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11. INDOOR UNIT DISASSEMBLY PROCEDURE
(1) FDU, FDUM series
Read these "Precautions for safety" carefully before starting disassembly work and do it in the proper way.
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.
(Bottom)
(Top)
4. To remove the impellers and motors(FM)
(
) 1
e R
m
o
e v
t
e h
d i l
f o
o c
(
) 2
e R
m
o
e v
t
e h
b
t o
o t
m
(3) Disconnect the motor connector(CNFMx or CNMx) on PCB in control box.
(
) 4
e R
m
o
e v
t
e h
m
o
o t
f r
(
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
DISASSEMBLY PROCEDURE
Precautions for safety
PROCEDURE & PICTURES
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)
t n
o r
b l
x o
S ( .
e e
N
o.1.)
p
n a
( l e
) B
S ( .
e e
N
. o
3.)
i x i
g n
c s
e r
w
n a
d
e r
m
o
e v
. t i
6. To remove the temperature sensors (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 temperature sensor 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
(
) 3
mark)
(4) Remove 2 motor PCB fixing screws
mark)
164
-
-
'21 • KX-T-386
PJG012D019
Control PCB
Power PCB
mark)
mark)
Motor PCB
Motor
S (
e e
N
. o
1.)
e R
m
o
e v
t
e h
b
t o
o t
m
p
n a
l e
B (
. )
(See No.3.)
D
s i
o c
n
n
c e
t t
e h
m
t o
r o
P
C
B
o c
(CNFMx or CNMx)on PCB in control box.
and remove it.
mark)
n
e n
t c
r o
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