Gree MULTIPRO GMV-V WL/C-T Series Quick Start Manual page 14

These models must use system builder or selection software for additional charge amount.
• GMV-V36WL/C-T(U)
• GMV-V48WL/C-T(U)
• GMV-V60WL/C-T(U)
START UP
• Power on all indoor units
• All should display AO on unit display and/or wired controller
• Units without a display likely don't have power
• Any units displaying CO, have a communication error
DEBUG PROCESS
• Locate the four buttons on the outdoor board SW1 through SW4
• Note the display. It will cycle status codes.
• Likely says OF and AO
• Note the display. It will cycle status codes.
• Likely says OF and AO
• Press and hold SW3 for 5 seconds
• Displays 01 and ON
• Do nothing until 04 is flashing
• Number of indoor units
• If it matches, press SW3
• If it doesn't, check indoor units
Please note: The display may only show a steady "04" if four indoor units are communicating.
• Unit continues until 10
• Unit starts and checks if shutoff valves are open
• When the display reads 12 and AP (flashing)
• If additional refrigerant still needs to be added be prepared to add charge before moving forward.
• Press SW3
GR EE M ULTIPRO QUICK STA RT GUID E | 1 4