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6. ELECTRIC WIRING
6.1 Sw2 query instructions
Apply the SW2 spot check
No.
Display content (normal)
1
Outdoor unit address
Outdoor unit capacity
2
3
Modular outdoor unit qty.
4
Qty.setting of indoor units
5
Total capacity of outdoor units
Total requirements on indoor unit
6
capacity
Total requirements on correct
7
main unit corrected
Operation mode
8
Outdoor units' capacity when
9
running
10
Speed of fan A
11
Speed of fan B
12
T2B/T2 average temp.
13
T3 pipe temp.
T4 ambient temp.
14
Discharge Temp.of Inverter
15
compressor A
Discharge Temp.of Inverter
16
compressor B
17
Heat sink Temp.
Discharge pressure corresponding
18
to the saturation temperature
Current of inverter compressor A
19
Current of inverter compressor B
20
Opening angle of EXV A
21
Opening angle of EXV B
22
High pressure
23
24
Low pressure (reserve)
Qty. of indoor units
25
Qty. of working Indoor units
26
Priority mode
27
Night noise control mode
28
29
Static pressure mode
DC voltage A
30
31
DC voltage B
Reserve
32
33
Last-time error or protection code
Times of error clearance
34
----
35
Table.6-1
Note
0,1,2,3
8,10,12,14,16,18,20,22
Available for
main unit
Available for
main unit
Capacity
requirement
Available for
main unit
Available for
main unit
0,2,3,4
Capacity
requirement
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value +30
Actual value
Actual value
Display value×0.1MPa
That can communicate
with indoor units
Actual value
0,1,2,3,4
0,1,2,3
0,1,2,3
If there is no protection or error,
the panal will diaplay 8.8.8.
Check end
The display contains the following:
1) Normal display: On standby, the high position displays the
address of the outdoor unit, and the low position displays the Qty.
of indoor units that can communicate with the outdoor units. When
running, it will display the rotation frequency of the compressor.
2) Operation mode: 0-OFF; 2-Cooling; 3-Heating; 4-Constraint
cooling.
3) Fan speed: 0-stop; 1~15: speed increases sequentially; 15 is the
max. fan speed.
4) EXV opening angle: Pulse count=display value×8;
5) Priority mode: 0-heating priority mode; 1-cooling priority mode;
2-Number 63 and higher operating modes first; 3-responds to
heating mode only; 4-responds to cooling mode only.
6) Night noise control mode: 0-Night noise control mode; 1- silent
mode ; 2-most silent mode; 3-no priority.
7) Static pressure mode: 0-Static pressure is 0 Mpa ; 1-Static
pressure mode is low pressure ; 2-Static pressure mode is
medium pressure ; 3-high static pressure mode is high pressure.
6.2 Terminal base function
A
B
To 380-415V 3N
~
Outdoor units
Network
centralized
accounting
monitoring
6.3 Electric wiring system and installation
Outdoor unit power wiring
Outdoor unit
power supply
380-415V 3N~ 50Hz/60Hz
Indoor unit power wiring
Indoor power
Leakage protector
Manual switch
1
2
3
9
10
11
C
N
50Hz/60Hz
Fig.6-1
Indoor units
Indoor units
centralized
communication
controls
Manual
Leakage
switch
protector
Branch box
4
5
6
7
Indoor unit
12
13
14
15
16
Installation manual
Outdoor units
communication
Fig.6-2
Fig.6-3
8
Fig.6-4
19
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