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(2) PG motor (indoor fan) does not operate (H6)
Stir the fan blade
with a hand when
the unit is DE -
ENERGIZED.
Does the
blade rotate
unsmoothly?
Reinstall the motor
and the blade to
make it rotate
smoothly.
Yes
Is the
feedback
terminal of PG
motor loose?
Insert the feedback
terminal tightly .
Mainboard
malfunction;
Replace it
.
No
Yes
Replace the fan
motor.
End
Insert the control
terminal tightly.
Yes
No
Re-energize
to turn on the unit;
measure within 1 min after the
louvers are opened whether the output
voltage on the control terminal
of the PG motor is over 50V?
No
Yes
No
Is the
malfunction
eliminated?
No
Is the
malfunction
eliminated?
No
No
No
Yes
Yes
Yes
Yes
Is the
control terminal
of PG motor
loose?
Is the
malfunction
eliminated?
Is the
malfunction
eliminated?
“H6”is
displayed on
the unit.
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