Fujitsu ADUH09LUAS1 User manual

AIR CONDITIONER
Duct type
SERVICE MANUAL
INDOOR
ADUH09LUAS1
ADUH12LUAS1
ADUH18LUAS1
OUTDOOR
AOUH09LUAS1 AOUH12LUAS1
AOUH18LUAS1
SR_AR030EF_02
2021.04.26

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
Trademarks
FGLair™ is trademark of Fujitsu General Limited in the United States, other countries or both.
Google Play™ is trademark of Google Inc.
App Store® is a service mark of Apple Inc., registered in the U.S. and other countries.
Copyright © 2021 Fujitsu General Limited. All rights reserved.

CONTENTS
1. GENERAL INFORMATION
2. TECHNICAL DATA AND PARTS LIST
3. TROUBLESHOOTING
4. CONTROL AND FUNCTIONS
5. FILED WORKING

1. GENERAL INFORMATION
2021.04.02
SR_CH01_AR030EF_01

CONTENTS
1. GENERAL INFORMATION
1. Specifications..............................................................................................01-1
1-1. Indoor unit ......................................................................................................................01-1
1-2. Outdoor unit....................................................................................................................01-3
2. Dimensions..................................................................................................01-4
2-1. Indoor unit ......................................................................................................................01-4
2-2. Outdoor unit....................................................................................................................01-8

1. Specifications
1-1. Indoor unit
Type Duct
Inverter heat pump
Model name ADUH09LUAS1 ADUH12LUAS1 ADUH18LUAS1
Power supply 208/230 V ~ 60 Hz
Available voltage range 187—253 V
Capacity
Cooling
Rated k→ 2.64 3.52 5.02
Btu/h 9,000 12,000 17,100
Min.—Max. k→ 0.90—3.20 0.90—4.00 0.90—5.90
Btu/h 3,100—11,000 3,100—13,600 3,100—20,100
Heating
47 °FDB
(Outdoor temp.)
Rated k→ 3.52 4.69 6.33
Btu/h 12,000 16,000 21,600
Min.—Max. k→ 0.90—4.70 0.90—5.70 0.90—7.50
Btu/h 3,100—16,000 3,100—19,400 3,100—25,600
17 °FDB
(Outdoor temp.)
Rated k→ 2.17 3.08 4.22
Btu/h 7,400 10,500 14,400
Max. k→ 3.08 4.98 5.75
Btu/h 10,500 17,000 19,600
Input power
Cooling Rated
k→
0.66 0.94 1.37
Max. 1.05 2.06 2.05
Heating
47 °FDB
(Outdoor temp.)
Rated 0.89 1.30 1.71
Max. 1.89 1.79 2.57
17 °FDB
(Outdoor temp.)
Rated 0.78 1.07 1.49
Max. 1.42 2.01 2.56
Current Cooling Rated A 3.3 4.2 6.1
Heating 4.5 5.8 7.6
EER Cooling k→/k→ 4.00 3.74 3.66
Btu/h→ 13.6 12.8 12.5
COP Heating k→/k→ 3.96 3.60 3.70
Btu/h→ 13.5 12.3 12.6
SEER Cooling Btu/h→ 20.0 20.2 20.2
HSPF Heating Btu/h→ 11.7 11.5 11.4
Power factor Cooling %87.0 97.3 97.6
Heating 86.0 97.5 97.8
Moisture removal pints/h (L/h) 1.5 (0.7) 2.7 (1.3) 4.2 (2.0)
Maximum operating current *1 Cooling A6.8 9.8 11.8
Heating 9.3 11.3 14.8
Fan
Airflow rate
Cooling
HIGH
CFM (m3/h)
353 (600) 383 (650) 553 (940)
MED 324 (550) 353 (600) 518 (880)
LO→ 294 (500) 324 (550) 482 (820)
QUIET 265 (450) 283 (480) 441 (750)
Heating
HIGH 353 (600) 383 (650) 553 (940)
MED 324 (550) 353 (600) 518 (880)
LO→ 294 (500) 324 (550) 482 (820)
QUIET 265 (450) 283 (480) 441 (750)
Type × Q'ty Sirocco × 2 Sirocco × 3
Motor output → 81
Recommended static pressure in→G (Pa) 0 to 0.36 (0 to 90)
Sound pressure level *2
Cooling
HIGH
dB (A)
28 29 32
MED 27 28 30
LO→ 26 27 29
QUIET 25 26 27
Heating
HIGH 28 29 32
MED 26 28 30
LO→ 25 27 29
QUIET 24 24 27
Heat exchanger type
Dimensions (H × → × D) in (mm) 294 × 500 × 39.9 294 × 700 × 39.9
Fin pitch FPI 1.3
Rows × Stages 3 × 14
Pipe type Copper tube
Fin type Aluminum
Enclosure Material Steel sheet
Color —
Dimensions
(H × → × D)
Net
in (mm)
7-13/16 × 27-9/16 × 24-7/16
(198 × 700 × 620)
7-13/16 × 35-7/16 × 24-7/16
(198 × 900 × 620)
Gross 10-7/8 × 38-1/8 × 30-3/8
(276 × 968 × 772)
10-7/8 × 46 × 30-3/8
(276 × 1,168 × 772)
→eight Net lb (kg) 37 (17) 44 (20)
Gross 49 (22) 57 (26)
Connection pipe Size Liquid in (mm) Ø1/4 (Ø6.35) Gas Ø3/8 (Ø9.52) Ø1/2 (Ø12.70)
Method Flare
Operation range Cooling °F (°C) 64 to 90 (18 to 32) %RH 80 or less
Heating °F (°C) 60 to 86 (16 to 30)
Drain hose
Material HARD PVC
Size in (mm) Ø3/4 (Ø20.7) [I.D.]
Ø1-1/16 (Ø26.6) [O.D.]
1-1. Indoor unit - (01-1) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Type Duct
Inverter heat pump
Model name ADUH09LUAS1 ADUH12LUAS1 ADUH18LUAS1
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB/67 °F→B(26.67 °CDB/19.44 °C→B), and outdoor temperature of 95 °FDB/75 °F→B (35 °CDB/23.9 °C→B).
– Heating: Indoor temperature of 70 °FDB/59 °F→B (21.11 °CDB/15 °C→B), and outdoor temperature of 47 °FDB /43 °F→B (8.33 °CDB/6.11°C→B).
– Standard static pressure: 0.10 in→G (25 Pa)
– Pipe length: 24 ft 7 in (7.5 m), Height difference: 0 m. (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum current:
– The maximum value when operated within the operation range.
– The total current of indoor unit and outdoor unit.
• *2: 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.
• *3: Available on Google Play™ store or on App Store®. Optional →LAN adapter is also required. For details, refer to the setting manual.
1-1. Indoor unit - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name AOUH09LUAS1 AOUH12LUAS1 AOUH18LUAS1
Power supply 208/230 V ~ 60 Hz
Power supply intake Outdoor unit
Available voltage range 187—253 V
Starting current A 4.6 6.4 8.1
Fan
Airflow rate Cooling CFM (m3/h) 906 (1,540) 1,171 (1,990) 1,395 (2,370)
Heating 1,089 (1,850) 1,460 (2,480)
Type × Q'ty Propeller fan × 1
Motor output → 23 49
Sound pressure level *1 Cooling dB (A) 44 48 52
Heating 48 49 55
Heat exchanger type
Dimensions
(H × → × D) in (mm)
Main1: 19-13/16 × 34-11/16 ×
11/16
(504 × 881 × 18.19)
Main2: 19-13/16 × 33-1/2 ×
11/16
(504 × 851 × 18.19)
Main1: 23-1/8 × 34-11/16 × 11/16
(588 × 881 × 18.19)
Main2: 23-1/8 × 33-1/2 × 11/16
(588 × 851 × 18.19)
Fin pitch FPI 20
Rows × Stages Main1: 1 × 24
Main2: 1 × 24
Main1: 1 × 28
Main2: 1 × 28
Pipe type Copper
Fin type Type (Material) Aluminum
Surface treatment PC fin
Compressor Type DC rotary × 1 DC twin rotary × 1
Motor output → 900 1,030
Refrigerant
Type R410A
Charge lb oz 2lbs.3oz. 2lbs.10oz. 2lbs.12oz.
g 1,000 1,200 1,250
Refrigerant oil Type RB68
Amount in3 (cm3)20.7 (340) 24.4 (400)
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × → × D)
Net
in (mm)
21-5/16 × 31-7/16 × 11-7/16
(542 × 799 × 290)
24-7/8 × 31-7/16 × 11-7/16
(632 × 799 × 290)
Gross 23-11/16 × 37 × 14-3/4
(602 × 940 × 375)
27-1/4 × 37 × 14-3/4
(692 × 940 × 375)
→eight Net lb (kg) 70 (32) 84 (38) 86 (39)
Gross 77 (35) 95 (43)
Connection pipe
Size Liquid in (mm) Ø 1/4 (Ø 6.35)
Gas Ø 3/8 (Ø 9.52) Ø 1/2 (Ø 12.7)
Method Flare
Pre-charge length
ft (m)
49 (15) 66 (20)
Max. length 66 (20) 98 (30)
Max. height difference 49 (15)
Operation range Cooling °F (°C) 14 to 115 (-10 to 46)
Heating -5 to 75 (-21 to 24)
Drain hose Material PP
Tip diameter in (mm) Ø 1/2 (Ø 13.0) (I. D.), Ø 5/8 to 11/16 (Ø 16.0 to 16.8) (O. D.)
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80 °FDB (26.67 °CDB) / 67 °F→B (19.44 °C→B), and outdoor temperature of 95 °FDB (35 °CDB) / 75 °F→B (23.9 °C→B).
– Heating: Indoor temperature of 70 °FDB (21.11 °CDB) / 59 °F→B (15 °C→B), and outdoor temperature of 47 °FDB (8.33 °CDB) / 43 °F→B (6.11 °C→B).
– 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.
• *1: 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.
1-2. Outdoor unit - (01-3) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: ADUH09LUAS1 and ADUH12LUAS1
Unit: in (mm)
Rear view
View A
Top view Side view
Front view
Bottom view
Drain port
2 (51)
22-5/8 (574)
6-17/8 (174)
2-13/16 (71)
6 (152)
3-15/16 (100) x 6 = 23-5/8 (600)
3-7/32 (82)
1-7/8 (48)
25-9/16 (650)
28-7/8 (734)
1-3/16 (30)
14-13/16 (377)
6-7/16
(163)
4-11/16 (119)
3-1/2 (89)
3-1/16 (78)
2-3/16 (55)
1-7/8 (47)
3/8 (10)
24-7/16 (620)
14-5/8 (371)
10-3/8 (264)
5-11/16
(144)
2-11/16
(69)
25-9/16 (650)
26-1/8 (664)
27-9/16 (700)
1-11/16 (43)
1-1/4 (31)
7-13/16 (198)
6-5/8 (168)
5-15/16
(151)
3-1/16 (78) 2-3/16 (55)
2-1. Indoor unit - (01-4) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Model: ADUH18LUAS1
Unit: in (mm)
Rear view
View A
Top view
Side view
Front view
Bottom view
Drain port
2 (51)
30-1/2 (774)
6-7/8 (174)
2-13/16 (71)
6 (152)
3-7/16
(87)
2-3/16
(56)
33-7/16 (850)
36-3/4 (934)
3-15/16 (100) × 8 = 31-1/2 (800)
1-3/16 (30)
14-13/16 (377)
6-7/16
(163)
4-11/16 (119)
3-1/2 (89)
3-1/16 (78)
2-3/16 (55)
1-7/8 (47)
3/8 (10)
24-7/16 (620)
14-5/8 (371)
10-3/8 (264)
5-11/16
(144)
2-11/16
(69)
33-7/16 (850)
34 (864)
35-7/16 (900)
1-11/16 (43)
1-1/4
(31)
7-13/16
(198)
6-5/8
(168)
5-15/16
(151)
3-1/16
(78) 2-3/16 (55)
A
2-1. Indoor unit - (01-5) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Installation space requirement
Provide sufficient installation space for product safety.
In ceiling-concealed installations:
Left
side
Strong and durable ceiling
Right
side
6 (150)
or more
16 (400)
or more Service access Ceiling
99 (2,500) or more
(When no ceiling)
Floor
10 (240) or more
1 (20) or more
1 (20) or more
12 (300) or more
Unit: in (mm)
Indoor unit
In wall-concealed installations:
1 (10)
or less
1 (10)
or less
Left side
Strong and
durable floor
Right side
(PIPE side)
Grille
Inlet air
Strong and
durable floor
6
(150)
or more
4 (100)
or more
12 (300)
or more
1 (20)
or more
1 (20)
or more
6 (150)
or more
Unit: in (mm)
Left side
Strong and
durable floor
Right side
(PIPE side)
Duct
Grille
Inlet air
Strong and
durable floor
6
(150)
or more
4 (100)
or more
12 (300)
or more
1 (20)
or more
1 (20)
or more
6 (150)
or more
2-1. Indoor unit - (01-6) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Maintenance space requirement
For future maintenance and service access, provide sufficient maintenance space.
NOTE: Do not place any wiring or illumination in the maintenance space, as they will impede ser-
vice.
Service access
Unit
Control
box
or more
Service space
12 (300)
12 (300) or more
4 (100)
or more
Unit: in (mm)
2-1. Indoor unit - (01-7) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢Models: AOUH09LUAS1
Top view
22-13/16 (580) 4-5/16 (109)
13 (330)
13-7/8 (353)
Pitch of bolts for installation
Pitch of bolts for installation
4- M1 0 hole
31-7/16 (799) 2-11/16 (68)
1-5/16 (33) 1-3/16 (30)
3/4 (19)
21-5/16 (542)
13/16 (20)
Side viewSide view Front view
11-7/16 (290)1/2 (13)
Unit: in (mm)
Bottom view
Airflow
Drain port Ø1-5/8 (42)
Side view (Valve part)
4-3/4 (120)
4-1/4 (184)
7-1/16 (180)
1-7/16 (37)
15-11/16 (399)
Hole
Hole
Hole
2-2. Outdoor unit - (01-8) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Models: AOUH12LUAS1 and AOUH18LUAS1
Side viewSide view Front view
Top view
22-13/16 (580)
31-7/16 (799)3/4 (19) 2-11/16 (68) 1/2 (13) 11-7/16 (290)
1-5/16 (33) 1-3/16 (30)
4-5/16 (109)
13-7/8 (353)
24-7/8 (632)
13/16 (20)
13 (330)
Pitch of bolts for installation
Pitch of bolts for installation
4-
M1 0 hole
Unit: in (mm)
Side view (Valve part)
4-3/4 (120)
4-1/4 (184)
7-1/16 (180)
Bottom view
Airflow
Drain port Ø1-5/8 (42)
1-7/16 (37)
15-11/16 (399)
Hole
Hole
Hole
2-2. Outdoor unit - (01-9) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit - (01-10) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2021.04.02
SR_CH02_AR030EF_01

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Indoor unit parts list....................................................................................02-2
2-1. Models: ADUH09LUAS1 and ADUH12LUAS1 ...............................................................02-2
2-2. Model: ADUH18LUAS1 ..................................................................................................02-6
3. Outdoor unit parts list...............................................................................02-10
3-1. Model: AOUH09LUAS1................................................................................................02-10
3-2. Models: AOUH12LUAS1 and AOUH18LUAS1.............................................................02-14
4. Accessories ...............................................................................................02-18
4-1. Indoor unit ....................................................................................................................02-18
4-2. Outdoor unit..................................................................................................................02-18
5. Optional parts ...........................................................................................02-19
5-1. Indoor unit ....................................................................................................................02-19
6. Refrigerant system diagrams...................................................................02-22
6-1. Models: AOUH09LUAS1 ..............................................................................................02-22
6-2. Models: AOUH12LUAS1 and AOUH18LUAS1.............................................................02-23
7. Wiring diagrams ........................................................................................02-24
7-1. Indoor unit ....................................................................................................................02-24
7-2. Outdoor unit..................................................................................................................02-25
8. PC board diagrams ...................................................................................02-27
8-1. Models: ADUH09LUAS1, ADUH12LUAS1, and ADUH18LUAS1.................................02-27
8-2. Models: AOUH09LUAS1 ..............................................................................................02-28
8-3. Models: AOUH12LUAS1 and AOUH18LUAS1.............................................................02-29

1. Precautions
→hen you start servicing, pay attention to the following points. For detailed precautions, refer to the
installation manual of the products.
CAUTION
• Service personnel
– Any person who is involved with working on or breaking into a refrigerant circuit should hold a
current valid certificate from an industry-accredited assessment authority, which authorizes
their competence to handle refrigerants safely in accordance with an industry recognized as-
sessment specification.
– Servicing shall only be performed as recommended by the equipment manufacturer. Mainte-
nance and repair requiring the assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of flammable refrigerants.
– Servicing shall be performed only as recommended by the manufacturer.
• →ork
– →ork in confined spaces shall be avoided.
– The area around the workspace shall be sectioned off.
– Electric shock may occur. After turning off the power, always wait 5 minutes before touching
electrical components.
– Do not touch the fins of the heat exchanger. Touching the heat exchanger fins could result in
damage to the fins or personal injury such as skin rupture.
– Do not place any other electrical products or household belongings under the product.
– Condensation dripping from the product might get them wet, and may cause damage or mal-
function to the property.
• Service parts information and design are subject to change without notice for product improve-
ment.
• For the latest information of the service parts, refer to our Service Portal.
https://fujitsu-general.force.com/portal/
• Precise figure of the service parts listed in this manual may differ from the actual service parts.
- (02-1) - 1. Precautions
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

2. Indoor unit parts list
2-1. Models: ADUH09LUAS1 and ADUH12LUAS1
¢Exterior parts and chassis
1
2
3
5
6
4
7
8
10
9
11
12
13
2-1. Models: ADUH09LUAS1 and ADUH12LUAS1 - (02-2) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST