Midea ATOM MDV-V56WDHN1(AtB)

Atom B Series VRF 50/60Hz
41
Part 5
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Electrical Components and Wiring Diagrams
2.2.3 System check button
On pressing Spot check button, the parameters listed in Table 5-2.6 will be displayed in sequence.
Table 5-2.7: 28/36/42/48/56/60 model system check
No.
Parameters displayed on DSP
Remarks
0
Operating frequency
Actual value = value displayed
1
Operating mode
Refer to Note 1
2
Operating fan speed level
Refer to Note 2
3
Total capacity requirement of indoor units
4
Total capacity requirement for the modified ODU
5
T3 Condenser temperature(°C)
Actual value = value displayed
6
T4 Outdoor ambient temperature(°C)
Actual value = value displayed
7
TP discharge temperature(°C)
Actual value = value displayed
8
TF invert module Temperature(°C)
Actual value = value displayed
9
TL refrigerant cooling tube temperature (°C)
Actual value = value displayed
10
EXVA position
Actual value = value displayed× 8
11
Actual current (A)
Actual value = value displayed
12
Inverter compressor current (A)
Actual value = value displayed
13
Actual voltage (V)
Actual value = value displayed
14
DC bus voltage (V)
Actual value = value displayed
15
Indoor heat exchanger pipe (T2/T2B) average temperature (°C)
Actual value = value displayed
16
T2A condenser temperature
Actual value = value displayed
17
Total number of IDUs
Actual value = value displayed
18
Number of Operating IDUs
19
Model name
20
System address
ODU address in the centralized control
system
21
Compressor error code
22
Priority mode
Refer to Note 3
23
Program version number
24-33
Last 10 times error protection code
4
Refer to Note 4
34
Display “--”
Notes:
1. Operating mode:
 0: standby; 2: cooling; 3: heating; 4: forced cooling.
2. The fan speed index is related to the fan speed in rpm and can take any integer value in the range 0 (0-off) to 15 (fastest). Please refer to Table 4-1.3
note 2 in Part 4.
3. Priority mode:
 0: first ON priority; 1: cooling priority; 2: Automatic selection of priority mode; 3: heating only; 4: cooling only; 5: heating priority
4. “nn” is displayed if no error or protection events have occurred since start-up; it displays all error protection code if the number of error protection
codes are less than 10 since start-up.
2.2.4 Digital display output
Table 5-2.8: Digital display output in different operating states
Outdoor unit state
Parameters displayed on DSP
Standby
The number of indoor units in communication with the outdoor unit
Normal operation
Compressor frequency
Error or protection
Error or protection code
System check
Refer to Table 5-2.6