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R410A DC Inverter VRF V4 Plus Individual Series 50Hz
Caution:
Don't mix up the different refrigerants or abuse the tools and measurements which directly contact with refrigerants.
Don't adopt refrigerant gas for air vacuuming.
If vacuum level could not get to -0.1MPa, please check whether resulted by leakage and confirm the leakage site. If no leakage,
please operate the vacuum pump again 1 or 2 hrs.
12. Additional refrigerant charge
Calculate the additional refrigerant charge according to the diameter and the length of the liquid side pipe of
the outdoor/indoor unit connection. The refrigerant is R410A.
Pipe size of liquid side
Φ6.4
Φ9.5
Φ12.7
Φ15.9
Φ19.1
Φ22.2
Φ25.4
Φ28.6
13. Auto judging system refrigerant volume
When all the indoor units are in cooling or heating mode, the system will be in refrigerant volume judgment
mode automatically. If the system judges that the refrigerant volume is normal, the system will operate normally,
no error code will display. If the system judges that the refrigerant volume is abnormal, corresponding error
code will display on digital tube.
When only partial indoor units are in cooling or heating mode, the system will not judge the refrigerant volume
and the digital tube will reserve the last judging result.
Error code
r1
r2
r3
R1
R2
76
Connect with vacuum pump
Perform the pump (last for 2 hours or above)
When get the vacuum level
-0.1MPa, the pump should
keep running for 20-60 mins
Shut down the
vaccun pump
Place the vaccum state unused (1 hours or above)
Additional refrigerant charge per meter (kg)
0.022
0.057
0.110
0.170
0.260
0.360
0.520
0.680
1. Close-off the valve of
vacuum meter.
2. Cut off the connection
between pressure meter
and vacuum pump.
3. Close the vacuum
pump.
Content
Lack of refrigerant
Obvious lack of refrigerant
Serious lack of refrigerant
Too much refrigerant
Serious too much refrigerant
MCAC-VTSM-2014-04
Installation
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Troubleshooting
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Do you have a question about the VRF V4 Plus I Series and is the answer not in the manual?
Questions and answers
What the function of alphabet given in enc3 like abcdefg
In the Midea Series, ENC3 is used for setting the number of indoor units. The alphabet values in ENC3 correspond to numeric values as follows:
- 0–3: for indoor units 0–15
- 9–C: for indoor units 16–31
- 9–C: also mentioned again, possibly for another range
These alphabet values represent specific ranges of indoor unit numbers.
This answer is automatically generated