Daikin RXR28EV1B8 User manual

REMOVAL
PROCEDURE
SERVICE MANUAL
Outdoor Unit
Inverter
Pair Type
2.8/4.2/5.0 kW Class
Si001275

Service Manual
Removal Procedure
Outdoor Unit
zHeat Pump
RXR28EV1B8
RXR42EV1B8
RXR50EV1B8

Si001275
Removal Procedure 1
Table of Contents
1. Humidifier Unit.........................................................................................2
2. Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor ...........3
3. Humidifying Fan Assembly / Damper Assembly .....................................5
4. Hygroscopic Fan Motor...........................................................................7
5. Outdoor Fan / Fan Motor.........................................................................8
6. Humidifying Duct ...................................................................................12
7. Electrical Box ........................................................................................13
8. PCB.......................................................................................................15
9. Sound Blankets .....................................................................................17
10.Thermistor Assembly ............................................................................19
11.Reactor / Partition Plate ........................................................................21
12.Four Way Valve.....................................................................................22
13.Electronic Expansion Valve...................................................................24
14.Compressor...........................................................................................26
Note: The illustrations may be slightly different depending on the model.

Humidifier Unit Si001275
2Removal Procedure
1. Humidifier Unit
Warning Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
Step Procedure Points
1Remove the 4 screws
and remove the top
panel.
2Disconnect the 5 relay
connectors.
3Disconnect the
connector for the
humidifier fan motor.
Pull out the connector while
pushing up the hook on the
bottom side.
When installing the
humidifier unit, do not forget
to connect the relay
connectors.
4Remove the 4 screws
and remove the
humidifier unit.
(R13982)
Top panel
(R5792)
(R13983)
Humidifier fan motor
<From the back side>
(R5796)
(R13984)
Humidifier unit

Si001275 Heater Assembly / Humidifying Rotor / Humidifying Rotor Motor
Removal Procedure 3
2. Heater Assembly / Humidifying Rotor /
Humidifying Rotor 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 heater
assembly.
1Remove the 4 screws
and remove the duct on
adsorption side.
2Release the lead wire
for the humidifying
rotor motor from the
hooks.
3Remove the 2 screws
and remove the heater
assembly.
The heater assembly should
be replaced as an assembly
set. (Disassembling of the
assembly may cause
malfunction.)
2. Remove the humidifying
rotor.
1Release the fan motor
lead wire from the
hooks.
(R18766)
Duct on adsorption side
Heater assembly
(R18767)
Humidifying rotor motor
(R5800)
(R18768)
Fan motor lead wire
Hook
Hook