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2.2 Constraint Cooling
1.Constraint Cooling
Outdoor unit main control board has constraint cooling key: SW1
(see Fig.2-1). One press will send constraint cooling signal to all
the indoor unit. Constrain all the indoor unit to constraint cooling
operation. Outdoor units operate as the fixed frequency shown in
Table 2-2. Indoor unit fan operate at a high speed and press the
key again to log out constraint cooling mode.
SW1 Constraint cooling button
SW2 Check Query button
MAIN BOARD
(OUTDOOR UNIT)
SW2 Query instructions
NO.
Normal display
1
0. - -
2
1. - -
3
2. - -
4
3. - -
5
4. - -
6
5. - -
7
6. - -
8
7. - -
9
8. - -
10
9. - -
11
10. - -
12
11. - -
13
12. - -
14
13. - -
15
14. - -
16
15. - -
17
16. - -
18
17. - -
19
18. - -
20
19. - -
21
20. - -
22
21. - -
23
22. - -
24
23. - -
25
24. - -
26
25. - -
27
26. - -
28
27. - -
29
28. - -
30
29. - -
31
30. - -
31. - -
32
33
32. - -
Fig.2-1
Display content
Outdoor unit address
Outdoor unit itself capacity
Moduler outdoor unit Qty
Qty.setting of indoor units
Total capacity of outdoor unit
Total requirement of indoor unit capacity
Total requirement of main unit corrected capacity
Operation mode
This outdoor unit actual operation capacity
Speed of fan A
Speed of fan B
T2B/T2 average Temp.
T3/T3A pipe Temp.
T4 ambient Temp
Discharge Temp.of Inverter compressor A
Discharge Temp.of Inverter compressor B
Radiator temperature
Current of inverter compressor A
Current of inverter compressor B
Opening angle of EXV A
Opening angle of EXV B
High pressure
T3B
Qty. of Indoor units
Qty. of the working Indoor units
Priority mode
Night noise control mode
Static pressure mode
DC voltage A
DC voltage B
Version of the program
The last error or protection code
26
Table of force cooling frequency
Mode
33.5kW/40kW
45kW
2. Spot check
Check in the outdoor main control panel is the spot check button
(refer to Fig.2-1), and press this button, the digital pipe of the
main control panel will circulating display the parameters (display
one parameter every press this button) as the following table 2-3
sequence.
Note
0
8 10 12 14 16 18
Reserve
Available for main unit
Reserve
Available for main unit
Available for main unit
0 2 3 4
Capacity requirement
0 1
...... 9 10
0 1
...... 9 10
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Actual value
Reserve
Reserve for 33.5kW/40kW
That can communicate with indoor units
Actual value
0 1 2 3 4
0 1 2 3
Reserved
Actual value÷10
Actual value÷10
Without error or protection,display code 8.8.
Check end
Table 2-2
Force cooling rate(Hz)
62
48
Table 2-3
V.2
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