:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
21
SW1 button on PCB is for force cooling mode. Press once to enter the force cooling mode, and press twice to exit the operation.
SW2 button is the query button. The LED will display the parameter values by the number of pushes per SW2 query
instructions.
Table 22 —Spot Check Query Instructions
NOTES:
1. Normal display: If standby, the LED displays the quantities of indoor units communicated. Otherwise, it displays the rotation frequency
of compressor. It may display 0 Hz at startup stage. When defrosting, it displays dF.
2. Mode:
0 = OFF
2 = Cooling
3 = Heating
4 = Forced cooling mode
3. 3 Ton-12 (KW), 4 Ton-14 (KW), 5 Ton-16 (KW)
4. 0-Heating priority mode:
1 = Cooling priority mode
2 = VIP
4 = Cooling only
5 = Debugging mode No.1
6 = Debugging mode No.2
No.
Description
Note
0
Normal display
*1
0
1
Operating mode
*2
0, 2, 3, 4
2
Operating fan speed
3
The total capacity demands of indoor units
4
The capacity requirement of the revised external unit
5
T3 (Condenser temperature)
Actual value
6
T4 (Outdoor temperature)
Actual value
7
T5 (Compressor discharge temperature)
Actual value (if the temperature over 100, DIS1 will only display the first two values)
8
The surface temperature of the heat exchanger
Actual value
9
Opening of EEV
Actual value = Display value x 8
10
Unit current
11
1/10 of DC bus voltage
Actual value / 10
12
T2A average temperature (indoor unit)
13
Total number of indoor units
14
Number of the operating indoor units
15
Outdoor unit capacity
*3
12, 14, 16
16
Discharge pressure
Actual value = Display value x 0.1 MPa
17
Saturation temperature of the discharge pressure
18
Priority mode
*4
0, 1, 2, 4, 5, 6
19
Version of the program
20
Last error of protection code
None with “nn”
21
Display “--”