Gree GUHD09NK3FO Service Manual page 97

U-Match Series DC
Inverter Service Manual
H6 DC fan error
94
H6 is displayed on the wired
controller
H6 is displayed in the
mainboard 88 indicating
lamp
Is the motor phase
sequence right?
Yes
Is the Fan wire terminal
loose
No
Replace the
mainboard.Does it
work normally?
No
Replace the outdoor fan
No Adjust the motor
phase sequence
Tighten the fan
Yes
wiring terminal
Yes
Work normally