Daikin FDMQ09RVJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Indoor Unit
Inverter
Duct Connected Type
5.0/6.0/7.1 kW Class
9000/12000/15000/18000/24000 Btu/h Class
Si071951E

Service Manual
Removal Procedure
Indoor Unit
FDMQ09RVJU FMA50RVM4
FDMQ12RVJU FMA60RVM4
FDMQ15RVJU FMA71RVM4
FDMQ18RVJU
FDMQ24RVJU FMA50RVMA
FMA60RVMA
FDMR50TVMG FMA71RVMA
FDMR60TVMG
FDMR71TVMG FMA50RVMN
FMA60RVMN
FMA71RVMN
FMA50RVMV
FMA60RVMV
FMA71RVMV

Si071951E
Removal Procedure 1
Table of Contents
1. PCBs / Reactor / Terminal Blocks...........................................................2
2. Fan Motor / Fan Rotor.............................................................................5
3. Drain Pan ................................................................................................8
4. Thermistors / Drain Pump / Float Switch...............................................10
5. Indoor Heat Exchanger .........................................................................14
Note: The illustrations may be slightly different depending on the model.

PCBs / Reactor / Terminal Blocks Si071951E
2Removal Procedure
1. PCBs / Reactor / Terminal Blocks
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Appearance
2. Remove the electrical box
cover.
1
2
Loosen the 2 screws.
Slide down the
electrical box cover to
remove it.
3. Remove the main PCB
(A1P).
[X15A]: float switch (white)
[X16A]: suction air thermistor
(R1T) (white)
[X17A]: middle thermistor (R3T)
(orange)
[X18A]: liquid pipe thermistor
(R2T) (red)
[X25A]: drain pump
[X27A]: terminal block (X1M)
[X30A]: terminal block (X2M)
[X70A]: fan PCB (A2P)
1 Disconnect the
connectors of the main
PCB (A1P).
Electrical box cover
Discharge side
(R25859)
Suction side
Electrical box
cover
Screw hole
(R25860)
[X30A]
[X25A] [X70A] Main PCB (A1P) [X27A]
[X18A]
[X16A]
[X17A]
[X15A]
X2M X1M Fan PCB (A2P) (R25861)

Si071951E PCBs / Reactor / Terminal Blocks
Removal Procedure 3
2
3
Remove the screw of
the earth/ground wire.
Unfasten the 3 hooks
and remove the main
PCB (A1P).
4. Remove the fan PCB
(A2P).
[X6A]: reactor
[X8A]: fan motor
[X10A]: terminal block (X1M)
1 Disconnect the
connectors [X6A], [X8A]
and [X10A].
2 Detach the 4 spacers
and remove the fan
PCB (A2P).
Step Procedure Points
Main PCB (A1P) Hook Earth/ground wire
(R25862)
[X6A]
[X8A]
[X10A] (R25863)
Fan PCB (A2P) Spacer
Spacer
(R25864)

PCBs / Reactor / Terminal Blocks Si071951E
4Removal Procedure
5. Remove the reactor.
1
2
Release the reactor
harness from the 2 wire
clips.
Remove the 2 screws,
and then the reactor.
6. Remove the terminal
blocks.
M4×25
1
2
3
4
5
Remove the screw of
the earth/ground wire.
Disconnect the
connecting wires of the
terminal block (X1M).
Remove the screw and
then the terminal block
(X1M).
Disconnect the
connecting wires of the
terminal block (X2M).
Remove the 2 screws
and then the terminal
block (X2M).
Step Procedure Points
Wire clipReactor
(R25865)
Terminal block (X2M) Terminal block (X1M)
#
Earth/ground wire
(R25866)

Si071951E Fan Motor / Fan Rotor
Removal Procedure 5
2. Fan Motor / Fan Rotor
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Remove the fan motor
connector.
Open the electrical box
cover beforehand.
[X8A]: fan motor
1
2
Disconnect the
connector [X8A].
Release the fan motor
harness from the 2 wire
clips.
2. Remove the fan cover/
plates.
Some models have 10
screws.
There is no hook around the
chamber cover. Be careful
not to drop it.
1 Remove the 8 screws
and then the chamber
cover.
2
3
Remove the 3 screws
and then the cover
plate.
Remove the 5 screws
and then the bottom
plate (3).
Some models do not have
the cover plate.
Some models have 6
screws.
Wire clip
[X8A]
(R25867)
Bottom view from suction side
Chamber cover (R25868)
Cover plate
Bottom view
Bottom plate (3) (R25869)

Fan Motor / Fan Rotor Si071951E
6Removal Procedure
3. Remove the fan housing. The number of the fan rotor
varies depending on the
models.
1 Unfasten the 2 hooks
and then remove the
fan housing (lower).
4. Release the fan motor
lead wire.
When reassembling, fan
motor lead wire should be
bundled and fixed with the
wire clamp material.
1 Cut the 2 clamps and
release the fan motor
lead wire from the wire
clamp material.
2 Cut the clamp.
Step Procedure Points
Hook
Fan housing (lower) (R25870)
Side view from suction side
Wire clamp material
Clamp
(R25871)
Wire clamp
material
Fan motor
lead wire
(R25897)
Clamp
Bottom view
(R25872)

Si071951E Fan Motor / Fan Rotor
Removal Procedure 7
5. Remove the fan motor. There is no hook around the
fan motor. Always support
the fan motor to prevent it
from dropping off while
loosening the screws.
1
2
3
Loosen the 2 screws.
Unfasten the 2 hooks
and remove the fan
motor fixing plate.
Remove the other fan
motor fixing plate in the
same way.
4 Remove the fan rotor
ASSY.
5 Use a hexagonal
wrench key to remove
the fan rotor fixing
screw and remove the
fan motor.
Step Procedure Points
Fan motor
fixing plate
Fan motor fixing plate
Hook
Hook
Screw
(R25873)
Fan rotor ASSY
(R25874)
Fan motorFan rotor fixing screw
(R25875)

Drain Pan Si071951E
8Removal Procedure
3. Drain Pan
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1. Detach the drain hose. If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
Be careful not to wet the
floor with remaining drain.
1 Loosen the screw of the
drain hose band and
detach the drain hose.
2. Remove the bottom
plates.
Some models have 10
screws.
There is no hook around the
chamber cover. Be careful
not to drop it.
1 Remove the 8 screws
and then the chamber
cover.
2 Remove the 5 screws
and then the bottom
plate (3).
Some models have 6
screws.
Drain hose Drain hose band screw (R25876)
Bottom view from suction side
Chamber cover (R25868)
Bottom view
Bottom plate (3) (R25877)