GREE                                                                        GMV5E DC INVERTER VRF UNITS SERVICE MANUAL 
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3. Disconnect  all  lines  of  the  compressor  drive,  including:  compressor  line;  communication  line 
between the master unit and the drive; communication line between the compressor drive and fan 
drive;  compressor  drive  output  18  VDC;  bridge  rectifier  output  P;  bridge  rectifier  output  N; 
compressor  drive  output  540  VDC;  reactor’s  wiring  terminal;  bridge  rectifier  input  AC  inlead; 
compressor drive’s mains terminal. See the figure below:   
 
4. Loosen the screws on the compressor drive, as shown in the figure below: