LG MULTI V 5 Manual Book page 78

2.5 Precautions of Replacement
1. Be sure to use the compressor suitable for the model
2. Be careful not to damage the pipe
3. Do not enter foreign substances into the compressor
4. Check U, V, W Color of the compressor terminals
5. Use screw only for the compressor
6. When replacing the compressor, add oil if the oil has flowed too much
7. Use only regulated oil specified in this guide
8. Vacuum over 4 ~ 5 hours
9. Perform pipe cleaning with nitrogen
10. Charging with regulated refrigerant specified in this guide
2.6 Checklist after Replacement
1. Check whether there is any abnormality when the cycle is stabilized at cooling or heating mode.
(Suction / Discharge superheat degree, Input current, Phase current, Pressure ratio, Oil sensor, etc.)
2. Check current Hz control according to target Hz
3. Check that the target high / low pressure
4. Check the amount of refrigerant
5. Check the abnormal noise during running
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2.7 Compressor Specification
The specification of compressor being adapted to Multi V is below.
When the compressor is not working, please check the compressor referring to the below specification.
Model
Manufacturer
Type BLDC inverter Scroll
Compression Volume (cm 3 /rev)
Refrigerating machine oil
Weight (kg)
Internal diameter of inlet (mm)
Internal diameter of outlet (mm)
Heat Pump & Heat Recovery
JQC048MAA JQC068MAA
LG LG
BLDC inverter Scroll
43.8 62.1
FVC68D FVC68D
31 31.8
ID22.6 ±0.2 ID22.6 ±0.2
ID16.05 ±0.2 ID16.05 ±0.2
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