Gree GWH(09)RA-K3DNA1E/I - Page 29

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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
control ter minal of PG motor
connected tightly ?
Repl ace PG motor
End
yes
no
Is malfunction
eliminated
yes
no
Insert the contr ol
ter m inal of PG
motor tightly
no
no
Stir the bl ade by
hand to see whether
the blade r otate s
smoothly
Rei nstal l the blade and
motor correctly
Is malfuncti on
eli m inated
no
no
yes
yes
Tur n on the
unit again ; m easure whether the output
voltage on contr ol ter minal for PG motor
is mor e than 50 V within 1 min after the
louvers ar e opened
no
yes
yes
Is the motor
started up
no
Is malfunction
eli m inated
yes
yes
yesno
yes
Is malfuncti on
eli m inated
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.