_5
BM4_6
BM4_7
BM4_8
Pre-set
No definition
BM5 introduction
BM5_1
~
BM5_4
Outdoor motor
selection
BM5_1
BM5_2
BM5_3
BM5_4 Selection item
1
1
0
0
Dual fan motor(375W)
0
0
1
1
Single fan motor(750W)
BM5_5
~
BM5_8
Inverter board
selection
BM5_5
BM5_6
BM5_7
BM5_8 Selection item
0
0
1
1
180° inverter board
Monitor tools
Monitor code is as following:
Press button: SW2(UP), SW1(DOWN) are the button swicthes
Rotary switch: SW9, SW10, SW11 are setable from 0 to 15.
( Note: on code wheel with letters, A for 10, B for 11, C for 12, D for 13, E for 14, F for 15)
Display part: LED1, LED2, LED3, LED4, 4 digital tubes are ranked from left to right.
Display contents are as follow:
1. Indoor unit parameters observation
The parameters of indoor unit address 1-64 can be observed: SW9 and SW10 are indoor unit
numbers; the range of SW11 is 3-14, regarding indoor unit parameters.
SW9 SW10 System address
0
0-15
Unit 1-16
（
indoor unit PCB address dial-up 0#-15#
）
1
Unit 17-32
（
indoor unit PCB address dial-up 16#-31#
）
2
Unit 33-48
（
indoor unit PCB address dial-up 32#-47#
）
3
Unit 49-64
（
indoor unit PCB address dial-up 48#-63#
）
