GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
123
system high-pressure value is
-15 to 5°C.
Opening
degree of
heating
electronic
expansion
valves
●During the cooling operation,
the heating electronic expansion
valves always remain at 480
PLS.
●During the heating operation,
the adjustable electronic
expansion valves change
between 120 and 480 PLS.
Operation
frequency of
inverter
compressor
●The operation frequency of
inverter compressor 1 changes
between 20 and 95 Hz.
●The operation frequency of
inverter compressor 2 changes
between 30 and 100 Hz.
Current of
inverter
compressor
●According to different operation
frequencies and loads, the
current of inverter compressor 1
changes between 7 and 25 A.
The current of inverter
compressor 2 changes between 7
and 20 A.
IPM module
temperature of
inverter
compressor
●When the environment
temperature is lower than 35°C,
the temperature of the IPM
module is lower than 80°C. The
highest temperature is not higher
than 95°C.
Driver bus line
voltage of
inverter
compressor
●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
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.
Operation
frequency of
fan
●With the adjustment of system
pressure, the fans run between 0
and 65 Hz.
Environment
temperature of
IDU
Inlet-tube
temperature of
indoor heat
exchanger
●As the environment
temperature is different, the
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
10-20°C lower than the
outlet-tube temperature of the
same IDU in heating mode.
Outlet-tube
temperature of
indoor heat
exchanger
The opening degree
automatically changes between 0
To Next Page
Loading...
Need help?
General
