Midea V6R VRF Series User Manual

V6R VRF 50Hz
165
Part
6
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Diagnosis and Troubleshooting
4.3 Parameters of Excess and Insufficient Refrigerant System
Under the following conditions, the operating parameters given in Tables 6-4.4 and 6-4.5 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 EEVs 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.
 There parameters are more reliable in cooing only mode.
Table 6-4.4: Outdoor unit operating parameters in excess refrigerant system
Outdoor ambient temperature (T4 )
°C
≥41
31 to 41
26 to 31
10 to 26
＜10
Discharge pressure (Pc)
MPa
≥3.5
≥3.4
≥2.8
≥ 2.6
≥2.4
Suction superheat (T7-Te)
°C
≤3
≤3
≤3
≤3
≤3
Discharge superheat (DSH)
°C
≤11
≤ 15
≤ 15
≤ 15
≤ 17
Table 6-4.5: Outdoor unit operating parameters in excess refrigerant system
Outdoor ambient temperature (T4 )
°C
≥41
31 to 41
26 to 31
10 to 26
＜10
Discharge pressure (Pc)
MPa
≤3.0
≤2.6
≤2.4
≤2.3
≤2.2
Suction superheat (T7-Te)
°C
≥18
≥15
≥15
≥12
≥12
Discharge superheat (DSH)
°C
≥35
≥35
≥30
≥30
≥30

Midea V6R VRF Series Specifications

General

Brand	Midea
Model	V6R VRF Series
Category	Air Conditioner
Language	English