Gree GMV-VQ680WM/C-X Service Manual page 378

Gree
Installation procedure
(1) Install according to the reverse order of disassembly.
(2) For wiring of terminals please refer to the wiring diagram of unit.
(3) Setting of dial code: Setting of the new main board should be the same as that of the
former faulted main board, and the setting should be done under power-off status of unit; it will
come into valid after it is re-energized, otherwise it will be invalid if the setting is done in
power-on status of unit.
5.3.4 Disassembly operation of electronic expansion valve
Preparation
(1) Cut off the power supply of unit system.
(2) Ensure that there is no refrigerant inside the pipeline system of unit;
(3) To remove top cover of unit please refer to section 5.3.2.1;
(4) To remove the front panel of unit please refer to section 5.3.2.2;
(5) To remove the electric box please refer to section 5.3.2.4.
Removing procedure
(1) Remove the rubber materials such as the insulation sleeve and tube fixing block near the
electronic expansion valve that need to be replaced;
(2) Unsolder the connecting pipe of electronic expansion valve and take out the old electronic
expansion valve;
NOTE: During welding, use a wet cloth to wrap the surrounding electronic expansion valves
and important components.
GMV6 HR DC Inverter VRF Units Service Manual
376