Gree GMV5 Series Service Manual page 126

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
6
7
8
9
10
11
12
13
Indoor unit
14
15
Opening
degree of
heating
electronic
expansion
valves
Operation
frequency of
inverter
compressor
Current of
inverter
compressor
IPM module
temperature of
inverter
compressor
Driver bus line
voltage of
inverter
compressor
Operation
frequency of
fan
Environment
temperature of
IDU
Inlet-tube
temperature of
indoor heat
exchanger
parameter
Outlet-tube
temperature of
indoor heat
exchanger
Opening
degree of
system high-pressure value is
-15 to 5° C .
●During the cooling operation,
the heating electronic expansion
valves always remain at 480
PLS.
PLS
●During the heating operation,
the adjustable electronic
expansion valves change
between 120 and 480 PLS.
●The operation frequency of
inverter compressor 1 changes
between 20 and 95 Hz.
Hz
●The operation frequency of
inverter compressor 2 changes
between 30 and 100 Hz.
●According to different operation
frequencies and loads, the
current of inverter compressor 1
A changes between 7 and 25 A.
The current of inverter
compressor 2 changes between 7
and 20 A.
●When the environment
temperature is lower than 35° C ,
the temperature of the IPM
° C
module is lower than 80° C . The
highest temperature is not higher
than 95° C .
●The normal bus line voltage is
1.414 times larger than the
power voltage. For example, if
the three-phase power voltage is
390 V, the bus line voltage after
V
current rectification is 390 V ×
1.414 = 551 V. It is normal if the
difference between the actual
test value and the calculation
value is within 15 V.
●With the adjustment of system
Hz pressure, the fans run between 0
and 65 Hz.
° C
●As the environment
temperature is different, the
° C
inlet-tube temperature is 1-7° C
lower than the outlet-tube
temperature of the same IDU in
cooling mode.
●The inlet-tube temperature is
° C
10-20° C lower than the
outlet-tube temperature of the
same IDU in heating mode.
The opening degree
PLS
automatically changes between 0
123
——