Gree GWC18MC-K3NNE1D - Page 32

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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 termi nal of PG m otor
connected ti ghtly ?
Repl ace PG motor
End
yes
no
Is malfunction
eliminated
yes
no
Inser t the control
ter minal 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 alfunction
eli minated
no
no
yes
yes
Tur n on the
unit again ; measur e whether the output
voltage on control terminal for PG motor
is mor e than 50 V within 1 min after the
louvers are opened
no
yes
yes
Is the motor
star ted up
no
Is malfunction
eli minated
yes
yes
yesno
yes
Is m alfunction
eli minated
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.