Daikin RMKD112DVM User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
11.2/14.0/16.0 kW Class
Outdoor Unit
Inverter
Multi Type
Si18-797

Service Manual
Removal Procedure
Outdoor Unit
zCooling Only zHeat Pump
RMKD112DVM RMXS112DV1A
RMKD140DVM RMXS140DV1A
RMKD160DVM RMXS160DV1A
RMKS112DV1A RMXS112DVLT
RMKS140DV1A RMXS140DVLT
RMKS160DV1A RMXS160DVLT
RMKS112DVM RMXS112DVM
RMKS140DVM RMXS140DVM
RMKS160DVM RMXS160DVM
zBP Unit
BPMKS967A2
BPMKS967A3
BPMKS967A2B
BPMKS967A3B

Si18-797
Removal Procedure 1
Table of Contents
1. Outdoor Unit............................................................................................2
1.1 Removal of Outer Panels .........................................................................2
1.2 Removal of PCB.......................................................................................9
1.3 Removal of Solenoid Valve, Four Way Valve and Motorized Valve.......20
1.4 Removal of Thermistor Assembly ..........................................................21
1.5 Removal of Fan Motor............................................................................22
2. BP Unit ..................................................................................................25
2.1 Removal of PCB.....................................................................................25
2.2 Removal of Solenoid Valve Coil .............................................................28
Note: The illustrations may be slightly different depending on the model.
The illustrations are for heat pump models as representative.

Outdoor Unit Si18-797
2Removal Procedure
1. Outdoor Unit
1.1 Removal of Outer Panels
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Appearance
Top panel
Front panel
Pipe outlet port
(Q0446)
Rear protective net
(Q0447)
Outdoor air
thermistor

Si18-797 Outdoor Unit
Removal Procedure 3
2. Remove the rear
protective net.
1Undo the 3 top hooks
first.
Bend the rear protective net
slightly for easy removal.
2Next, undo the 4 right-
side hooks. (See the
figure at bottom.)
3Remove the rear
protective net.
Step Procedure Points
Hooks
(Q0448)
(Q0449)
(Q0450)
Hooks

Outdoor Unit Si18-797
4Removal Procedure
3. Remove the top panel.
1Remove the 8 screws.
2Lift and remove the top
panel.
Step Procedure Points
(Q0451)
(Q0452)

Si18-797 Outdoor Unit
Removal Procedure 5
4. Remove the front panel.
1Remove the screw.
2Pull the front panel
toward yourself.
3There are 6 hooks on
the front panel. Slide
the front panel
downward to remove it.
Step Procedure Points
Screw
(Q0453)
(Q0454)

Outdoor Unit Si18-797
6Removal Procedure
5. Remove the pipe cover.
1Remove the screw.
2Pull the pipe cover
toward yourself.
3There are 3 hooks on
the pipe cover. Slide
the pipe cover upward
to remove it.
Step Procedure Points
(Q0455)
Screw
(Q0456)

Si18-797 Outdoor Unit
Removal Procedure 7
6. Right side panel
1Remove the 6 screws
off the panel's front.
2Remove the 3 screws
off the panel's back and
the 2 screws off the
panel's side.
3Remove the right side
panel.
Step Procedure Points
Screws
(Q0457)
Screws
Screws
(Q0458)
(Q0459)

Outdoor Unit Si18-797
8Removal Procedure
7. Remove the outdoor air
thermistor.
1Disconnect the outdoor
air thermistor holder.
Unhook the holder from
inside of the right side
panel for easy removal.
2The figure shows the
state after
disconnection.
Step Procedure Points
(Q0461)
Outdoor air thermistor holder
(Q0460)

Si18-797 Outdoor Unit
Removal Procedure 9
1.2 Removal of PCB
Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step Procedure Points
1. Remove the control PCB.
1Detach the 2 top
locking guard spacers.
2Remove the drip proof
cover.
3Disconnect the power
relay connector. (X1A)
Locking guard spacers.
Power filter PCB
Control PCB
Drip proof cover
(Q0462)
X1A
(Q0463)

Outdoor Unit Si18-797
10 Removal Procedure
4Disconnect the
connectors one by one.
[X2A] Solenoid valve (Hot gas)
[X3A] Solenoid valve
(Receiver gas purge)
[X5A] Solenoid valve
(4 way valve)
[X6A] Crankcase heater
[X22A]Transformer
[X23A]Transformer
[X25A]Connector for [X250A]
[X26A]Electronic expansion
valve(Main)
[X28A]Electronic expansion
valve(Sub cool)
[X34A]Discharge pipe
thermistor
[X37A]Heat exchanger
thermistor
[X44] Air thermistor
[X45A]Pressure sensor (Low)
[X46A]Pressure sensor (High)
5Detach the 16 locking
guard spacers.
The cooling only models do
not have the harness for
[X5A].
Preferably use long nose pliers
in removing the locking guard
spacers.
6Remove the control
PCB.
2. Remove the control PCB
mounting plate.
1Remove the 2 screws.
Step Procedure Points
[X25A] [X34A] [X37A] [X44A] [X45A]
[X46A]
[X6A]
[X5A]
[X3A]
[X2A]
[X28A]
[X26A]
[X23A]
[X22A]
(Q0464)
(Q0465)
(Q0466)
Screws
(Q0467)

Si18-797 Outdoor Unit
Removal Procedure 11
2Open the mounting
plate's right side toward
yourself.
3Remove the 2 clamps
from behind the
mounting plate.
4Disconnect the
connectors from the
power filter PCB and
cut off the clamps.
Earth / ground, Power terminals
NA (white) / LA (red) / X1A
(black)
The clamps are to be kept in
stock.
5Lift the mounting plate
and undo the 2 left side
hooks to remove it.
Step Procedure Points
Clamps
(Q0526)
Earth / ground NA LA X1A
(Q0469)
Hooks
(Q0470)

Outdoor Unit Si18-797
12 Removal Procedure
3. Remove the power filter
PCB.
1Cut off the 2 top clamps
and remove the drip
proof cover.
Cut off with nippers.
The clamp is to be kept in stock.
2Tilt up the compressor's
sound proof cover.
Using long nose pliers, pull out
the following.
U: Red
V: White
W: Blue
N: Brown
3Remove the terminal
cover.
4Disconnect the
compressor lead
connector (terminal).
Step Procedure Points
Clamps
Power filter PCB
Drip proof cover
(Q0527)
(Q0471)
Sound proof cover
Terminal
Terminal cover
(Q0473)
NW
UV

Si18-797 Outdoor Unit
Removal Procedure 13
5Release the
compressor lead out of
the groove.
6Remove the 2 clamps. Cut off with nippers.
Step Procedure Points
(Q0474)
(Q0475)

Outdoor Unit Si18-797
14 Removal Procedure
7Remove the screws of
the reactor leads.
8Remove the screw.
9The power filter PCB is
provided with 2 hooks.
Slide the PCB to the
right to unhook it.
Step Procedure Points
Screws (Q0476)
Screw
(Q0477)
Hooks
<Rear view>
(Q0478)

Si18-797 Outdoor Unit
Removal Procedure 15
4. Remove the electrical
assembly.
1Remove the clamp. Cut off with nippers.
The clamp is to be kept in stock.
2Lift the electrical
assembly to unhook it.
Step Procedure Points
(Q0479)
Hooks
Hook holes
Partition plate
(Q0480)
Electrical
assembly

Outdoor Unit Si18-797
16 Removal Procedure
3Disconnect the fan
motor relay connector.
pcs.: Red and white
Step Procedure Points
(Q0481)
(Q0482)

Si18-797 Outdoor Unit
Removal Procedure 17
4Disconnect the HPS
connector and the
electrical box connector
from each other.
HPS connector: Red
Electrical box connector: White
5Remove the clamp and
unbind the leads.
Cut off with nippers.
The clamp is to be kept in stock.
6Remove the clamp
(reactor lead).
Cut off with nippers.
7Remove the screw.
8Remove the clamp
(reactor lead).
Cut off with nippers.
9Remove the two clamps
and disconnect the
compressor lead.
Step Procedure Points
(Q0483)
(Q0484)
(Q0485)

Outdoor Unit Si18-797
18 Removal Procedure
10 Disconnect the fan
motor electrical box
relay connector.
Connector X206A: Red
Connector X207A: White
5. Remove the inverter PCB.
1Separate the power
filter PCB mounting
plate from the electrical
assembly.
There are two hooks. Slide the
plate to unhook it.
2Remove the reactor
connectors P1 and P2.
P1: White, P2: White
Step Procedure Points
(Q0486)
Hooks
(Q0487)
Inverter PCB (Q0488)