Turning Power Off; Fan Parts - Mitsubishi Electric LGH-F300RVX-E Handbook

(1) Turning power off

[1] Shut down the unit.
[2] Turn off the power supply isolator.
Precaution
When servicing, power supply to M-NET must be turned
off. Live-line working may cause a circuit board failure.

( 2 ) Fan parts

[1] Unscrew the black screws (three special screws 4×8,
indicated by ) to remove the control box cover.
[2] Check that LED4 on the circuit board is OFF, and then
disconnect the motor connectors (indicated by
the power circuit board.
Precaution
When disconnecting the motor connectors, make sure
that the power supply is turned off. Even when the fan
motor is stopped, disconnecting the live-line connec-
tors will cause a motor malfunction.
Assembly precaution
After connecting the motor connectors,
check the wiring inside the main unit.
If the motor leads are slack and are
likely to interfere with the removal/in-
sertion of the Lossnay cores, draw the
motor leads into the control box.
Pay attention not to allow the motor
leads to contact the components on the circuit board.
[3] Unscrew the black screw (one special screw 4×8, indi-
cated by ) for the fix piece.
QR code
) from
Fix piece
─ 38 ─
Control box cover
Power circuit board