Gree GWH09RB-K3DBA3E - Page 45

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Measure the voltage of this foot to neutral
wire on the mainboard
Troubleshooting for
H6 malfunction
Stir the blade
with a tool to see whether
the blade rotates
smoothly
Is the
contr ol terminal of PG m otor
connected tightly ?
Repl ace PG m otor
End
yes
no
Is m alfunction
eli m inated
yes
no
Inser t the control
ter m i nal of PG
motor tightly
no
no
Stir the blade by
hand to see w hether
the blade rotate s
smoothly
Rei nstall the blade and
motor correctly
Is m al function
eli m inated
no
no
yes
yes
Tur n on the
unit again ; measure whether the output
voltage on control terminal for PG motor
is more than 50 V within 1 min after the
louvers are opened
no
yes
yes
Is the motor
star ted up
no
Is m alfunction
eli m inated
yes
yes
yesno
yes
Is malfunction
eliminated
Tighten the screw; reassemble the blade, motor
and shaft bearing rubber base sub-assy to make
sure there is no foreign object between them
Replace the mainboard
with the same model.