Mitsubishi Heavy Industries FDT100VNAWVH Service Manual page 179

When disassembling, be sure to turn off the power. When disassembling the electrical components, check the electrical wiring diagram.
The electrical components are under high voltage by the operation of the booster capacitor.
Fully discharge the capacitor before commencing a repair work. Failure to observe this warning could result in electric shock.
When parts of refrigerant cycle is disassembled by welding, be sure to work after collecting a refrigerant, if the refrigerant isn't
collected, the unit might explode.
Be sure to collect refrigerant without spreading it in the air.
These contents are an example. Please refer to a similar part of actual unit.
PROCEDURE & PICTURES
(c) FDU, FDUM series
(Bottom)
(Top)
4. To remove the impellers and motors(FM)
(1) Remove the lid of control box.(See No.1)
(2) Remove the bottom panel(B).(See No.3)
(3) Disconnect the motor connector(CNFMx or CNMx) on PCB in control box.
(4) Remove the motor fixing screw and remove it.
( mark/right and left side)
(5) Remove the fan casing fixing screw and remove it.(
(6) Remove the sirocco fan fixing bolt and remove it.(
Motor
1. To remove the lid of control box
(1) Remove 2 lid fixing screws and remove it.
2. To remove the printed circuit board (PCB)
(1) Remove the lid of control box.(See No.1)
(2) Pull off all the inserted connectors.
Control PCB
(3) Take off 4 control PCB fixing locking supports(
and remove it.
Power PCB
(4) Take off 6 power PCB fixing locking supports(
and remove it.
Bottom panel(B)
6. To remove the thermistors (example"Thi-A")
(1) Remove the lid of control box.(See No.1)
(2) Remove the bottom panel(B).(See No.3)
(3) Disconnect the Thi-A connector(CNH) on PCB in control box.
(4) Pull the thermistor fixing clip and remove it.(
(FDU FDUM series)
3. To remove the bottom panel(B)
(1) Remove 18 panel fixing screws and remove it.
5. To remove the motor PCB
(1) Remove the lid of control box.
(2) Remove the bottom panel(B).
(3) Disconnect the motor PCB connector
mark) (4) Remove 2 motor PCB fixing screws
mark)
178
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'19 • PAC-SM-309
PJG012D019
mark)
mark)
Motor PCB
Motor
(See No.1)
(See No.3)
(CNFMx or CNMx)on PCB in control box.
and remove it.
mark)
Control PCB
Power PCB
1