Power Distribution Of Unit; Main Electric Parts - Gree GMV-24WL/C-T Service Manual

GREE

3 Power Distribution of Unit

3.1 Power distribution of unit
The control logical relationship among parts inside the electric box of unit is showed by the mongline
diagram (CAD source file).
The main loop is showed by bold line (line width: 1mm); the control loop is showed by slim line (line
width: 0.2mm).
Power wiring
board
Filter plate
4-way valve, by-pass valve,
electric heating belt and control
（Bold line is the power line and the slim line is the control line）

3.2 Main electric parts

Name
Filter plate
IPM Module
Main control board
signal
Photo
DC Inverter Side Discharge VRF Ⅱ for North America
Drive board
Temperature sensor, electric
expansion valve, high pressure and
low pressure switch and so on
It main effect is to eliminate the interference
of power for protecting unit's anti-interference
capability and prevent the interference to
other electric appliances.
There are three complemental IGBT tube
inside the IPM module. They are controlled
by PWM wave and then bring the pressure of
DC bus bar to different stator windings of
compressor at different stage, and then
generate current on the stator. Meanwhile,
magnetic field will be generated on the stator
winding, and push the operation of rotor and
then drive compressor to operate.
110
Compressor
Fan
Function introduction