Daikin RKH35QRV16 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
2.5/3.5 kW Class
Si001407EB

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only
RKH35QRV16
RKH35RRV16
RKP25PRV16
RKP35PRV16
RKP25QRV16
RKP35QRV16
RKPA25QRV16
RKPA35QRV16
RKPD25QRV16
RKPD35QRV16

Si001407EB
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Fan Motor................................................................................................4
3. Electrical Box ..........................................................................................6
4. Thermistor ASSY ....................................................................................8
5. PCB.........................................................................................................9
6. Reactor / Partition Plate ........................................................................11
7. Sound Blankets .....................................................................................12
8. Capillary Tube .......................................................................................13
9. Compressor...........................................................................................15
Note: The illustrations may be slightly different depending on the model.

Outer Panels Si001407EB
2Removal Procedure
1. Outer Panels
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the screw of
the stop valve cover.
Pull down the stop
valve cover and remove
it.
The stop valve cover is
united with the shield plate.
When reassembling, make
sure to fit the 5 hooks.
3
4
Remove the 2 screws,
and then the top panel.
Remove the 4 screws,
and then the discharge
grille.
The discharge grille has 4
hooks.
5 Remove the 7 screws,
and then the front
panel.
The front panel has 4 hooks.
Stop valve
cover
(R20256)
Hook
(R20257)
Top panel
Discharge grille (R20258)
(R20259)
Front panel (R20260) (R20261)

Si001407EB Outer Panels
Removal Procedure 3
6
7
Release the outdoor
temperature thermistor.
Lift up the guard net
and remove it.
Be careful not to cut your
finger on the fins of the
outdoor heat exchanger.
8
9
Remove the 3 screws,
and then the wire
fixture.
Remove the 7 screws
on the terminal board
and disconnect both the
connecting wire and the
power supply wire.
10
11
Remove the 7 screws
on the right side panel.
Lift up the right side
panel and remove it.
When reassembling, make
sure to fit the hooks on the
right and rear side.
Step Procedure Points
Guard net
Outdoor temperature thermistor
(R20262)
Wire fixture
Terminal board
Connecting wire
Power supply wire
(R20263)
Right side panel
Hook
Hook
(R20264)
(R22578)

Fan Motor Si001407EB
4Removal Procedure
2. Fan Motor
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the nut of the
outdoor fan.
Remove the outdoor
fan.
You can remove the fan
without removing the right
side panel.
Nut size: M6
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
3 Disconnect the
connector [S70].
[S70]: fan motor
4 Release the fan motor
lead wire from the
groove and the hook.
Some models do not have
the hook.
Outdoor fan
Nut
(R23487)
10 mm
(0.39 inch)
(R18954)
[S70]
(R20266)
Hook Groove
Fan motor
lead wire
(R22579)

Si001407EB Fan Motor
Removal Procedure 5
5 Remove the screw and,
then the fan motor
fixing frame.
When reassembling, fit the 2
lower hooks into the bottom
frame.
6 Unfasten the 2 hooks
and release the fan
motor lead wire.
7 Remove the 4 screws,
and then the fan motor.
When reassembling, put the
fan motor lead wire through
the back of the fan motor to
avoid any entanglement with
the outdoor fan.
Step Procedure Points
Fan motor fixing
frame
(R20268)
Hook
(R20269)
(R22580)
Fan motor lead wire
(R22581)
Fan motor
(R3249)
Lead wire Outdoor fan

Electrical Box Si001407EB
6Removal Procedure
3. Electrical Box
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Cut the clamp.
2 Disconnect the
connector [S30].
[S30]: compressor
3 Disconnect the
connector [S40].
[S40]: overload protector
Clamp
(R23488)
[S30]
(R20273)
[S40]
(R20274)

Si001407EB Electrical Box
Removal Procedure 7
4 Disconnect the 2
connectors for the
reactor.
5
6
Disconnect the
connector [S90].
Cut the clamp.
[S90]: thermistors
7 Lift up and remove the
electrical box.
Step Procedure Points
Reactor
Brown
Orange
(R20275)
[S90] Clamp
(R20276)
Electrical box
(R23489)

Thermistor ASSY Si001407EB
8Removal Procedure
4. Thermistor ASSY
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1 Release the discharge
pipe thermistor.
Be careful not to lose the
fixture for the thermistor.
2
3
Cut the clamp.
Pull out the outdoor
heat exchanger
thermistor.
The positions of the clamp
and outdoor heat exchanger
thermistor vary depending
on the model.
Be careful not to lose the clip
for the thermistor.
4Remove the thermistor
ASSY.
Discharge pipe
thermistor
(R20278)
(R20430)
Fixture
Clamp
Outdoor heat
exchanger
thermistor
(R20279)
(R3264)
Clip
(R23490)
Thermistor ASSY

Si001407EB PCB
Removal Procedure 9
5. PCB
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 screw on
the terminal board.
You can remove the main
PCB when you disconnect
the lead wires on the
terminal board without
removing the terminal board.
2
3
Remove the earth/
ground screw (lower).
Disconnect all the
terminals from the
terminal board.
4 Cut the clamp.
Terminal board
(R23491)
(R23493)
Earth/ground
screw (lower)
(R23492)
White
RedBlack
Green
(earth/ground)
Clamp
(R20283)

PCB Si001407EB
10 Removal Procedure
5 Remove the 4 screws.
6 Unfasten the 4 hooks
and remove the PCB.
Step Procedure Points
(R20284)
Hook
Hook
(R23494)

Si001407EB Reactor / Partition Plate
Removal Procedure 11
6. Reactor / Partition Plate
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.
1
2
Remove the screw.
Slide the reactor to the
left and remove the
reactor.
2. Remove the partition
plate.
1 Remove the 2 screws.
2 Lift and remove the
partition plate.
When reassembling, fit the 2
lower hooks into the bottom
frame.
Reactor
(R23495)
(R20287)
Partition plate Hook (R23496)

Sound Blankets Si001407EB
12 Removal Procedure
7. Sound Blankets
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1
2
Remove the sound
blanket (top).
Remove the sound
blanket (outer).
Since the piping ports are
torn easily, remove the
sound blankets carefully.
The design of the sound
blankets varies depending
on the model.
Some models have the
sound blanket (top inner).
3 Remove the sound
blanket (inner).
4 Remove the sound
blanket (bottom).
(R20289)
Sound blanket
(outer)
Sound blanket (top)
Sound blanket (inner) (R20290)
Sound blanket
(bottom)
(R20291)

Si001407EB Capillary Tube
Removal Procedure 13
8. Capillary Tube
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by
the gas brazing machine.
If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is
exposed to flames, toxic gas may be generated.)
Caution From the viewpoint of global environment protection, do not discharge the refrigerant
gas in the atmosphere. Make sure to collect all the refrigerant gas.
Restore the piping by non-oxidation brazing.
Note Before working, make sure that the refrigerant gas is empty in the circuit.
Be sure to apply nitrogen replacement when heating up the brazed part.
Do not use a metal saw for cutting pipes by all means because the sawdust comes into
the circuit.
When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
may get deformed.
Provide a protective sheet or a steel plate so that the brazing flame cannot influence
peripheries.
Be careful so as not to burn the compressor terminals, the name plate, the outdoor
heat exchanger fin.
In case of difficulty with gas brazing machine
1. Disconnect the brazed part where is easy to disconnect and restore.
2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
Step Procedure Points
1 Remove the terminal
cover.
Terminal
cover
(R20292)

Capillary Tube Si001407EB
14 Removal Procedure
2
3
Disconnect the lead
wires of the compressor
and the overload
protector.
Remove the protection
bushing.
4
5
6
Remove the putties, if
any.
Heat up the 2 brazed
parts and withdraw the
piping with pliers.
Remove the capillary
tube.
The shape of the capillary
tube varies depending on the
model.
Step Procedure Points
Protection bushing
Overload
protector
V (yellow)
W (blue)
W (red)
(R20293)
(R20294)
(R20428)

Si001407EB Compressor
Removal Procedure 15
9. Compressor
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Be careful not to get yourself burnt with the pipes and other parts that are heated by
the gas brazing machine.
If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is
exposed to flames, toxic gas may be generated.)
Since it may happen that the refrigerant oil in the compressor catches fire, prepare wet
cloth so as to extinguish fire immediately.
Caution From the viewpoint of global environment protection, do not discharge the refrigerant
gas in the atmosphere. Make sure to collect all the refrigerant gas.
Restore the piping by non-oxidation brazing.
Note Before working, make sure that the refrigerant gas is empty in the circuit.
Be sure to apply nitrogen replacement when heating up the brazed part.
Do not use a metal saw for cutting pipes by all means because the sawdust comes into
the circuit.
When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes
may get deformed.
Provide a protective sheet or a steel plate so that the brazing flame cannot influence
peripheries.
Be careful so as not to burn the compressor terminals, the name plate, the outdoor
heat exchanger fin.
In case of difficulty with gas brazing machine
1. Disconnect the brazed part where is easy to disconnect and restore.
2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
Step Procedure Points
1 Remove the terminal
cover.
Terminal
cover
(R20292)

Compressor Si001407EB
16 Removal Procedure
2
3
Disconnect the lead
wires of the compressor
and the overload
protector.
Remove the protection
bushing.
4
5
6
7
Remove the putties, if
any.
Heat up the 2 brazed
parts and disconnect
the pipings.
Remove the 3 nuts of
the compressor.
Lift up the compressor
and remove it.
Step Procedure Points
Protection bushing
Overload
protector
V (yellow)
W (blue)
W (red)
(R20293)
Nut (R22592)

Revision History
Month / Year Version Revised contents
05 / 2014 Si001407E First edition
11 / 2015 Si001407EA Model addition: RKP25/35QRV16, RKPA25/35QRV16, RKPD25/35QRV16
07 / 2016 Si001407EB Model addition: RKH35QRV16, RKH35RRV16

Head Office:
Umeda Center Bldg., 2-4-12, Nakazaki-Nishi,
Kita-ku, Osaka, 530-8323 Japan
Tokyo Office:
JR Shinagawa East Bldg., 2-18-1, Konan,
Minato-ku, Tokyo, 108-0075 Japan
http://www.daikin.com/products/ac/
All rights reserved
c
Warning
zDaikin products are manufactured for export to numerous countries throughout the world. Prior to
purchase, please confirm with your local authorised importer, distributor and/or retailer whether this
product conforms to the applicable standards, and is suitable for use, in the region where the product
will be used. This statement does not purport to exclude, restrict or modify the application of any local
legislation.
zAsk a qualified installer or contractor to install this product. Do not try to install the product yourself.
Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.
zUse only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or
contractor to install those parts and accessories. Use of unauthorised parts and accessories or
improper installation of parts and accessories can result in water or refrigerant leakage, electrical
shock, fire or explosion.
zRead the user's manual carefully before using this product. The user's manual provides important
safety instructions and warnings. Be sure to follow these instructions and warnings.
If you have any enquiries, please contact your local importer, distributor and/or retailer.
Cautions on product corrosion
1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced.
2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided. If you need to install
the outdoor unit close to the sea shore, contact your local distributor.
Dealer
zSpecifications, designs and other content appearing in this brochure are current as of July 2016 but subject to change without notice. Si001407EB
07/2016 AK.B