Gree GMV5 Series Service Manual page 192

For GMV-400WM/B-X and GMV-450WM/B-X variable frequency units, their compressors are both
inverter compressors, differing in models. The one close to the condenser is compressor 1
―E655DHD-65D2YG‖ and the other close to the liquid separator head is compressor 2
―E405DHD-38D2YG‖. The removal procedure is basically the same.
1. Inlet of inverter
compressor
3. Unscrew the
compressor
After the compressor and oil separator are removed, check oil quality. If oils are contaminated, replace
the compressor, oil separator, and gas/liquid separator. If oil changes to black, check oils of other
modular units. The check procedure is similar to the preceding.
Note: Before replacing the faulty compressors, make sure to block their openings with tapes. They
should be kept intact for further analysis.
Step 5: Check system parts.
If system oil is contaminated, check unit parts, including oil separator, gas/liquid separator, and storage
tank.
1. Check oil separator.
Remove the oil separator. For the removal procedure, refer to step 4. Tilt the separator to draw oil out
into a container. Block the container for further factory inspection.
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
2. Outlet of
inverter
compressor
Name-
plate
Compressor –
frequency
variable
189