Fujitsu AUU18RCLX, AUU24RCLX Service manual

R410A

2 . CASSETTE TYPE :

AUU18RCLX

AUU24RCLX

D2D_AU019E/03

2007.06.11

2-1. FEATURE

MODELS :
AUU18RCLX / AOU18RLX
AUU24RCLX / AOU24RLX

CASSETTE TYPE

AUU18-24R

FEATURES

Easy maintenance

The control box is easily accessible for maintenance work
Wide opening for easy access.

Detachable,washable filter and intake grille.

Wide opening and long-life filter.

Long-life filter
High efficiency, long-life filter extends the cleaning cycle.

CASSETTE TYPE

AUU18-24R

Slim intake grille

Slim type intake grille can fit the ceiling after installation.

25/32

(20)

unit: in.(mm)

Group controller

One remote controller can control up to 16 air conditioners.
All of the air conditioners will be operated with the same settings.

Long-life filter

Connectable quantity : Maximum 16 indoor units for 1 remote controller.

- (02 - 01) -

Duct connection hole opening

Fresh air can be introduced through this opening.

Distribution
duct

CASSETTE TYPE

AUU18-24R

Fresh air

CASSETTE TYPE

AUU18-24R

Distribution
duct

Conditioned air can be distributed by means of a distribution duct.

Two-way

One-way

- (02 - 02) -

2-2. REMOTE CONTROLLER

2-2-1. WIRED REMOTE CONTROLLER

FEATURES

Various timer setup (ON / OFF / WEEKLY) are possible.

SUMOTUWETH FR SA

AM

7

3126 9

F

15 18 21

Equipped with weekly timer as standard function.
(2 times Start / Stop per day for a week)

CASSETTE TYPE

AUU18-24R

When setting up a timer, operation mode and a temperature

CASSETTE TYPE

AUU18-24R

setup can be changed.

When a failure occurs,the error code is displayed. (Maximum of 16)
Error indication.(A maximum of 16 error histories are memorizable.)

Easy installation with a slim shape with no boldge in the back.

Built in room temperature sensor.

High performance and compact size

Three functions are combined in
one unit.

Wired

remote

controller

Weekly

timer

Setback

timer

Built-in timers

Setback timerWeekly timer

Possible to set ON/OFF time to operate twice each day
of the week.

SUMOTUWETH FR SA

7

PM

3126 9

15 18 21

Setup screen example
[Set to Wednesday: AM8:00 to PM8:00,75 °F(24 °C)]

Easy-to-understand time bar display

SUMOTUWETH FR SA

AM

7

3126 9

15 18 21

F

Screen
after setup

75°F (24°C)

Possible to set temperature for two time spans and
for each day of the week.

SUMOTUWETH FR SA

PM

3126 9

15 18 21

Setup screen example
[Set from Sunday to Saturday: PM12:00 to PM3:00, 82°F(28 °C)]

82°F (28°C)

F

0 3 6 9 12 15 18 21

time O'clock time O'clock

12 3 6 9 12 3 6 9

AM PM

At "Weekly timer" + "Set back timer" setup

75°F 82°F 75°F

(24°C 28°C 24°C)

0 3 6 9 12 15 18 21

time O'clock

12 3 6 9 12 3 6 9

0 3 6 9 12 15 18 21

12 3 6 9 12 3 6 9

AM PM

75°F (24°C)

82°F (28°C)

AM PM

Easy-to-understand operation Simple installation

Components are compatible with standard
switch boxes. Flat back construction allows
equipment to be installed wherever it is
needed.

Timer
area

[

Variable timer control

]

The operation/display sections are zoned accord­ing to time and operation, enabling variable pro­gramming to match application.

Operation
area

European
switch box

JIS box

- (02 - 03) -

FUNCTIONS

1

START/STOP button

Pressed to start and stop operation.

2

Display

SUMOTUWETH FR

SA

AM
PM

369

12 15 18 21

CASSETTE TYPE

AUU18-24R

10

11

12

2
7
8

9

CLOCK ADJUST

SET BACK

DELETE SET

DAY OFF

F

14

DAY

ENERGY

THERMO

SAVE

SENSOR

1
3

4
6
5

13

Display panel

15

SUMOTUWETH FR

AM
PM

369

12 15 18 21

SA

F

16

1718 19

202122 23

Set Temperature button

Selects the setting temperature.

3

Master control button

Selects the operating mode(AUTO, HEAT, FAN, COOL, DRY).

4

Fan control button

Selects the fan speed (AUTO, LOW, MED, HIGH).

5

Energy save button

Turns the energy efficient mode on and off.

6

Thermo sensor button

Selects whether the room temperature is detected at the
indoor unit (remote sensor) or the remote controller.

7

Timer mode (CLOCK ADJUST) button

Selects the timer mode (OFF TIMER, ON TIMER, WEEKLY TIMER)

Set the current time.

8

Day (DAY OFF) button

Temporarily cancels of one day timer.

9

Set back button

pressed select the set back timer.

10

Set time button

Pessed to select the set back timer.

Delete button

11

The schedule of a weekly timer is deleted.

CASSETTE TYPE

AUU18-24R

SPECIFICATION

12

Set button

Sets the date, hour, minute and on-off time.

13

Vertical air flow direction and swing button

Push for two seconds to change the swing mode

14

Operation lamp

Lights during operation and when the timer is on.

15

Timer and clock display

16

Operation mode display

17

Fan speed display

Central control display

18

19

Temperature display

20

Stand by display
Indicates during defrosting operation.

21

Vertical swing display

22

Energy save display

23

Thermo sensor display

SIZE [H x W x D in. (mm)] 4-23/32 x 4-23/32 x 43/64 (120 x 120 x 17)

WEIGHT oz. (g) 5-21/35 (160)

CABLE LENGTH ft.( m )

POWER ( V )

33 (10)

12

- (02 - 04) -

2-3. SPECIFICATIONS

AUU24RCLX

AOU24RLX

Rows x Stages

Fin Pitch

FPI

Rows x Stages

Fin Pitch

FPI

1/4 (6.35) 3/8 (9.52)

1/2 (12.70) 5/8 (15.88)

lb. (Kg)

GROSS

154 (70)

DRAIN PIPE
SIZE

Inner diameter 32.0 (1 - 1/4)

REFRIGERANT
TYPE

REFRIGERANT OIL

TYPE

POWER SOURCE

AVAILABLE VOLTAGE RANGE

CAPACITY

COOLING

RATED/MAX

HEATING

RATED/MAX

TYPE

MODEL NAME

INDOOR

OUTDOOR

INPUT POWER

kW

CURRENT

A

STARTING CURRENT

MOISTURE REMOVAL

AIR
CIRCULATION
COOL/HEAT

INDOOR

CFM(m3/h)

OUTDOOR

FAN SPEED
COOL/HEAT
INDOOR

r.p.m

OUTDOOR

FAN TYPE x Q'ty

FAN MOTOR OUTPUT

W

NOISE LEVEL
(SOUND
PRESSURE)

COOL/HEAT

INDOOR

dB(A)

OUTDOOR

COMPRESSOR

TYPE

STARTING METHOD

HEAT
EXCHANGER
TYPE

INDOOR

Coil

Fin

OUTDOOR

Coil

Fin

CASING COLOR

DIMENSIONS
H × W × D

in. (mm)

PIPE

CONNECTION METHOD

SIZE

in. (mm)

MAX LENGTH

MAX HEIGHT

NET

OPERATION(OUTDOOR)

°F (°C)

REMOTE CONTROLLER TYPE

MATERIAL

GROSS

WEIGHT

NET

CASSETTE MODELS

INVERTER HEAT PUMP

208/230V 60Hz

187-253V 60Hz

TURBO × 1

PROPELLER × 1

42

100

DC TWIN ROTARY (INVERTER)

1300

Inverter

Copper tube

Aluminium

2 × 10

20

8 - 9/32 × 38 - 3/16 × 1-1/16 (210 × 970 × 26.6) [× 2 pieces]

Copper tube

Aluminium

2 × 38

20

31 - 13/32 × 35 - 7/16 × 1 - 7/16 (798 × 900 × 36.38)

White (5Y9/0.5NN)

Beige (10YR7.5/1.0NN)

9 - 11/16 × 32 - 11/16 × 32 - 11/16 (246 × 830 × 830)

32 - 11/16 × 35 - 7/16 × 13 (830 × 900 × 330)

13 - 31/32 × 41 - 23/32 × 40 - 11/32 (355 × 1060 × 1025)

38 - 3/16 × 41 - 11/32 × 17 - 17/32 (970 × 1050 × 445)

75 (34)

141 (64)

97 (44)

FLARE

164 (50) [chargeless:49 (15)]

66 (20)

R410A

WIRED

ABS

Outer diameter 37.0 (1 - 15/32)

4lb. 3oz. (1900)

POE

0 to 115 (-18 to 46)

14 to 75 (-10 to 24)

CASSETTE TYPE

AUU18-24R

SEER COOLING 16.0 15.0

HSPF HEATING 8.5 8.5

COOLING RATED/MAX 1.61 / 2.88 2.10 / 2.88

HEATING RATED/MAX 2.05 / 2.88 2.37 / 2.88

COOLING RATED/MAX 7.0 / 12.5 9.2 / 12.5

HEATING RATED/MAX 8.9 / 12.5 10.4 / 12.5

High 559 / 495 (950 / 840) 618 / 548 (1050 / 930)

Med 477 / 424 (810 / 720) 536 / 465 (910 / 790)

Low 394 / 365 (670 / 620) 435 / 395 (740 / 670)

Quiet - -

High 1942 / 1942 (3300 / 3300) 2119 / 2237 (3600 / 3800)

Low - -

High 450 / 400 490 / 440

Med 390 / 350 430 / 380

Low 330 / 310 360 / 330

Quiet - -

High 780 / 780 850 / 900

Low - -

INDOOR

OUTDOOR

INDOOR

OUTDOOR

High 42.0 / 40.0 45.0 / 43.0

Med 39.0 / 38.0 43.0 / 39.0

Low 36.0 / 36.0 38.0 / 35.0

AUU18RCLX

AOU18RLX

kW 5.20 / 6.30 6.50 / 8.00

BTU/h 17,800 / 21,500 22,200 / 27,300

kW 6.15 / 7.50 7.10 / 8.50

BTU/h 21,000 / 25,600 24,200 / 29,000

A 8.4 9.5

pints/h( l/h ) 5.3 (2.5) 6.4 (3.0)

51.0 / 53.0 53.0 / 55.0

CASSETTE TYPE

AUU18-24R

OUTPUT W

Coil Dimensions

Coil Dimensions

INDOOR

OUTDOOR

INDOOR

OUTDOOR

INDOOR

OUTDOOR

INDOOR

OUTDOOR

INDOOR

OUTDOOR

LIQUID

GAS

CHARGE lb. oz. (g)

COOLING

HEATING

in. (mm)

in. (mm)

ft. (m)

ft. (m)

Note:
Specifications are based on the following conditions.
Power source of specifications : 230V
Cooling:Indoor temperature of 80.6 °
Heating:Indoor temperature of 68.0 °F(20°C)DB / 59.0 °F(15°C)WB,and outdoor temperature of 44.6 °F(7°C)DB/42.8 °F(6°C)WB.

Pipe length : 24ft. 7in.(7.5m),Height difference : 0 ft.(0m) [Outdoor unit - Indoor unit]

mm

(Reference in.)

F

(27°C)DB / 66.2 °F(19°C)WB,and outdoor temperature of 95.0 °F(35°C)DB/75.2 °F(24°C)WB.

- (02 - 05) -

2-4. DIMENSIONS

2-4-1. OUTDOOR UNIT

MODELS : AOU18R, AOU24R

CASSETTE TYPE

AUU18-24R

Unit : in.(mm)

CASSETTE TYPE

AUU18-24R

Top view

35-7/16 (900)

32-11/16 (830)

13/16 (21)

(9)

11/32

Front view

3-1/32 (77)

1-7/32

(31)

13 (330)

15-3/4 (400)

15/32

(12)

Side view

25-19/32 (650)

Air flow

14-7/8 (370)

MOUNTING POSITION

When there are obstacles at the
back or front sides.

3-15/16 (100)
or more

23-5/8 (600)
or more

Bottom view

When there are obstacles at the
back, side(s), and top.

3-15/16 (100)
or more

(

9-27/

Ser

32 (

v

i

250)

c

e

s

pac

or

e)

mor

e

11-13/16 (300)
or more

3-29/32 (99)

(196)

7-23/32

5-25/32 (147)

6-11/16

(170)

When there are obstacles at the
back, side with the installation of
more than one unit.

23-5/8 (600)

or more

9-27/32 (250)
or more

11-13/16 (300)

9-27/32 (250)
or more

or more

- (02 - 06) -

2-4-2. INDOOR UNIT

MODELS : AUU18R, AUU24R

1-3/16

(30)

CASSETTE TYPE

AUU18-24R

Side view

Unit : in.(mm)

9-11/16

(246)

CASSETTE TYPE

AUU18-24R

37 (940)

29-17/32 (750)

32-11/16 (830)

37 (940)

Bottom view (Panel)

29-17/32 (750)

32-11/16 (830)

Bottom view

Drain inside Dia. 32mm

outside Dia. 37mm

11-3/4

(298.5)

(Drain pipe)

12 (305.5)

2-3/8 (60)

7-7/8

9-1/4

(235)

(200)

9-25/32
(248.5)

Side view (Standard setting) Side view (Slender setting)

3-15/16 (100)

2-3/4 (70)

(Small pipe)

(Large pipe)

- (02 - 07) -

MOUNTING POSITION

Floor

Unit : in.(mm)

Strong and durable ceiling

CASSETTE TYPE

AUU18-24R

39-3/8

96 (2,400)
or more

47-1/4 (1,200)
or more

(1,000)
or more

Obstruction

CASSETTE TYPE

AUU18-24R

You can select 2-way setting

(A) Standard setting (B) Slender setting

or more

9-27/32 (250)

3-15/16 (100)

or more

(4 directions) (3 directions)

Piping position

8-15/32 (215)

3-15/16 (100)

or more

(2 directions) (2 directions)

3-15/16 (100)

or more

3-15/16 (100) or more

or more

- (02 - 08) -

2-5. REFRIGERANT CIRCUIT

MODELS : AUU18R / AOU18R

OUTDOOR UNIT

Pressure
Check Valve

High Pressure

Strainer

Switch

Muffler

4-way
Valve

Compressor

Expansion
Valve

Accumulator

c

Strainer

CASSETTE TYPE

AUU18-24R

Condenser

Refrigerant Pipe

1/2 (12.70mm )

Charging
Valve

Refrigerant Pipe

1/4 (6.35mm )

Charging Valve

INDOOR UNIT

Evaporator

CASSETTE TYPE

AUU18-24R

: COOL

: HEAT

MODELS : AUU24R / AOU24R

OUTDOOR UNIT

Pressure
Check Valve

High Pressure
Switch

4-way

Muffler

Valve

Condenser

c

Compressor

Expansion
Valve

Strainer

Strainer

INDOOR UNIT

Refrigerant Pipe

5/8 (15.88mm )

Charging
Valve

Evaporator

Accumulator

Refrigerant Pipe

3/8 (9.52mm )

Charging Valve

: COOL

: HEAT

c

(COMPRESSOR TEMP.)

- (02 - 09) -

2-6. WIRING DIAGRAMS

2-6-1. OUTDOOR UNIT

MODELS : AOU18R, AOU24R

TEMP.

TEMP.

CASSETTE TYPE

AUU18-24R

TEMP.

TEMP.

TEMP.

CASSETTE TYPE

AUU18-24R

- (02 - 10) -

G

TO INDOOR UNIT

G

TO POWER SUPPLY