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No
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Turn the fan blades
by hand under
power-off condition
Whether the fan blades
can run smoothly?
Adjust the motor and blade
assembly so that rotor can run
smoothly.
Under power-off condition,
check whether the wiring terminal
between indoor fan and main
board is loose.
Turn unit on
to check whether the
malfunction is
eliminated.
Turn unit on
to check whether the
malfunction is
eliminated.
Reinsert the wiring
terminal of indoor fan.
It's the malfunction of main board.
Replace a new main board that is
of the same model.
It's the malfunction of main board.
Replace a new main board that is
of the same model.
Replace a new main board that is
of the same model.
It's the malfunction of main board.
Then check whether the voltage
between terminal 2 and terminal 3
of the motor interface is 15VDC.
Connect power and restart the unit.
Test whether the voltage between terminal 1 and terminal 2
of motor interface is within 280~310VDC.
Then check whether there is voltage
between terminal 2 and terminal 4
of the motor interface.
It's the malfunction of motor.
Replace a new motor that is
of the same model.
Start
Summary of Contents for GH18E
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