31
Spot Check (Diagnostic Data) SW 2
Press SW 2 CHECK the number of times shown in the No** column to view system data and performance
information.
No**. Parameter description
Parameter value*
0 Normal display
If all indoor units off, it will show the quantity of all indoor units; if
the outdoor unit is in time delay, it will show 0; if the outdoor unit
is running, it will show compressor speed.
1 Operating mode
(0 - off, 2 - cooling, 3 - heating, 4 - forced cooling)
2 Operating fan speed
1 through 9, 0 - stop
3
The total capacity requirements
of the indoor unit
This number is related to indoor capacity (Horsepower) and
indoor room temperature and setpoint.
4
The capacity requirement of the
revised external unit
This is a number revised by outdoor ambient temperature based
on the previous number No. 3
5
T3 (Condenser temperature)
Actual value in C
6 T4 (Outdoor ambient
temperature)
Actual value in C
7 T5 (Compressor discharge
temperature)
If T5>99, it will only show the front two digits of the actual
temperature. For example, it will show "10." when T5 is 105.
8 Reserved
Reserved
9 Opening of EXV
Actual value*8P
10 Unit current
Amps
11 1/10 of DC bus voltage
12
T2/T2B average temperature
T2 - Heat/T2B Cooling
(When system operates cooling, it shows T2B; when system
operates heating, it shows T2.)
T2 and T2B Average Operating IDU Coil Temp sensor In degrees
C
13
Total number of the indoor units
14
Number of the operating indoor
unit
Number of IDUs calling for certain mode
15 Model code
3 - 3 Ton; 4 - 4 Ton; 5 - 5 Ton
16 High pressure
Actual pressure (MPa)*10
17
Saturation temperature of high
pressure
Actual value in C
18 Priority mode
0 - Heating priority; 1 - Cooling priority; 2 - First running priority ;
3 - Heating only; 4 - Cooling only
19
Version of the firmware
20 The last fault or protection code
21 --
End
*
Units of temperature are shown as °C, units of pressure are shown as MPa.
** No refers to number of presses of SW 2 button.
Summary of Contents for VPB H4-3P Series
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