Service Manual
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2
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Fan parts
[1] Remove the black screws (three special screws 4×8,
indicated by ) to remove the control box cover.
For LGH-F940RVX2-E and LGH-F1200RVX2-E
See (5) [1] (on page 48) for removing the control
box cover.
Control box cover
[2] Check that LED4 (red) on the circuit board is OFF, and
then disconnect the motor connectors (CN9, CN10,
indicated by ) from the power circuit board.
Power circuit board Control circuit board
(1) Turning power off
[1] Shut down the unit.
[2] Turn off the power supply isolator.
Assembly precaution
After connecting the
motor connectors
(CN9, CN10), check the
wiring inside the main
unit.
Push in the motor
leads until their cord
bands touch the cord
bush.
Precaution
When servicing, power supply to M-NET must be
turned off. Live-line working may cause a circuit
board failure.
Precaution
When disconnecting the motor connectors, make
sure that the power supply is turned off and
all LEDs are unlit. Even when the fan motor is
stopped, disconnecting the live-line connectors
will cause a motor malfunction.
[3] Remove the black screw (one special screw 4×8, indi-
cated by ) for the fix piece.
Fix piece
QR code
LED4
Push in the
leads.
Cord band
Cord bush
CN9
CN10