Daikin RXF125KC User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
2.5/3.5 kW Class
Outdoor Unit
Inverter
Pair Type
Si001157

Service Manual
Removal Procedure
Outdoor Unit
Applicable Models
zHeat Pump
RXF125KC
RXF135KC
RZS235KC
RZS235KCG
RZS235KCP
RZS235KCS

Si001157
Removal Procedure 1
Table of Contents
1. Removal of Outer Panels / Fan Motor.....................................................2
2. Removal of Electrical Box .......................................................................9
3. Removal of PCBs..................................................................................12
4. Removal of Reactor / Partition Plate .....................................................17
5. Removal of Sound Blankets..................................................................19
6. Removal of Thermistor ASSY ...............................................................21
7. Removal of Four Way Valve .................................................................22
8. Removal of Compressor .......................................................................25
Note: The illustrations may be slightly different depending on the model.

Removal of Outer Panels / Fan Motor Si001157
2Removal Procedure
1. Removal of Outer Panels / 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. Appearance features
Take care not to cut your
finger by the fins of the
outdoor heat exchanger.
2. Remove the panels.
The stop valve cover is
united with the shield plate.
When reassembling, make
sure to fit the 5 hooks.
1Remove the screw of
the stop valve cover.
Pull down the stop
valve cover and remove
it.
(R7186)
(R3236)
(R7188)
Stop
valve
cover
(R7189)
Shield plate
Hook

Si001157 Removal of Outer Panels / Fan Motor
Removal Procedure 3
2Remove the 2 screws
and lift the top panel.
3Remove the drip proof
plate.
4Remove the 4 screws
and remove the
discharge grille.
The discharge grille has 4
hooks.
Step Procedure Points
Top panel
(R7190)
(R7191)
Drip proof plate
(R12569)
Discharge grille
(R12570)

Removal of Outer Panels / Fan Motor Si001157
4Removal Procedure
5Remove the 8 screws
of the front panel.
6Unfasten the hooks.
Pull and remove the
front panel.
The front panel has 4 hooks.
3. Remove the fan motor. Nut size: M6
1Remove the nut of the
outdoor fan.
2Remove the outdoor
fan.
When reassembling, align
the mark of the outdoor
fan with the D-cut section of
the motor shaft.
Step Procedure Points
(R12571)
Front panel
(R12572)
Hook
Outdoor fan (R15669)
10 mm
(R12236)
(R12574)
D-cut

Si001157 Removal of Outer Panels / Fan Motor
Removal Procedure 5
3Release the outdoor
temperature thermistor.
4Disconnect the
connector for the fan
motor [S70].
5Release the fan motor
lead wire from the hook.
Step Procedure Points
(R11829)
Outdoor temperature
thermistor
[S70]
(R15680)
Fan motor
lead wire
(R12576)

Removal of Outer Panels / Fan Motor Si001157
6Removal Procedure
6Remove the screw of
the fan motor fixing
frame.
7Lift and remove the fan
motor fixing frame.
When reassembling, fit the
lower hooks into the bottom
frame.
Step Procedure Points
(R12577)
Fan motor fixing frame
(R12578)
(R7206)(R7206)

Si001157 Removal of Outer Panels / Fan Motor
Removal Procedure 7
8Release the fan motor
lead wire from the 2
hooks.
When reassembling, put the
fan motor lead wire through
the back of the fan motor so
as not to be entangled with
the outdoor fan.
9Remove the 4 screws
and remove the fan
motor.
4. Remove the right side
panel.
1Remove the 7 screws
on the right side panel.
2Unfasten the hook on
the rear side.
When reassembling, make
sure to fit the hook.
Step Procedure Points
(R12579)
Lead wire Outdoor fan
(R12215)
(R12580)
Fan motor
(R15670)
Right side panel
(R12584)

Removal of Outer Panels / Fan Motor Si001157
8Removal Procedure
3Lift up the right side
panel and remove it.
When reassembling, make
sure to fit the hook.
Step Procedure Points
(R12585)
Hook

Si001157 Removal of Electrical Box
Removal Procedure 9
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
1Disconnect the 2
connectors for the
reactor.
Preparation
Remove the panels and
disconnect the connector for
the fan motor according to
the “Removal of Outer
Panels / Fan Motor”.
Rear: Brown
Front: White
2Disconnect the relay
connector for the
compressor.
3Disconnect the
connector for the
thermistors [S90].
When reassembling, coil the
excessive lead wire and
hang the loop on the hook.
(R12586)
(R15671)
[S90]
(R15672)

Removal of Electrical Box Si001157
10 Removal Procedure
4Disconnect the
connector for the
overload protector
[S40].
5Disconnect the
connector for the
electronic expansion
valve coil [S20].
6Disconnect the
connector for the four
way valve coil [S80].
Step Procedure Points
(R12589)
[S40]
(R12590)
[S20]
(R12591)
[S80]

Si001157 Removal of Electrical Box
Removal Procedure 11
7Lift and remove the
electrical box.
Step Procedure Points
(R13179)
Electrical box

Removal of PCBs Si001157
12 Removal Procedure
3. Removal of PCBs
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 main PCB. You can remove the main
PCB when you disconnect
the lead wires on the
terminal board without
removing the electrical box.
1Feature of the main
PCB
2Cut the 3 clamps.
3Release the harnesses.
(R12593)
(R12594)
(R12595)

Si001157 Removal of PCBs
Removal Procedure 13
4Disconnect the
connector for the filter
PCB [S10].
5Disconnect the
connector for the filter
PCB [HL3].
6Disconnect the
connector for the filter
PCB [HN3].
7Remove the 6 screws.
Step Procedure Points
(R12596)
[S10]
(R12598)
[HL3]
(R12599)
[HN3]
(R12600)

Removal of PCBs Si001157
14 Removal Procedure
8Unfasten the 2 hooks
on the lower side.
The electrical box has also 2
hooks on the upper side.
When reassembling, be sure
to fit all the 4 hooks.
9Lift and pull out the
main PCB.
[S10] [HL3] [HN3]: filter PCB
[S20]: electronic expansion
valve coil
[S40]: overload protector
[S70]: fan motor
[S80]: four way valve coil
[S90]: thermistors
Step Procedure Points
(R13201)
(R12602)
(R12603)
[HN3]
[HL3]
[S80]
[S20]
[S40]
[S70]
[S10][S90]

Si001157 Removal of PCBs
Removal Procedure 15
2. Remove the filter PCB.
1Remove the 2 screws
and release the earth
wires.
2Disconnect the
connectors from the
terminal board.
1 : black, upper
2 : white, lower
3 : red, upper
: green, lower
3Release the harnesses
from the groove.
Step Procedure Points
Earth wire (R17485)
(R12605)
(R12606)

Removal of PCBs Si001157
16 Removal Procedure
4Release the harnesses
from the hook.
5Remove the screw.
6Unfasten the 2 hooks
and remove the filter
PCB.
Step Procedure Points
(R12607)
(R12608)
(R12609)
Filter PCB
(R12610)

Si001157 Removal of Reactor / Partition Plate
Removal Procedure 17
4. 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
1Remove the screw and
remove the reactor.
Remove the panels
according to the “Removal of
Outer Panels / Fan Motor”.
Remove the electrical box
according to the “Removal of
Electrical Box”.
When reassembling, be sure
to fit the 3 hooks of the
reactor.
2. Remove the partition
plate.
1Remove the 2 screws.
Reactor
(R12611)
(R12612)
(R12613)
Partition plate

Removal of Reactor / Partition Plate Si001157
18 Removal Procedure
2The partition plate has
2 hooks on the lower
side. Lift and pull the
partition plate and
remove it.
When reassembling, fit the
lower hooks into the bottom
frame.
Step Procedure Points
(R12614)
Hook