Daikin 4MXL36TVJU Manual de usuario
REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Multi Type
36000/48000 Btu/h Class
Si121858E
Service Manual
Removal Procedure
Outdoor Unit
Heat Pump
4MXL36TVJU
5MXS48TVJU
Si121858E
Removal Procedure 1
Table of Contents
1. Outer Panels ...........................................................................................2
2. Outdoor Fan / Fan Motor.........................................................................5
3. PCB.........................................................................................................8
4. Thermistor ASSY / Electronic Expansion Valve Coil for
Bypass Circuit / Four Way Valve Coil ...................................................12
5. Electrical Box / Partition Plate / Sound Blankets...................................16
6. Gas / Liquid Pipe Thermistor ASSY ......................................................18
7. Electronic Expansion Valve...................................................................19
8. Four Way Valve / Electronic Expansion Valve for Bypass Circuit.........21
9. Compressor...........................................................................................23
Note: The illustrations may be slightly different depending on the model.
Outer Panels Si121858E
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 Remove the 10 screws
and remove the top
panel.
2 Remove the 6 screws
and remove the right
side panel.
When reassembling, make
sure that the 2 hooks are
securely fastened.
3 Remove the screw and
remove the front panel
(2).
Top panel
(R25751)
Right side
panel
(R25752)
(R25753)
Front panel (2)
(R25754)
Si121858E Outer Panels
Removal Procedure 3
4 Remove the 8 screws
of the front panel (1).
5 Slide the fan motor
fixing frame to the left
and unfasten the 2
hooks.
6 Unfasten the hook and
remove the front panel
(1).
Step Procedure Points
Front
panel (1)
(R25755)
Hook
Fan motor fixing frame
(R25756)
Hook
(R25757)
Outer Panels Si121858E
4Removal Procedure
7 Remove the 4 screws
of the discharge grille.
8 Unfasten the 4 hooks
and remove the
discharge grille.
When reassembling, make
sure that the 4 hooks are
securely fastened.
Step Procedure Points
Discharge grille
(R25758)
Hook
Hook
(R25759)
Si121858E Outdoor Fan / Fan Motor
Removal Procedure 5
2. Outdoor Fan / 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. Remove the outdoor fan /
fan motor.
When reassembling, make
sure that the 2 hooks are
securely fastened.
Also, make sure not to
squash the harness.
1
2
Remove the 2 screws.
Slide upward and
remove the shield plate.
3
4
Disconnect the
connector [S70].
Cut the clamp.
[S70]: fan motor
5
6
Release the fan motor
lead wire from the 6
hooks and the groove.
Detach the wire clamp
material from the fan
motor lead wire.
When reassembling, wrap
around with the wire clamp
material 2 times or more
around the fan motor lead
wire at the position of the
clamp.
Shield plate
(R25760)
(R25761)
Clamp
[S70]
(R25762)
Wire clamp material Groove Hook
Hook
Fan motor
lead wire
(R25763)
(to fan motor)
(to main PCB)
Clamp Wire
clamp
material
(R25764)
Outdoor Fan / Fan Motor Si121858E
6Removal Procedure
7 Remove the nut and
remove the outdoor fan.
Nut size: M8
When reassembling, align
the mark of the outdoor fan
with the D-cut section of the
motor shaft.
8 Remove the 4 screws
and remove the fan
motor.
When reassembling, put the
fan motor lead wire through
the hole of the fan motor
mounting plate so as not to
be entangled with the
outdoor fan.
Step Procedure Points
D-cut
Outdoor fan
Washer
Nut
Mark
(R25765)
13 mm
(1/2 inch)
(R18965)
Fan motor
(R25766)
Lead wire Outdoor fan
(R3249)
Si121858E Outdoor Fan / Fan Motor
Removal Procedure 7
2. Tips for removing the fan. Fan and fan motor can be
removed without removing
the front panel (1).
1
2
3
4
Remove the top panel
and front panel (2) and
the right side panel.
Remove the shield
plate.
Disconnect the
connector [S70] and
release the fan motor
lead wire.
Remove the screw, and
unfasten the 2 hooks of
the fan motor fixing
frame.
5
6
Remove the 2 screws
at the bottom from the
top.
Pull out the fan motor
fixing frame and
outdoor fan from the
top.
Use a long screwdriver or a
jig.
For easy access to the
bottom part, top part of the
fan motor fixing frame can
be removed by removing 4
screws.
Step Procedure Points
Hook
Fan motor fixing frame
(R25767)
(R25768)
(R25853)
PCB Si121858E
8Removal Procedure
3. 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 main PCB.
1 Remove the 3 screws
and open the refrigerant
pipe fixing cover.
2
3
Disconnect the
connectors for
electronic expansion
valves.
Disconnect the 3
connectors.
[S20](white): room A
[S21](red): room B
[S22](blue): room C
[S23](yellow): room D
[S24](white): room E (5-room
model only)
[S40]: overload protector
[S201], [S202]: service monitor
PCB
4 Disconnect the 4
connectors.
[S25](red): electronic expansion
valve for bypass
circuit
[S90]: thermistor ASSY
[S92]: gas pipe thermistors
[S93]: liquid pipe thermistors
Refrigerant
pipe fixing
cover
(R25769)
[S202]
[S201]
[S40]
[S20]
[S21]
[S22] [S23] [S24] (R25770)
[S93]
[S25]
[S90] [S92] (R25771)
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