Gree U-Match Series Owner's Manual page 45

When connecting the power cord, make sure the phase sequence of the
⑧.
power supply matches with the corresponding terminals, otherwise the
compressor will get reversed and operate abnormally.
1) Indoor side
Take off the electric box cover from the sub-assembly of electric box. Then
connect the wires. Connect the connection wires of indoor unit according to the
corresponding marks.
2) Outdoor side
Remove the big handle/front panel of the outdoor unit and insert one end of the
communication cord and the power cord to the terminal board.
GU50W/A1-K, GU71W/A1-K,GU85W/A1-K
U-Match Series Duct Type Unit
WARNING
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