Gree GMV6 DC Inverter VRF Units Service Manual
Reference Values of Commissioning Parameters of the DC Inverter VRF Air-conditioning Unit
No.
Commissioning Item
Unit Reference Value Remarks
9
System
parameters
Outdoor unit
parameters
heating
electronic
expansion
valve
PLS
●In cooling mode, the opening of the
heating electronic expansion valve is
3000PLS;
●In heating mode, the opening of the
electronic expansion valve can be
adjusted between 0PLS and 3000PLS.
—
11
IPM module
temperature of
the inverter
°C
●The IPM module temperature is lower
than
80°C, and the highest temperature
does not exceed 95°C.
—
12
Bus voltage of
the inverter
compressor
driver
V
●The normal bus voltage is 1.414 times
of the power voltage. For example, if
the voltage of a three-phase power is
390 V, the rectified bus voltage is: 390
V x 1.414 = 551 V. Difference between
the measured value and the above
calculated value within 15 V is normal.
—
14
Indoor unit
parameters
Inlet pipe
temperature of
the indoor heat
exchanger
°C
●Based on the ambient temperature,
the inlet pipe temperature of the same
indoor unit in cooling mode is 1°C to
7°C lower than the outlet pipe
temperature;
●In heating mode, the inlet pipe
temperature of the same indoor unit is
10°C to 20°C lower than the outlet pipe
temperature.
—
15
Outlet pipe
temperature of
the indoor heat
exchanger
°C —
16
indoor
electronic
expansion
valve
PLS
●2000PLS electronic expansion valve:
The opening can be automatically
adjusted between 200PLS and
2000PLS.
●480PLS electronic expansion valve:
The opening can be automatically
adjusted between 70PLS and 480PLS.
—
17
Drainage
system
— —
●The indoor unit drains smoothly and
thoroughly, and the condensate water
pipe has no slope water storage; the
outdoor unit can completely drain from
the drain pipe, and no water drops
directly from the unit foundation.
—
18 Others — —
●The compressor and indoor and
outdoor fans operate without abnormal
noise. The unit operates normally
—
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