Fujitsu AUU18RC User manual

SPLIT TYPE

AIR CONDITIONER

CASSETTE

type

CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

OUTLINE AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 3

CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

INDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . . . 5

OUTDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . 6

INDOOR P.C. BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . 7

OUTDOOR P.C. BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . 8

DISASSEMBLY ILLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Models Indoor unit Outdoor unit

AUU18RC AOU18RC

AUU24RC AOU24RC

– 2 –– 1 –

SPECIFICATIONS

TYPE COOL & HEAT

INDOOR UNIT AUU18RC AUU24RC

OUTDOOR UNIT AOU18RC AOU24RC

COOLING CAPACITY (BTU/hr) 18,000 - 17,000 23,500 - 22,500

HEATING CAPACITY 18,500 - 18,000 24,000 - 23,000

POWER SOURCE (V) 230 / 208

FREQUENCY (Hz) 60

RUNNING CURRENT (A) COOLING 8.5 - 9.0 10.7 - 11.4

HEATING 7.7 - 8.1 9.5 - 10.2

INPUT WATTS (kW) COOLING 1.90 - 1.83 2.35 - 2.30

HEATING 1.72 - 1.66 2.10 - 2.05

EER (BTU/h•W) COOLING 9.5 - 9.3 10.5 - 11.2

HEATING 10.8 - 10.8 9.5 - 10.2

MOISTURE REMOVAL (/hr) 1.8 2.7

AIR CIRCULATION-Hi (m3/hr) 920 1,100

ELECTRICAL DATA

COMPRESSOR

FAN MOTOR

DIMENSIONS

TYPE Hermetic type, Permanent split condenser, 2 pole, Single phase, Induction motor

CODE H25B18QABCA H25B24QABCA

REFRIGERANT R-22 lbs (g) 4.85 (2,200) 5.07 (2,300)

POWER SOURCE (V) 230 / 208

TYPE MFA-25GPM

INDOOR UNIT HI-SPEED ( r.p.m. ) 420 490

MED-SPEED ( r.p.m. ) 370 430

LO-SPEED ( r.p.m. ) 330 360

OUTDOOR UNIT TYPE MFB-24GPT

( r.p.m. ) ,735

INDOOR UNIT

H x W x D inch (mm)

9-11/16" (246) x 32-11/16" (830) x 32-11/16" (830)

OUTDOOR UNIT 25-1/8" (643) x 33-1/32" (840) x 13-1/4" (336)

WEIGHT

INDOOR UNIT

GROSS / NET lbs (kg)

97 / 75 (44 / 34) 97 / 75 (44 / 34)

OUTDOOR UNIT 165 / 147 (75 / 67) 167 / 150 (76 / 68)

Note : In the case that 7.5 m are exceeded, when using a connection pipe other than that in the table,

charge additional refrigerant with 40 g (1.41 oz) / 3.3 ft (1 m) as the criteria.

REFRIGERANT CHARGE

PIPE LENGTH 25 ft ( 7.5 m ) 33 ft ( 10 m ) 49 ft ( 15 m ) 66 ft ( 20 m ) 83 ft ( 25 m )

FULL CHARGE AUU18RC 2,200 g ( 77.6 oz ) 2,300 g ( 81.1 oz ) 2,500 g ( 88.2 oz ) 2,700 g ( 95.2 oz ) 2,900 g ( 102.3 oz )

AMOUNT AUU24RC 2,300 g ( 81.1 oz ) 2,400 g ( 84.7 oz ) 2,600 g ( 91.7 oz ) 2,800 g ( 98.8 oz ) 3,000 g ( 105.8 oz )

305.5 298.5

248.5

200 60

(Drain pipe)

100

(Small pipe)

(Large pipe)

33-1/32"(840) 13-1/4"(336)

31-21/32"(804)

25-1/8"(643)

13-7/64"(333)

9-11/16"

(246)

9-1/4"

(235)

9-25/32"

(248.5)

11-3/4"

(298.5)

(305.5)

1"(25)

1-3/16"

(30)

37 (940)

2-3/8"(60)

(Drain pipe)

Drain inside Dia. ø1-17/64"(ø32)

outside Dia. ø1-29/64"(ø37)

3-15/16"(100)

(Small pipe)

2-3/4"(70)

(Large pipe)

32-11/16"(830)

– 2 –

Models : AUU18RC

AUU24RC

Models : AOU18RC

AOU24RC

OUTLINE AND DIMENSIONS

INDOOR UNIT

Unit : inch (mm)

OUTDOOR UNIT

– 3 –

REFRIGERANT SYSTEM DIAGRAM

Models : AUU18RC / AOU18RC

Models : AUU24RC / AOU24RC

Indoor Unit

Refrigerant pipe

ø 3/8”(9.53mm)

Refrigerant pipe

ø 5/8 (15.88mm)

Capillary

tube

Outdoor Unit

Condenser

Muffler

Compressor

Strainer

Dryer

4-Way

valve

Cooling

: Flare coupling

Charging valve

Evaporator

Distributor

Indoor Unit

Refrigerant pipe

ø 3/8 (9.53mm)

Refrigerant pipe

ø 5/8 (15.88mm)

Capillary

tube

Outdoor Unit

Condenser

Muffler

Compressor

Strainer

Dryer

4-Way

valve

Cooling

Heating

: Flare coupling

Charging valve

Evaporator

Distributor

– 4 –

CIRCUIT DIAGRAM

Models : AUU18RC / AOU18RC

AUU24RC / AOU24RC

CN 10 CN 4

STEP

MOTOR

FLOAT

SWITCH

DRAIN PUMP

MOTOR

FAN MOTOR

CAPACITOR

CONTROL BOARD

THERMISTOR

(PIPE TEMP.)

123

THERMISTOR

(ROOM TEMP.)

TO REMOTE

CONTROL UNIT

TERMINAL

FILTER BOARD

Use T 3.15A–250V

Fuse on F101

BROWN

RED

WHITE

CN 15

BLACK

CN 7

GRAY

CN 17

WHITE

BLACK

RED

GREEN

BLACK

WHITE

RED

ORANGE

YELLOW

WHITE

BROWN

RED

ORANGE

YELLOW

WHITE

CN 8

BLACK

CN 1

WHITE

BLACK

(N)

TO OUTDOOR UNIT

TERMINAL

CN 6

BLACK

YELLOW

FAN

MOTOR

CN 5

BLACK

WHITE

RED

1 2

3 3

1 1

2 2

1 1

2 2 M

1 1

2 2

1 1

3 3 3 3

TRANSFORMER

SOLENOID

COIL

FAN MOTOR

CAPACITOR

COMPRESSOR

CAPACITOR

COMPRESSOR

POWER

RELAY

TERMINAL

THERMISTOR

TEST

(PIPE TEMP.)

THERMISTOR

(OUTDOOR TEMP.) (DISCHARGE TEMP.)

THERMISTOR

GREEN

PURPLE

WHITE

BLACK

GRAY

BROWN

RED

WHITE

BLACK

BLUE

RED

WHITE WHITE

WHITE

CN15 CN9 CN1 CN4 CN3 CN2 CN5

CN11CN10 ECN12 CN13

PRINTED CIRCUIT BOARD

1 2 1 2 1 2

1 2 4 3 2 1

1 21 21 2

1 21 2 3

1 2 3

FAN

MOTOR

GN 3

(N)

TO INDOOR UNIT

TO POWER SUPPLY

COM

OVERLOAD

PROTECTOR

INDOOR UNIT

OUTDOOR UNIT

– 5 –

INDOOR PRINTED CIRCUIT BOARD

CIRCUIT DIAGRAM

PIPE TEMPERATURE

THERMISTOR

ROOM TEMPERATURE

THERMISTOR

Models : AUU18RC

AUU24RC

AUTO RESTART SWITCHING

CUSTOM CODE SWITCHING

ZONE CONTROL SWITCHING

ROOM TEMPERATURE CORRECTION

(HEATING OPERATION)

ROOM TEMPERATURE CORRECTION

(HEATING OPERATION)

FILTER PCB

FLOAT SWITCH

FAN

SWITCHING

CONTROLLER PCB ASSEMBLY

AUU18RC : EZ–0016HSE–C

AUU24RC : EZ–0015HSE–C

– 6 –

OUTDOOR PRINTED CIRCUIT BOARD

CIRCUIT DIAGRAM

Models : AOU18RC

AOU24RC

POWER

SOURCE

208V/230V

60 Hz

COMPRESSOR CAPACITOR

PIPE TEMPERATURE THERMISTOR

OUTDOOR TEMPERATURE THERMISTOR

DISCHARGE THERMISTOR

CONTROLLER PCB ASSEMBLY

EZ–0010HUE–C

MODEL No. CAPACITANCE

AOU18RC 30µF 400VAC

AOU24RC 35µF 400VAC

– 7 –

INDOOR P.C. BOARD LAYOUTS

CONTROLLER PCB ASSEMBLY (MAIN PCB)

(Viewed from the solder side)

FILTER PCB ASSEMBLY

(Viewed from the solder side)

– 8 –

OUTDOOR P.C. BOARD LAYOUTS

CONTROLLER PCB ASSEMBLY (MAIN PCB)

(Viewed from the component side)

(Viewed from the solder side)

692

544

710

469 468

245

858

487

858

240

545

544 705

847

542

705

847

692

690

692

847

543 543

544

122

543

122

847

692

690

692

847

543

847

122 690

847

692

226

338

522

122 122

834-2

876-2

472-4 472-2

472-3

777-2

777-1

472-1

472-5

– 9 –

DISASSEMBLY ILLUSTRATION

Models : AUU18RC

AUU24RC

This manual suits for next models

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