Gree GMV6 DC Inverter VRF Units Service Manual
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4 Inspection of Key Parts
4.1 Power
The power supplies of the compressor and fan comprise the following
three parts:
① The specifications of the input power are 440~460V 3~ 60Hz+ earth
line.
② The drive board can convert AC power to DC power of about 640 V
(1.41 x power voltage).
③ DC-AC three-phase inverter.
Use of power to the main control board:
① Phase protection.
② Providing 440~460V AC power for the solenoid valve coil and 4-way valve coil.
③ Generating the low-voltage DC power.
Layout of electrical appliance box
Models: GMV-224WM/G-U, GMV-280WM/G-U, GMV-335WM/G-U