Control Parts - Mitsubishi Electric LGH-F300RVX-E Handbook

(4) Control parts (For LGH-F300RVX-E to LGH-F600RVX-E)
Precaution
Before replacing the circuit boards, see (6) Procedures for replacing the circuit boards (on pages 45 to 47).
[1] Remove the control box cover. → See (2) [1] .
[2] Check that LED4 on the circuit board is OFF, and then
disconnect the connectors (indicated by
control circuit board.
[3] Unscrew the screws (two PT screws 4×8, indicated by
), and remove the control circuit board.
[4] Disconnect the connectors (indicated by
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.
) from the
) from the
For the fan motor
For the damper
motor
─ 41 ─
Control circuit board
Control circuit board
(LG-X07DC-E . C)
For the reactor
For the terminal
block
Power circuit board