Gree GUHD09NK3FO Service Manual page 95

U-Match Series DC
Inverter Service Manual
P5 Compressor current protection
H7 Compressor motor desynchronizing
H5 IPM protection
Ld Phase loss
92
P5, H7, H5 or Ld is displayed
on the wired controller
P5, H7, H5 or Ld is displayed
in the mainboard 88
indicating lamp
Is the compressor
phase sequence right?
Yes
Is the compressor wire
terminals tightened
No
Replace the mainboard.
Does it work normally
No
Replace the compressor
No
adjust the
compressor
phase sequence
Yes
Tighten the
compressor wire
terminals
Yes
Work normally