Daikin RXR35HV2C User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
3.5 kW Class
Si00-973

Service Manual
Removal Procedure
Outdoor Unit
zHeat Pump
RXR35HV2C

Si00-973
Removal Procedure 1
Table of Contents
1. Removal of Humidifier Unit .....................................................................2
2. Removal of Heater ASSY / Humidifying Rotor
(Moisture Adsorption Element) / Humidifying Rotor Motor......................5
3. Removal of Damper Motor ......................................................................8
4. Removal of Limit Switch / Humidifying Thermistor..................................9
5. Removal of Fan-valve-duct ASSY / Fan-valve ASSY / Duct ASSY ......12
6. Removal of Hygroscopic Fan Rotor / Hygroscopic Fan Motor ..............14
7. Removal of Panels and Plates ..............................................................15
8. Removal of Electrical Box .....................................................................17
9. Removal of PCB....................................................................................22
10.Removal of Sound Blankets..................................................................27
11.Removal of Outdoor Fan / Fan Motor ...................................................29
12.Removal of Thermistors ........................................................................32
13.Removal of Compressor .......................................................................33
14.Removal of Four Way Valve / Electronic Expansion Valve...................35

Removal of Humidifier Unit Si00-973
2Removal Procedure
1. Removal of Humidifier Unit
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. External appearance
2. Removal of the humidifier
unit
1Remove the 4 screws
and lift up the top panel
to remove.
}
(R10550)
Air outlet
Humidifier unit
(R10551)
Air inlet
(R10552)
Top panel

Si00-973 Removal of Humidifier Unit
Removal Procedure 3
2Remove the screw and
the hose cover.
3Pull out the humidifying
hose.
4The figure shows the
arrangement of the
relay harness.
Be sure to wait 10 minutes
or more after turning off the
power supply before
disconnecting the
connectors.
Step Procedure Points
(R10553)
Hose cover
(R10554)
Humidifying hose
(R9885)

Removal of Humidifier Unit Si00-973
4Removal Procedure
5Disconnect the 4 relay
connectors.
Do not pull the harnesses
from the outdoor unit
strongly so as not to loose
the hook of the mounting
plate.
(See the illustration below
on this page for the
mounting plate.)
6Disconnect the
connector for humidifier
fan motor.
Be sure to wait for 10
minutes or more after
turning off the power supply
before disconnecting the
connectors.
Pull out the connector while
pushing up the hook on the
bottom side.
When lifting up the
humidifier unit, be careful
not to pull the relay
harnesses forcibly.
When reassembling the
humidifier unit, make sure
the mounting plate is
hooked and do not forget to
connect the relay
connectors.
7Remove the 4 screws
of the humidifier unit
and lift it up to remove.
Step Procedure Points
(R9886)
Relay connectors
Humidifier fan motor (R9887)
<From the back side>
(R5796)
}
(R10555)
Mounting plate
Humidifier unit
Hook

Si00-973 Removal of Heater ASSY / Humidifying Rotor (Moisture Adsorption Element) / Humidifying Rotor Motor
Removal Procedure 5
2. Removal of Heater ASSY / Humidifying Rotor
(Moisture Adsorption Element) / Humidifying
Rotor Motor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
Internal structure of the
humidifier unit
Preparation
Remove the top panel
according to "Removal of
Humidifier Unit".
The humidifying rotor is
located under the heater
ASSY and the duct.
1. Removal of the heater
ASSY
1Remove the 4 screws
of the duct on
adsorption side.
2Detach the harness for
heater from the groove.
(R9889)
Duct (adsorption side)
Damper
motor
Limit switch
Harness ASSY
Humidifying
rotor motor
Fan-valve-duct ASSY Humidifying thermistor
Heater
ASSY
(R9890)
(R9891)

Removal of Heater ASSY / Humidifying Rotor (Moisture Adsorption Element) / Humidifying Rotor Motor Si00-973
6Removal Procedure
3Remove the duct.
4Release the lead wire
for humidifying rotor
motor from the 2
hooks.
5Remove the 2 screws
to remove the heater
ASSY.
Do not disassemble the
heater ASSY into small
parts.
2. Removal of the
humidifying rotor.
1Detach the lead wire
for fan motor from the
groove.
Step Procedure Points
(R9892)
Duct (adsorption side)
(R9893)
(R9894)
(R9898)
Fan motor lead wire

Si00-973 Removal of Heater ASSY / Humidifying Rotor (Moisture Adsorption Element) / Humidifying Rotor Motor
Removal Procedure 7
2Remove the bell mouth
on adsorption side.
3Lift the humidifying
rotor up to remove.
A heat catalyst (black) is
applied on the upper side.
3. Removal of the
humidifying rotor motor
1Disconnect the
connector for the
humidifying rotor
motor.
2Remove the 2 screws
of the humidifying rotor
motor.
Step Procedure Points
(R9899)
Bell mouth
(R9900)
Humidifying rotor
(R9901)
Rotor driving
part
(R9902)
Humidifying rotor
motor

Removal of Damper Motor Si00-973
8Removal Procedure
3. Removal of Damper Motor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Removal of the damper
motor
Disconnect the connector
for the humidifying rotor
motor.
1Disconnect the
connector for the
damper motor.
2Remove the 2 screws
and remove the
damper motor.
(R10348)
Harness ASSY
Humidifying thermistor
Damper
motor
(R0232)
(R0233)

Si00-973 Removal of Limit Switch / Humidifying Thermistor
Removal Procedure 9
4. Removal of Limit Switch / Humidifying Thermistor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Removal of the limit switch
1Open the hooks.
2Push up the limit switch
with a flat screwdriver.
(R10820)
Harness ASSY
Limit switch
(R0235)
(R0236)
Limit
switch

Removal of Limit Switch / Humidifying Thermistor Si00-973
10 Removal Procedure
3Disconnect the
terminals.
4Release the harness
from the hooks and
remove the harness
ASSY.
2. Removal of the
humidifying thermistor
When replacing the
humidifying thermistor,
order a seal material
together.
1Peel off the seal
material.
Step Procedure Points
(R0237)
(R0238)
(R0239)
(R0245)

Si00-973 Removal of Limit Switch / Humidifying Thermistor
Removal Procedure 11
2Pull out the humidifying
thermistor.
When reassembling, put the
harness through under the
limit switch cover.
Step Procedure Points
(R10548)
(R10547)
Limit switch cover

Removal of Fan-valve-duct ASSY / Fan-valve ASSY / Duct ASSY Si00-973
12 Removal Procedure
5. Removal of Fan-valve-duct ASSY / Fan-valve
ASSY / Duct ASSY
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
Preparation
Remove the heater ASSY
and the humidifying rotor.
The humidifying rotor is
located under the heater
ASSY and the duct.
1Remove the 7 screws
of the fan-valve-duct
ASSY.
2Release the 2 hooks on
the right side.
Release the hooks while
bending the right side panel.
(R10349)
Duct (adsorption side)
Harness ASSY
Fan-valve-duct ASSY
Humidifying
rotor motor
Heater
ASSY
(R0242)
Fan-valve-duct ASSY
(R0243)

Si00-973 Removal of Fan-valve-duct ASSY / Fan-valve ASSY / Duct ASSY
Removal Procedure 13
3Lift up the fan-valve-
duct ASSY to remove.
4Remove the 3 screws
to separate the fan-
valve ASSY from the
duct ASSY.
5To remove the fan-
valve ASSY, you do not
have to remove the
duct ASSY from the
humidifier unit.
Remove the 8 screws
at the beginning.
Do not disassemble the fan-
valve ASSY or the duct
ASSY. Replace them as
units.
Step Procedure Points
Fan-valve-duct ASSY
(R0244)
(R11140)
Fan-valve
ASSY
Fan-valve-
duct ASSY
Duct
ASSY
Screws
(R11141)
(R10558)
Fan-valve
ASSY

Removal of Hygroscopic Fan Rotor / Hygroscopic Fan Motor Si00-973
14 Removal Procedure
6. Removal of Hygroscopic Fan Rotor / Hygroscopic
Fan Motor
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Removal of the
hygroscopic fan rotor
ASSY
Preparation
Remove the humidifying
rotor according to "Removal
of Humidifying Rotor".
1Disconnect the
connector for fan motor
and remove the bell
mouth on adsorption
side.
2Unscrew the fan fixing
nut (M6) of the
hygroscopic fan rotor
ASSY (sirocco fan rotor
ASSY) and remove.
When reassembling, align
the mark and D cut of the
motor shaft.
Wrench size: 10 mm
2. Removal of the
hygroscopic fan motor
Lift the motor cover first and
pull out.
1Remove the 3 screws
of the motor cover.
2Remove the
hygroscopic fan motor.
(R9928)
Fan fixing
nut
Hygroscopic
fan rotor
ASSY
(R5821)
(R5822) (R5824)
(R5823)
Hygroscopic
fan motor
Motor cover

Si00-973 Removal of Panels and Plates
Removal Procedure 15
7. Removal of Panels and Plates
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1External appearance. Remove the humidifying
unit.
Do not release the mounting
plate at this point.
2Remove the 8 screws
to remove the front
panel.
The front panel has 4 hooks.
The bell mouth cannot be
removed.
(R10564)
(R10565)
Outdoor air thermistor
Liquid side
Gas side
(R10566)
Front panel

Removal of Panels and Plates Si00-973
16 Removal Procedure
3Remove the 4 screws
and release the 4 hooks
to remove the
discharge grille.
When reassembling, make
sure to fit the 4 hooks.
4Remove the screw of
the stop valve cover
and remove it.
The stop valve cover is
united with the shield plate.
When assembling the stop
valve cover, make sure to fit
the 5 hooks.
Step Procedure Points
(R10567)
Discharge grille
(R10568)
Stop valve cover
(R10569)
Shield plate

Si00-973 Removal of Electrical Box
Removal Procedure 17
8. Removal of Electrical Box
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Disconnect the
connecting wires
When reassembling, fasten
the wires with screws on the
terminal board.
The terminal board is united
resin formation.
1Remove the 3 screws
to remove the wiring
fixture.
Then, remove the all
screws to disconnect
the power supply cable
and the connecting
wires.
2. Removal of the electrical
box
1Release the outdoor
temperature thermistor
from the holder.
2Lift up the guard net to
remove.
Wire fixture
(R18542)
(R10571)
Outdoor temperature thermistor
(R10572)
Guard net

Removal of Electrical Box Si00-973
18 Removal Procedure
3Release the mounting
plate from the hook.
When reassembling, make
sure to hook the mounting
plate.
4Disconnect the
connector for the fan
motor [S70].
5Release the lead wire
for the fan motor from
the hooks.
Step Procedure Points
(R10573)
Mounting plate
(R10574)
[S70]
(R10575)