Gree GMV-VQ680WM/C-X Service Manual page 232

Gree
Step 2: Fully open the liquid pipe valve and gas pipe valve of each module.
Step 3: Make the complete unit enter into debugging operation by the debugging software or the
main board of outdoor unit. (see the debugging part for the specific operation).
Step 4: When it comes to the procedure of charging refrigerant, open the refrigerant tank valve and
charge the residual refrigerant "m`".
Step 5: When all refrigerant has been charged, close the refrigerant tank valve and wait until the
automatic debugging for the complete unit is finished.
Step 6: Once debugging is finished, disassemble the pressure gauge, etc., to complete the
refrigerant-charging work.
GMV6 HR DC Inverter VRF Units Service Manual
230