Midea V6 Series Service Manual page 135

V6 VRF 50Hz
3.2 Normal Operating Parameters of Refrigerant System
Under the following conditions, the operating parameters given in Tables 5-5.4 and 5-5.5 should be observed:
 The master outdoor unit can detect all the indoor units.
 The number of indoor units displayed on DSP2 is steady and is equal to the actual number of indoor units installed.
 All stop valves are open and all indoor unit EXVs are connected to their unit's PCB.
 If the combination ratio is 100% or less, all the indoor units are currently running and if the combination ratio is more
than 100%, indoor units with total capacity equal to the total capacity of the outdoor units are currently running.
 If the outdoor ambient temperature is high, the system is being run in cooling mode with the following settings:
temperature 17°C; fan speed high.
 If the outdoor ambient temperature is low, the system is being run in heating mode with the following settings:
temperature 30°C; fan speed high.
 The system has been running normally for more than 30 minutes.
Table 6-3.4: Outdoor unit cooling mode operating parameters
Outdoor ambient temperature
Average discharge temperature
Average discharge superheat
Discharge pressure
Suction pressure
DC inverter compressor current
Table 6-3.5: Outdoor unit heating mode operating parameters
Outdoor ambient temperature
Average discharge temperature
Average discharge superheat
Discharge pressure
Suction pressure
DC inverter compressor current
134
°C < 10
°C 60-76
°C 17-30
MPa 2.3-2.8
MPa 0.6-0.7
A 9-20
°C < -10 -10 to 0
°C 56-74 57-76
°C 17-35 17-35
MPa 1.7-2.4 1.8-2.5
MPa 1.4-1.6 1.5-1.7
A 11-25 13-27
10 to 26 26 to 31 31 to 41
62-78 65-82 67-92
17-33 17-34 17-36
2.3-2.8 2.4-3.6 2.6-3.8
0.7-0.9 0.8-1.0 1.0-1.2
11-22 12-25 15-29
0 to 5 5 to 10
58-78 61-82
17-35 17-33
1.9-3.0 2.2-3.2
1.6-2.2 1.8-2.6
12-28 11-28
> 41
69-92
10-32
3.1-4.2
1.2-1.4
20-26
10 to 17 > 17
63-82 63-82
14-33 14-33
2.3-3.2 2.3-3.2
1.8-2.6 2.0-2.4
11-25 15-20