Fujitsu Halcyon AUU18RGLX Service manual

AIR CONDITIONER
Cassette type
DESIGN & TECHNICAL MANUAL
INDOOR
AUU18RGLX
AUU24RGLX
AUU30RGLX
AUU36RGLX
OUTDOOR
AOU18RGLX
AOU24RGLX
AOU30RGLX
AOU36RGLX
DR_AU016EF_05
2022.12.14

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
Copyright © 2018, 2022 Fujitsu General Limited. All rights reserved.

CONTENTS
Part 1. INDOOR UNIT...........................................................................1
1. Specifications................................................................................................2
2. Dimensions....................................................................................................6
2-1. Models: AUU18RGLX and AUU24RGLX.........................................................................6
2-2. Models: AUU30RGLX and AUU36RGLX.........................................................................7
2-3. Installation space requirement .........................................................................................8
3. Wiring diagram ............................................................................................11
3-1. Models: AUU18RGLX, AUU24RGLX, AUU30RGLX, and AUU36RGLX .......................11
4. Capacity table..............................................................................................12
4-1. Cooling capacity.............................................................................................................12
4-2. Heating capacity ............................................................................................................16
5. Fan performance .........................................................................................18
5-1. Air velocity distributions..................................................................................................18
5-2. Airflow ............................................................................................................................26
5-3. Fresh air characteristics.................................................................................................30
6. Operation noise (sound pressure).............................................................34
6-1. Noise level curve............................................................................................................34
6-2. Sound level check point .................................................................................................36
7. Safety devices .............................................................................................37
8. External input and output ..........................................................................38
8-1. External input.................................................................................................................39
8-2. External output...............................................................................................................40
8-3. Combination of external input and output.......................................................................41
8-4. Details of function ..........................................................................................................44
9. Function settings .......................................................................................58
9-1. Function settings on indoor unit .....................................................................................58
9-2. Contents of function setting............................................................................................60
10. Accessories.................................................................................................67
11. Optional parts .............................................................................................68
11-1.Controllers ....................................................................................................................68
11-2.Cassette grille ...............................................................................................................69
11-3.Others ...........................................................................................................................69

Part 2. OUTDOOR UNIT.....................................................................71
1. Specifications..............................................................................................72
2. Dimensions..................................................................................................73
2-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX.......................73
3. Installation space ........................................................................................74
3-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX.......................74
4. Refrigerant circuit .......................................................................................78
4-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX.......................78
5. Wiring diagrams ..........................................................................................79
5-1. Model: AOU18RGLX......................................................................................................79
5-2. Models: AOU24RGLX, AOU30RGLX, and AOU36RGLX ..............................................80
6. Capacity compensation rate for pipe length and height difference........81
6-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX.......................81
7. Additional charge calculation ....................................................................82
7-1. Model: AOU18RGLX......................................................................................................82
7-2. Models: AOU24RGLX, AOU30RGLX, and AOU36RGLX ..............................................82
8. Airflow..........................................................................................................83
8-1. Model: AOU18RGLX......................................................................................................83
8-2. Model: AOU24RGLX......................................................................................................83
8-3. Model: AOU30RGLX......................................................................................................84
8-4. Model: AOU36RGLX......................................................................................................84
9. Operation noise (sound pressure).............................................................85
9-1. Noise level curve............................................................................................................85
9-2. Sound level check point .................................................................................................87
10. Electrical characteristics............................................................................88
11. Safety devices .............................................................................................89
12. Accessories.................................................................................................90
12-1.Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX......................90
CONTENTS (continued)

Part 1. INDOOR UNIT
CASSETTE TYPE:
AUU18RGLX
AUU24RGLX
AUU30RGLX
AUU36RGLX

1. Specifications
Type
Cassette
Inverter, Heat pump
Model name AUU18RGLX AUU24RGLX
Power supply 208/230 V~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 187—253 V
Capacity
Cooling
Rated kW 5.28 7.03
Btu/h 18,000 24,000
Min.—Max. kW 1.58—6.30 1.58—8.50
Btu/h 5,400—21,500 5,400—29,000
Heating
47°FDB
(Outdoor temp.)
Rated kW 6.15 7.91
Btu/h 21,000 27,000
Min.—Max. kW 1.58—7.50 1.58—9.50
Btu/h 5,400—25,600 5,400—32,400
17°FDB
(Outdoor temp.) *1
Rated kW 3.60 4.81
Btu/h 12,300 16,400
Max. kW 5.83 7.47
Btu/h 19,800 25,400
5°FDB
(Outdoor temp.) *2Rated kW 5.3 6.8
Btu/h 18,100 23,200
Input power
Cooling Rated
kW
1.35 1.88
Min.—Max. 0.50—2.05 0.58—2.77
Heating
47°FDB
(Outdoor temp.)
Rated 1.47 2.15
Min.—Max. 0.48—2.27 0.50—2.88
17°FDB
(Outdoor temp.) *1Rated 1.15 1.72
5°FDB
(Outdoor temp.) *2Rated 2.29 3.33
Fan
HIGH
W
16 21
MED 12 16
LOW 11 13
QUIET 7 9
Current Cooling Rated A 6.1 8.4
Heating 6.6 9.6
EER2 Cooling kW/kW 3.93 3.75
Btu/hW 13.4 12.8
COP2 Heating kW/kW 4.18 3.70
Btu/hW 14.3 12.6
SEER2 Btu/hW 22.0 20.8
HSPF2 10.5 10.1
Power factor Cooling %97
Heating 97
Moisture removal pints/h (L/h) 4.6 (2.2) 6.1 (2.9)
Maximum operating current *3Cooling A13.6 15.6
Heating 14.1 16.1
Fan
Airflow rate
Cooling
HIGH
CFM (m3/h)
618 (1,050) 677 (1,150)
MED 565 (960) 618 (1,050)
LOW 530 (900) 577 (980)
QUIET 459 (780) 512 (870)
Heating
HIGH 618 (1,050) 677 (1,150)
MED 565 (960) 618 (1,050)
LOW 530 (900) 577 (980)
QUIET 459 (780) 512 (870)
Type × Qty Turbo fan × 1
Motor output W 81
Sound pressure level *4
Cooling
HIGH
dB (A)
33 35
MED 32 34
LOW 31 32
QUIET 28 29
Heating
HIGH 33 35
MED 32 34
LOW 31 32
QUIET 28 29
Heat exchanger type
Dimensions
(H × W × D) in (mm) Main 1: 8-1/4 × 83-3/4 × 1/2 (210 × 2,127 × 13.3)
Main 2: 8-1/4 × 81-1/8 × 1/2 (210 × 2,061 × 13.3)
Fin pitch FPI 21
Rows × Stages 2 × 10
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net in (mm) 9-11/16 × 33-1/16 × 33-1/16 (246 × 840 × 840)
Gross 11-3/4 × 37-13/16 × 37-3/8 (298 × 960 × 950)
Weight Net lb (kg) 53 (24)
Gross 62 (28)
Connection pipe Size Liquid in (mm) Ø1/4 (6.35) Ø3/8 (9.52)
Gas Ø1/2 (12.70) Ø5/8 (15.88)
Method Flare
Drain hose Material PVC
Tip diameter in (mm) Ø1 (25) (I.D.), Ø1-1/16 (26.6) (O.D.)
Operation range Cooling °F (°C) 64 to 90 (18 to 32)
%RH 80 or less
Heating °F (°C) 60 to 86 (16 to 30)
- 2 - 1. Specifications
CASSETTE TYPE AUU18-36RGLX CASSETTE TYPE AUU18-36RGLX

Type
Cassette
Inverter, Heat pump
Model name AUU18RGLX AUU24RGLX
Cassette grille
(Option)
Material PS
Color
UTG-GCGF: White
Approximate color of Munsell N 9.25/
UTG-LCGVCB: Black
Approximate color of Munsell N 2
Dimensions
(H × W × D)
Net in (mm) 2-1/16 × 37-3/8 × 37-3/8 (53 × 950 × 950)
Gross 4-5/16 × 39-3/8 × 39-3/4 (110 × 1,000 × 1,010)
Weight Net lb (kg) 13 (6)
Gross 22 (10)
Remote controller (Option) Wireless, Wired
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80°FDB (26.67°CDB)/67°FWB (19.44°CWB), and outdoor temperature of 95°FDB (35°CDB)/75°FWB (23.9°CWB).
– Heating: Indoor temperature of 70°FDB (21.11°CDB)/59°FWB (15°CWB), and outdoor temperature of 47°FDB (8.33°CDB)/43°FWB (6.11°CWB).
– *1: Heating (17°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 17°FDB (-8.33°CDB)/15°FWB (-9.44°CWB).
– *2: Heating (5°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 5°FDB (-15.0°CDB)/4°FWB (-15.56°CWB).
– Test conditions are based on AHRI 210/240 2023.
– Pipe length: 24 ft 6 in (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *3: Maximum operating current is the total current of the indoor unit and the outdoor unit.
• *4: Sound pressure level
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
M condition
Model name AUU18RGLX AUU24RGLX
Capacity
Cooling
Rated kW 5.28 7.03
Btu/h 18,000 24,000
Min.—Max. kW 1.58—6.30 1.58—8.50
Btu/h 5,400—21,500 5,400—29,000
Heating
47°FDB
(Outdoor temp.)
Rated kW 6.15 7.91
Btu/h 21,000 27,000
Min.—Max. kW 1.58—7.50 1.58—9.50
Btu/h 5,400—25,600 5,400—32,400
17°FDB
(Outdoor temp.) *
Rated kW 3.60 4.81
Btu/h 12,300 16,400
Max. kW 5.83 7.47
Btu/h 19,800 25,400
Input power
Cooling Rated
kW
1.35 1.88
Min.—Max. 0.50—2.05 0.58—2.77
Heating
47°FDB
(Outdoor temp.)
Rated 1.47 2.15
Min.—Max. 0.48—2.27 0.50—2.88
17°FDB
(Outdoor temp.) * Rated 1.15 1.72
Fan
HIGH
W
16 21
MED 12 16
LOW 11 13
QUIET 7 9
Current Cooling Rated A 6.1 8.4
Heating 6.6 9.6
EER Cooling kW/kW 3.93 3.75
Btu/hW 13.4 12.8
COP Heating kW/kW 4.19 3.69
Btu/hW 14.3 12.6
SEER Btu/hW 21.4 20.0
HSPF 10.9 10.8
Power factor Cooling %97
Heating 97
NOTES:
Specifications are based on the following conditions:
• Cooling: Indoor temperature of 80°FDB (26.67°CDB)/67°FWB (19.44°CWB), and outdoor temperature of 95°FDB (35°CDB)/75°FWB (23.9°CWB).
• Heating: Indoor temperature of 70°FDB (21.11°CDB)/59°FWB (15°CWB), and outdoor temperature of 47°FDB (8.33°CDB)/43°FWB (6.11°CWB).
• *: Heating (17°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 17°FDB (-8.33°CDB)/15°FWB (-9.44°CWB).
• Test conditions are based on AHRI 210/240 2017.
• Pipe length: 24 ft 6 in (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
- 3 - 1. Specifications
CASSETTE TYPE AUU18-36RGLX CASSETTE TYPE AUU18-36RGLX

Type
Cassette
Inverter, Heat pump
Model name AUU30RGLX AUU36RGLX
Power supply 208/230 V~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 187—253 V
Capacity
Cooling
Rated kW 8.79 10.55
Btu/h 30,000 36,000
Min.—Max. kW 2.81—10.26 2.81—11.43
Btu/h 9,600—35,000 9,600—39,000
Heating
47 °FDB
(Outdoor temp.)
Rated kW 9.38 10.55
Btu/h 32,000 36,000
Min.—Max. kW 2.70—11.43 2.70—14.07
Btu/h 9,200—39,000 9,200—48,000
17°FDB
(Outdoor temp.) *1
Rated kW 5.92 6.80
Btu/h 20,200 23,200
Max. kW 8.88 11.08
Btu/h 30,300 37,700
5°FDB
(Outdoor temp.) *2Rated kW 7.62 7.80
Btu/h 26,000 26,600
Input power
Cooling Rated
kW
2.57 3.60
Min.—Max. 0.60—3.33 0.60—3.94
Heating
47°FDB
(Outdoor temp.)
Rated 2.38 2.73
Min.—Max. 0.52—3.27 0.52—4.19
17°FDB
(Outdoor temp.) *1Rated 1.96 2.25
5°FDB
(Outdoor temp.) *2Rated 3.31 3.36
Fan
HIGH
W
52 87
MED 39 52
LOW 31 39
QUIET 20 23
Current Cooling Rated A 11.5 16.1
Heating 10.7 12.2
EER2 Cooling kW/kW 3.42 2.92
Btu/hW 11.7 10.0
COP2 Heating kW/kW 3.96 3.86
Btu/hW 13.5 13.2
SEER2 Btu/hW 18.7 18.0
HSPF2 10.4 9.7
Power factor Cooling %97
Heating 97
Moisture removal pints/h (L/h) 6.3 (3.0) 7.8 (3.7)
Maximum operating current *3Cooling A15.6 17.6
Heating 16.1 19.1
Fan
Airflow rate
Cooling
HIGH
CFM (m3/h)
942 (1,600) 1,118 (1,900)
MED 824 (1,400) 936 (1,590)
LOW 748 (1,270) 836 (1,420)
QUIET 677 (1,150) 695 (1,180)
Heating
HIGH 942 (1,600) 1,118 (1,900)
MED 824 (1,400) 936 (1,590)
LOW 748 (1,270) 836 (1,420)
QUIET 677 (1,150) 695 (1,180)
Type × Qty Turbo fan × 1
Motor output W 81
Sound pressure level *4
Cooling
HIGH
dB (A)
40 44
MED 38 41
LOW 36 38
QUIET 33 34
Heating
HIGH 40 44
MED 38 41
LOW 36 38
QUIET 33 34
Heat exchanger type
Dimensions
(H × W × D) in (mm) Main 1: 9-15/16 × 83-3/4 × 1/2 (252 × 2,127 × 13.3)
Main 2: 9-15/16 × 81-1/8 × 1/2 (252 × 2,061 × 13.3)
Fin pitch FPI 21
Rows × Stages 2 × 12
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net in (mm) 11-5/16 × 33-1/16 × 33-1/16 (288 × 840 × 840)
Gross 13-3/8 × 37-13/16 × 37-3/8 (340 × 960 × 950)
Weight Net lb (kg) 57 (26)
Gross 66 (30)
Connection pipe Size Liquid in (mm) Ø3/8 (9.52)
Gas Ø5/8 (15.88)
Method Flare
Drain hose Material PVC
Tip diameter in (mm) Ø1 (25) (I.D.), Ø1-1/16 (26.6) (O.D.)
Operation range Cooling °F (°C) 64 to 90 (18 to 32)
%RH 80 or less
Heating °F (°C) 60 to 86 (16 to 30)
Cassette grille
(Option)
Material PS
Color
UTG-GCGF: White
Approximate color of Munsell N 9.25/
UTG-LCGVCB: Black
Approximate color of Munsell N 2
Dimensions
(H × W × D)
Net in (mm) 2-1/16 × 37-3/8 × 37-3/8 (53 × 950 × 950)
Gross 4-5/16 × 39-3/8 × 39-3/4 (110 × 1,000 × 1,010)
Weight Net lb (kg) 13 (6)
Gross 22 (10)
Remote controller (Option) Wireless, Wired
- 4 - 1. Specifications
CASSETTE TYPE AUU18-36RGLX CASSETTE TYPE AUU18-36RGLX

Type
Cassette
Inverter, Heat pump
Model name AUU30RGLX AUU36RGLX
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80°FDB (26.67°CDB)/67°FWB (19.44°CWB), and outdoor temperature of 95°FDB (35°CDB)/75°FWB (23.9°CWB).
– Heating: Indoor temperature of 70°FDB (21.11°CDB)/59°FWB (15°CWB), and outdoor temperature of 47°FDB (8.33°CDB)/43°FWB (6.11°CWB).
– *1: Heating (17°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 17°FDB (-8.33°CDB)/15°FWB (-9.44°CWB).
– *2: Heating (5°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 5°FDB (-15.0°CDB)/4°FWB (-15.56°CWB).
– Test conditions are based on AHRI 210/240 2023.
– Pipe length: 24 ft 6 in (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *3: Maximum operating current is the total current of the indoor unit and the outdoor unit.
• *4: Sound pressure level
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
M condition
Model name AUU30RGLX AUU36RGLX
Capacity
Cooling
Rated kW 8.79 10.55
Btu/h 30,000 36,000
Min.—Max. kW 2.81—10.26 2.81—11.43
Btu/h 9,600—35,000 9,600—39,000
Heating
47 °FDB
(Outdoor temp.)
Rated kW 9.38 10.55
Btu/h 32,000 36,000
Min.—Max. kW 2.70—11.43 2.70—14.07
Btu/h 9,200—39,000 9,200—48,000
17°FDB
(Outdoor temp.) *
Rated kW 5.92 6.80
Btu/h 20,200 23,200
Max. kW 8.88 11.08
Btu/h 30,300 37,700
Input power
Cooling Rated
kW
2.57 3.60
Min.—Max. 0.60—3.33 0.60—3.94
Heating
47°FDB
(Outdoor temp.)
Rated 2.38 2.73
Min.—Max. 0.52—3.27 0.52—4.19
17°FDB
(Outdoor temp.) * Rated 1.96 2.25
Fan
HIGH
W
52 87
MED 39 52
LOW 31 39
QUIET 20 23
Current Cooling Rated A 11.5 16.1
Heating 10.7 12.2
EER Cooling kW/kW 3.42 2.92
Btu/hW 11.7 10.0
COP Heating kW/kW 3.96 3.85
Btu/hW 13.5 13.2
SEER Btu/hW 18.6 17.5
HSPF 11.5 11.2
Power factor Cooling %97
Heating 97
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80°FDB (26.67°CDB)/67°FWB (19.44°CWB), and outdoor temperature of 95°FDB (35°CDB)/75°FWB (23.9°CWB).
– Heating: Indoor temperature of 70°FDB (21.11°CDB)/59°FWB (15°CWB), and outdoor temperature of 47°FDB (8.33°CDB)/43°FWB (6.11°CWB).
– *: Heating (17°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 17°FDB (-8.33°CDB)/15°FWB (-9.44°CWB).
– Test conditions are based on AHRI 210/240 2017.
– Pipe length: 24 ft 6 in (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
- 5 - 1. Specifications
CASSETTE TYPE AUU18-36RGLX CASSETTE TYPE AUU18-36RGLX

2. Dimensions
2-1. Models: AUU18RGLX and AUU24RGLX
37-3/8 (950)
View A 13-7/16 (342)
31-5/16 (796)
11-9/16
(293)
7-7/8 to 8-1/16
(200 to 205)
3/8 (10)
1-9/16 (39)
37-3/8 (950)
37-3/8 (950)
24-7/16 (620)
30-1/4 (768)
16-9/16 (420)
Hanging bolt position
Hanging bolt position
Indoor unit
Drain hose
BC
Ceiling
7-7/8 to 8-1/16
(200 to 205)
7-7/8
(200)
13-7/16 (342) 1-3/4
(45) 1-9/16 (40)
5-8/16
(140)
10-1/16
(256)
Wire hole
View B View C
A
Fresh air inlet (cut out)
9-5/16
(237)
1-9/16
(40)
6-7/16
(164)
3-15/16 (100)
3-1/4 (83)
13-7/8 (352)
6-7/16
(164)
3-9/16
(90)
4 ×
Ø1/8 (3.2)
hole
Ø3-3/4
(95)
3-1/8
(80)
1-9/16
(40)
3-1/8
(80)
3-15/16 (100)
3-1/4 (83)
Unit: in (mm)
3-9/6
(90)
- 6 -
2-1. Models: AUU18RGLX and AUU24RGLX 2. Dimensions
CASSETTE TYPE AUU18-36RGLX CASSETTE TYPE AUU18-36RGLX