Gree GMV6 DC Inverter VRF Units Service Manual
219
Do not touch directly by
hand the position of the
four-way valve in the
unit. High-temperature
refrigerant on the
exhaust side may cause
danger of burning
D - Connecting to
the exhaust side.
Warning: high
temperature!
Marks are made on the 4-way valve: D indicates connection to the exhaust side, E indicates
connection to the IDU evaporator, S indicates connection to the air inlet of gas-liquid separator, C
indicates connection to the condenser; when the system runs in the cooling mode, C indicates that the
pipeline is in the high-pressure and high-temperature status, while E and S indicate that the pipeline is in
the low-pressure and low-temperature status; when the system runs in the heating mode, E indicates
that the pipeline is in the high-pressure and high-temperature status, while C and S indicate that the
pipeline is in the low-pressure and low-temperature status; the pipe marked by D is connected to the air
outlet and remains in the high-pressure and high-temperature status. When the unit is being started,
defrosting and conducting oil return, the 4-way valve produces obvious valve pushing sound. Do not
touch the pipeline with hands. Otherwise, you may get scalded.
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