47
Electric wiring and the application
③
Master unit information center: display parameters of the whole system
SW9 SW10 SW11
Function
Operation
0
0
2
Refrigerant type
410A: R-410A refrigerant
0
1
2
Total qty and capacity
of outdoor units in the
same system
LD1: qty of outdoor
LD2
：
displays“-”
LD3/ LD4
：
total capacity of outdoor
（
unit: Hp
）
Eg, 3-48 represents 3 outdoors with total
capacity of 48Hp
0
2
2
Total capacity of
indoors
50.0: 50Hp
0
3
2
Qty of VB and indoors
in the same system
LD1/ LD2
：
Qty of VB (3 pipes model)
LD3/ LD4: Qty of indoor units
Eg, 0206 represents 2 VB and 6 indoor units
0
4
2
The number and total
capacity of indoors
with temp. sensors ON
under cooling
LD1/ LD2
：
the qty of indoors with temp. sensors
ON under cooling
LD3/ LD4
：
total capacity of indoors with temp.
sensors ON under cooling (unit: Hp)
Eg, 0312 represents 3 indoors with temp.
sensors ON under cooling and total capacity is
12Hp.
0
5
2
The number and total
capacity of indoors
with temp. sensors ON
under heating
LD1/ LD2
：
the qty of indoors with temp. sensors
ON under heating
LD3/ LD4
：
total capacity of indoors with temp.
sensors ON under heating (excluding capacity
correction of closed temp. sensors) (unit: Hp)
Eg, 0624 represents 6 indoors with temp.
sensors ON under heating and total capacity is
24Hp. (excluding capacity correction of closed
temp. sensors)
0
6
2
Target cooling temp.
Unit: degree
0
7
2
Target heating temp.
0
8
2
Refrigerant evacuation
Setting
*Only for outdoor
evacuation. For indoor
evacuation, do not
set. When it finishes,
cancel the setting or
re-electricity.
Press SW2(UP) for 2 secs continuously, display
1111 and start up; digital tube displays "YES",
detailed response: SV9, SV10, SV11 open;
LEVa1,2, LEVb open for 100pls, the other valves
close compulsorily. Press SW1(DN) for 2 secs
continuously, display 0000 and stop (setting is
invalid when unit is running)
0
9
2
Refrigerant charging
Setting
*Only for gas charged
outdoor. For indoor is
charged, do not set.
When it finishes,
Cancel the setting or
re-electricity.
Press SW2(UP) for 2 secs continuously, display
1111 and start up; digital tube displays "YES",
detailed response: LEVa1, 2 open for 500pls, the
other valves close compulsorily. Press SW1(DN)
for 2 secs continuously, display 0000 and stop
(setting is invalid when unit is running)
