Daikin Quaternity RXG09HVJU User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
9000/12000/15000 Btu/h Class
Outdoor Unit
Inverter
Pair Type
Si00-979

Service Manual
Removal Procedure
Outdoor Unit
zHeat Pump
RXG09HVJU
RXG12HVJU
RXG15HVJU

Si00-979
Removal Procedure 1
Table of Contents
1. Removal of Outdoor Fan / Fan Motor .....................................................2
2. Removal of Electrical Box .......................................................................6
3. Removal of PCB....................................................................................10
4. Removal of Sound Blankets..................................................................13
5. Removal of Thermistor Assembly .........................................................15
6. Removal of Reactor / Partition Plate .....................................................17
7. Removal of Four Way Valve .................................................................18
8. Removal of Electronic Expansion Valve ...............................................20
9. Removal of Compressor .......................................................................21
Note: The illustrations may be slightly different depending on the model.

Removal of Outdoor Fan / Fan Motor Si00-979
2Removal Procedure
1. Removal of Outdoor Fan / Fan Motor
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1. Removal of the top panel
1Remove the 2 screws
of the top panel.
2. Remove the front panel
1Remove the 7 screws
of the front panel.
There are 5 hooks in
total of right and left.
Lift the front panel and
pull it out toward
yourself.
2Remove the 4 screws
to remove the front
grille.
(R10197)
(R10196)
Front panel
Front grille
(R10198)

Si00-979 Removal of Outdoor Fan / Fan Motor
Removal Procedure 3
3Remove the screw and
remove the stop valve
cover.
3. Removal of the propeller
fan
When assembling, align the
mark of the outdoor fan
and the D cut section of the
motor shaft.
1Remove the fan fixing
nut and remove the
propeller fan.
When assembling the fan
motor, let the zmark go
upper. (The direction of the
lead wire outlet.)
Remove the fan fixing nut
with the 13 mm wrench.
4. Removal of the fan motor
1Disconnect the fan
motor connector [S70]
from PCB.
Step Procedure Points
(R10199)
D cut
(R5833)
mark
(R5834)
mark
mark
Fan fixing nut
13 mm (R5835)
(R10200)
[S70]

Removal of Outdoor Fan / Fan Motor Si00-979
4Removal Procedure
2Detach the lead wire
for fan motor and pass
the lead wire
downward through the
opening.
3Remove the screw of
the fan motor fixing
plate.
4Detach the upper part
of the fan motor fixing
plate.
5Fan motor fixing plate
has the 2 hooks on
lower part.
Step Procedure Points
(R10201)
Lead wire for fan motor
(R10202)
(R5839)
(R5840)

Si00-979 Removal of Outdoor Fan / Fan Motor
Removal Procedure 5
6Release the fixing hook
for lead wire and
detach the lead wire.
When assembling, put the
lead wire through the back
of the motor. (so as not to
be entangled with the
propeller fan)
7Remove the 4 screws
of the fan motor.
8Pull out the rubber
vibration isolators
sideward.
Step Procedure Points
(R10203)
(R3249)
Lead wire Propeller fan

Removal of Electrical Box Si00-979
6Removal Procedure
2. Removal of Electrical Box
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1. Disconnect the wire
harnesses of the PCB
Preparation
Remove the front panel
according to "Removal of
Outdoor Fan / Fan Motor".
1Disconnect the
connector for the fan
motor [S70].
2Disconnect the
connector for the four
way valve coil [S80].
3Disconnect the
connector for the
electronic expansion
valve coil [S20].
4Disconnect the
connector for the
thermistor assembly
[S90].
(R14006)
[S70]
[S80]
(R14007)
(R14050)
[S20]
[S90]
(R14009)

Si00-979 Removal of Electrical Box
Removal Procedure 7
5Disconnect the 2
terminals from the
reactor.
6Disconnect the relay
harness for the
compressor.
2. Disconnect the power
supply / connecting wiring
1Remove the 2 screws
of the radiation shield
plate to remove.
Step Procedure Points
(R14053)
Orange
Purple
(R14010)
(R10210)
Radiation shield plate

Removal of Electrical Box Si00-979
8Removal Procedure
2Remove the screw of
the earth / ground wire.
3Disconnect all the
connecting wires.
4 Disconnect the
connectors black
(power supply), white
(power supply), and
red (signal).
Black-power supply
White-power supply
Red-signal
Step Procedure Points
(R18586)
Earth / ground
(R10212)
Black
White Red
(R0147)
Green/Yellow

Si00-979 Removal of Electrical Box
Removal Procedure 9
5 Detach the clamp for
the thermistor
assembly from the
electrical box.
6 Remove the 2 screws
of the electrical box.
7 Lift the electrical box
and remove it.
Step Procedure Points
Clamp (R14012)
(R14013)
Electrical box
(R14014)

Removal of PCB Si00-979
10 Removal Procedure
3. Removal of PCB
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Remove the screw of
the electrical box
(cover).
Lift the electrical box
(cover) and remove.
Preparation
Remove the electrical box
according to "Removal of
Electrical Box".
2Lift the insulation sheet
and remove.
3Remove the 5 screws
for the PCB or the
radiation fin.
(R10217)
(R10218)
(R10219)

Si00-979 Removal of PCB
Removal Procedure 11
4Detach the radiation
fin.
In working, be careful not to
break the PCB with the
excessive force because
the PCB and the radiation
fin are adhered to one
another.
When reassembling, make
sure to use the silicon
material.
5Remove the 2 screws
and detach the clip to
remove the radiation
shield plate.
6Cut the 3 clamps.
7Remove the 2 screws.
Step Procedure Points
(R5861)
Radiation fin
(R5862)
Clip
Radiation shield
plate
(R14016)
(R5864)
(R5865)

Removal of PCB Si00-979
12 Removal Procedure
8Unfasten the 3 hooks
of the electrical box.
9Remove the PCB from
the electrical box.
10 Disconnect the
connectors.
S20 : Expansion valve
S45 : Thermal fuse
S70 : Fan motor
S80 : Four way valve
S90 : Thermistor (outdoor
temperature / outdoor
heat exchanger /
discharge pipe)
Step Procedure Points
Hook
(R14017)
(R5867)
.
(R10227)
S90 S80 S20LED5(green)
Fuse
3.15A 250V HH1(orange)
Varistor
LEDA(green)
S45S70
Fuse
3.15A 250V

Si00-979 Removal of Sound Blankets
Removal Procedure 13
4. Removal of Sound Blankets
Procedure 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 right side
panel.
Preparation
Remove the electrical box
according to "Removal of
Electrical Box".
1Remove the 3 screws
on the back side of the
right side panel.
2Remove the 2 screws.
3Lift the right side panel
to unfasten the 2 hooks
and remove it.
2. Remove the sound
blankets.
Since the piping ports on
the sound blanket are torn
easily, remove the blanket
carefully.
1Remove the sound
blanket (top).
(R14018)
(R14019)
(R14055)
Sound blanket (top)

Removal of Sound Blankets Si00-979
14 Removal Procedure
2Untie the strings and
open the sound blanket
(outer).
3Pull the sound blanket
(outer) out.
Since the piping ports on
the sound blanket are torn
easily, remove the blanket
carefully.
4Open the sound
blanket (inner) and pull
it out.
Step Procedure Points
(R14023)
Sound blanket
(outer)
(R14020)
(R10233)

Si00-979 Removal of Thermistor Assembly
Removal Procedure 15
5. Removal of Thermistor Assembly
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1The figure shows the
arrangement of the
thermistor assembly.
Preparation
Remove the electrical box
according to "Removal of
Electrical Box".
2Remove the 3 screws
on the back side of the
right side panel and
detach the outdoor
temperature thermistor.
3Remove the 2 screws.
4Lift the right side panel
to unfasten the 2 hooks
and remove it.
Outdoor temperature thermistor
Discharge pipe
thermistor
Outdoor
heat
exchanger
thermistor
(R5877)
(R14024)
Outdoor
temperature
thermistor
(R14019)

Removal of Thermistor Assembly Si00-979
16 Removal Procedure
5Pull out the outdoor
heat exchanger
thermistor.
Be careful not to loose the
clip for the thermistor.
6Remove the sound
blanket (top).
Since the piping ports on
the sound blanket are torn
easily, remove the blanket
carefully.
7Release the discharge
pipe thermistor.
Detach the discharge pipe
thermistor while opening the
thermistor fixing clip.
Be careful not to loose the
clip for the discharge pipe
thermistor.
Meet the edge of the
thermistor and the clip when
reassembling.
Step Procedure Points
(R5879)
(R14055)
Sound blanket (top)
(R5880)

Si00-979 Removal of Reactor / Partition Plate
Removal Procedure 17
6. Removal of Reactor / Partition Plate
Procedure 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 reactor. Preparation
Remove the sound blankets
according to "Removal of
Sound Blankets".
1Remove the screw and
remove the reactor.
2. Remove the partition plate.
1Remove the 2 screws.
2Lift the partition plate
and remove it.
When reassembling, make
sure to catch the lower hook
of the partition plate.
(R14056)
(R14057)
(R14025)
Partition plate
(R5884)

Removal of Four Way Valve Si00-979
18 Removal Procedure
7. Removal of Four Way Valve
Procedure Warning Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step Procedure Points
1Remove the screw and
remove the four way
valve coil.
Preparation
Remove the sound blankets
according to "Removal of
Sound Blankets".
2Pull out the electronic
expansion valve coil.
3Remove the putty.
Four way valve coil
(R5885)
(R14026)
Electronic expansion
valve coil
Putty
(R5887)