Fujitsu AUXG18KVLA User manual

AIR CONDITIONER
Simultaneous multi
SERVICE MANUAL
INDOOR AUXG18KVLA × 2
AUXG22KVLA × 2
AUXG24KVLA × 2
AUXG18KVLA × 3
ARXG18KLLAP × 2
ARXG18KLLAP × 3
ARXG22KMLA × 2
ARXG24KMLA × 2
OUTDOOR
AOHG36KRTA AOHG45KRTA
AOHG54KRTA
SR_SM001EG_05
2021.06.15

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 © 2020, 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
2021.05.19
SR_CH01_SM001EG_02

CONTENTS
1. GENERAL INFORMATION
1. Model lineup ................................................................................................01-1
2. Specifications..............................................................................................01-2
2-1. Compact cassette type ...................................................................................................01-2
2-2. Slim duct type .................................................................................................................01-3
2-3. Duct type ........................................................................................................................01-4
2-4. Outdoor unit....................................................................................................................01-5
3. Dimensions..................................................................................................01-8
3-1. Compact cassette type ...................................................................................................01-8
3-2. Slim duct type ...............................................................................................................01-10
3-3. Duct type ......................................................................................................................01-12
3-4. Outdoor unit..................................................................................................................01-14

1. Model lineup
Indoor unit
Outdoor unitTwin
18 kBtu/h × 2
ARXG18KLLAP
AOHG36KRTA
AUXG18KVLA
Indoor unit
Outdoor unitTwin
22 kBtu/h × 2
ARXG22KMLA
AOHG45KRTA
AUXG22KVLA
Indoor unit
Outdoor unitTwin Triple
24 kBtu/h × 2 18 kBtu/h × 3
ARXG24KMLA ARXG18KLLAP
AOHG54KRTA
AUXG24KVLA
AUXG18KVLA
- (01-1) - 1. Model lineup
GENERAL INFORMATION GENERAL INFORMATION

2. Specifications
2-1. Compact cassette type
Model name AUXG18KVLA AUXG22KVLA AUXG24KVLA
Power supply 3N 400 V ~50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Fan
Airflow rate
Cooling
HIGH
m3/h
680 830 930
MED 580 740 830
LOW 490 600 600
QUIET 410 450
Heating
HIGH 800 860 930
MED 680 760 860
LOW 580 700
QUIET 450 530 530
Type × Q'ty Turbo fan × 1
Motor output W 54
Sound pressure level*1
Cooling
HIGH
dB (A)
38 44 49
MED 34 42 44
LOW 30 36 36
QUIET 26 30 30
Heating
HIGH 43 45 49
MED 38 43 45
LOW 34 40
QUIET 30 33
Heat exchanger type
Dimensions (H × W × D) mm 210 × 1,310 × 13.3
210 × 1,250 × 13.3
210 × 1,360 × 13.3
210 × 1,295 × 13.3
210 × 1,235 × 13.3
Fin pitch mm 1.20 1.45
Rows × Stages 2 × 10 3 × 10
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net mm 245 × 570 × 570
Gross 265 × 730 × 625
Weight Net kg 15 16
Gross 19 20
Connection
pipe
Size Liquid mm (in) Ø 6.35 (1/4)
Gas Ø 12.70 (1/2)
Method Flare
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Drain hose Material PVC
Size mm Ø 25 (I.D.), Ø 32 (O.D.)
Cassette grille
(Option)
Model name UTG-UFGF-W
Material PS
Color White
Approximate color of Munsell 9PB 9.1/0.2
Dimensions
(H × W × D)
Net mm 49 × 620 × 620
Gross 120 × 765 × 755
Weight Net kg 2.3
Gross 4.5
Remote controller type (option) Wired remote controller, Wireless remote controller, Mobile app*2 (FGLair™)
NOTES:
• The protective function might work when using it outside the operation range.
• *1: Sound pressure level:
– These are the measured values in the 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.
• *2: Available on Google Play™ store or on App Store®. Optional WLAN adapter is also required. For details, refer to the setting manual.
2-1. Compact cassette type - (01-2) - 2. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2-2. Slim duct type
Model name ARXG18KLLAP
Power supply 3N 400 V ~50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Fan
Airflow rate
Cooling
HIGH
m3/h
940
MED 880
LOW 820
QUIET 750
Heating
HIGH 940
MED 880
LOW 820
QUIET 750
Type × Q'ty Sirocco fan × 3
Motor output W 96
Recommended static pressure Pa 0 to 90
Sound pressure level*1
Cooling
HIGH
dB (A)
32
MED 30
LOW 29
QUIET 27
Heating
HIGH 32
MED 30
LOW 29
QUIET 27
Heat exchanger type
Dimensions (H × W × D) mm 294 × 700 × 39.9
Fin pitch mm 1.30
Rows × Stages 3 × 14
Pipe type Copper tube
Fin type Aluminum
Enclosure Material Steel sheet
Color —
Dimensions
(H × W × D)
Net mm 198 × 900 × 620
Gross 276 × 1,168 × 772
Weight Net kg 20
Gross 26
Connection
pipe
Size Liquid mm (in) Ø 6.35 (1/4)
Gas Ø 12.70 (1/2)
Method Flare
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Drain hose Material PVC
Size mm Ø 25 (I.D.), Ø 32 (O.D.)
Remote controller type (option) Wired remote controller, Wireless remote controller, Mobile app*2 (FGLair™)
NOTES:
• Values mentioned in the table are based on the following conditions:
– Static pressure: 25 Pa
• The protective function might work when using it outside the operation range.
• *1: Sound pressure level:
– These are the measured values in the 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.
• *2: Available on Google Play™ store or on App Store®. Optional WLAN adapter is also required. For details, refer to the setting manual.
2-2. Slim duct type - (01-3) - 2. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2-3. Duct type
Model name ARXG22KMLA ARXG24KMLA
Power supply 3N 400 V ~50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Fan
Airflow rate
Cooling
HIGH
m3/h
1,100
MED 910
LOW 750
QUIET 580
Heating
HIGH 1,100
MED 910
LOW 750
QUIET 580
Type × Q'ty Sirocco fan × 2
Motor output W 106
Recommended static pressure Pa 30 to 150
Sound pressure level*1
Cooling
HIGH
dB (A)
31
MED 29
LOW 27
QUIET 25
Heating
HIGH 31
MED 29
LOW 27
QUIET 25
Heat exchanger type
Dimensions (H × W × D) mm 294 × 1,000 × 39.9
Fin pitch mm 1.40
Rows × Stages 3 × 14
Pipe type Copper
Fin type Aluminum
Enclosure Material Steel sheet
Color —
Dimensions
(H × W × D)
Net mm 270 × 1,135 × 700
Gross 300 × 1,320 × 790
Weight Net kg 35
Gross 43
Connection
pipe
Size Liquid mm (in) Ø 6.35 (1/4)
Gas Ø 12.70 (1/2)
Method Flare
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Drain port Material Steel
Size mm Ø 35.7 (I.D.), Ø 38.1 (O.D.)
Remote controller type (option) Wired remote controller, Wireless remote controller, Mobile app*2 (FGLair™)
NOTES:
• Values mentioned in the table are based on the following conditions:
– Static pressure: 35 Pa
• The protective function might work when using it outside the operation range.
• *1: Sound pressure level:
– These are the measured values in the 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.
• *2: Available on Google Play™ store or on App Store®. Optional WLAN adapter is also required. For details, refer to the setting manual.
2-3. Duct type - (01-4) - 2. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2-4. Outdoor unit
Type Inverter heat pump
Model name AOHG36KRTA AOHG45KRTA AOHG54KRTA
Power supply 3N 400 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Indoor unit combination AUXG18KVLA × 2
ARXG18KLLAP × 2
AUXG22KVLA × 2
ARXG22KMLA × 2
AUXG24KVLA × 2
ARXG24KMLA × 2
AUXG18KVLA × 3
ARXG18KLLAP × 3
Capacity
Cooling
Rated kW 9.5 12.1 13.4
Btu/h 32,400 41,300 45,700
Min.—Max. kW 2.8—11.2 4.0—13.0 4.5—14.5
Btu/h 9,500—38,200 13,700—44,300 15,300—49,400
Heating
Rated kW 10.8 13.5 15.5
Btu/h 36,800 46,000 52,900
Min.—Max. kW 2.7—12.7 4.2—15.2 4.7—16.5
Btu/h 9,200—43,300 14,300—51,800 3,410—56,300
Input power
Cooling Rated
kW
2.97 4.22 4.42
Max. 4.29 5.03 5.39
Heating Rated 2.88 3.84 4.16
Max. 4.66 4.79 4.88
Current
Cooling Rated
A
5.7 7.7 8.0
Max. 10.5 14.0
Heating Rated 5.6 7.1 7.6
Max. 10.5 14.0
EER Cooling kW/kW 3.20 2.87 3.03
COP Heating 3.75 3.52 3.73
Power factor Cooling %75.4 79.6 80.4
Heating 75.1 78.2 79.4
Starting current A 5.7 7.7 8.0
Maximum operating current*1A 10.5 14.0
Fan
Airflow rate Cooling m3/h 3,750 4,450
Heating 3,750 4,450
Type × Q'ty Propeller × 1
Motor output W 100 120
Sound pressure level*2Cooling dB (A) 55 57
Heating 55 57 59
Sound power level Cooling dB (A) 70 71 73
Heating 70 71 73
Heat exchanger type
Dimensions
(H × W × D)
mm
Main1: 756 × 905 × 18.19
Main2: 756 × 905 × 18.19
Main1: 966 × 905 × 18.19
Main2: 966 × 905 × 18.19
Sub: 966 × 543 × 18.19
Fin pitch Main1: 1.45
Main2: 1.45
Main1: 1.45
Main2: 1.45
Sub: 1.45
Rows × Stages Main1: 1 × 36
Main2: 1 × 36
Main1: 1 × 46
Main2: 1 × 46
Sub: 1 × 46
Pipe type Copper
Fin Type (Material) Aluminum
Surface treatment Blue fin
Compressor Type × Q'ty DC Twin rotary × 1
Motor output W 1,500 2,180
Refrigerant Type (Global warming potential) R32 (675)
Factory charge g 1,900 2,700
Refrigerant oil Type FW68D RmM68AF
Amount cm3600 800
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × W × D)
Net mm 788 × 940 × 320 998 × 940 × 320
Gross 966 × 1,027 × 445 1,176 × 1,027 × 445
Weight Net kg 53 67
Gross 62 77
Connection pipe
Size Liquid mm (in) Ø9.52 (3/8)
Gas Ø15.88 (5/8)
Method Flare
Pre-charge length Total
m
30
Max. length (Total) 50
Max. length
(From the 1st sepa-
ration tube)
To the farthest in-
door unit 20
To the farthest in-
door unit—To the
nearest indoor unit
8
Max. height difference between outdoor
unit and each indoor units 30
Max. height difference between indoor
units 0.5
Operation range Cooling °C -15 to 46
Heating -15 to 24
Drain hose Material LDPE
Size mm Ø13.0 (I. D.), Ø16.0 to Ø16.8 (O. D.)
2-4. Outdoor unit - (01-5) - 2. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Type Inverter heat pump
Model name AOHG36KRTA AOHG45KRTA AOHG54KRTA
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 27 °CDB/19 °CWB, and outdoor temperature of 35 °CDB/24 °CWB.
– Heating: Indoor temperature of 20 °CDB/15 °CWB, and outdoor temperature of 7 °CDB/6 °CWB.
– Pipe length: 5.0 m, Height difference: 0 m. (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum operating current is the total current of the indoor unit and the 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.
• This data is based on EN 14511 standard.
2-4. Outdoor unit - (01-6) - 2. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Specifications for ErP Lot10
Model name AOHG36KRTA
Energy efficiency class Cooling A++
Heating (Average) A+
Pdesign Cooling kW 9.5 (35°C)
Heating (Average) 8.7 (-10°C)
SEER Cooling kWh/kWh 6.1
SCOP Heating (Average) 4.0
Annual energy consump-
tion
QCE kWh/a 545
QHE (Average) 3,044
Sound power level Cooling HIGH dB (A) 70
Heating 70
2-4. Outdoor unit - (01-7) - 2. Specifications
GENERAL INFORMATION GENERAL INFORMATION

3. Dimensions
3-1. Compact cassette type
¢Models: AUXG18KVLA, AUXG22KVLA, and AUXG24KVLA
Unit: mm
285 285
Ceiling
114
B
View A
570: Indoor unit
370
540
Hanging bolt position
a: Ceiling openings
530
530
Hanging bolt position
Drain hose
A
215
19
30
123
30
262
183
Control Box
146
40
C
620
620
IR receiver
Grid type grille
View B View C
114
a: Ceiling openings
Cassette grille (Option [Grid type]) mm 580 to 610
3-1. Compact cassette type - (01-8) - 3. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Installation space requirement
1,000
or more
1,000
or more
1,800
or more
262
or more
Strong and durable ceiling
Obstruction
Floor
Unit: mm
Maximum height from floor to ceiling (Unit: mm)
Standard 2,700
High ceiling 3,000
3-way direction setting:
100 or more*
Unit: mm
NOTES:
• To set “3-direction”, optional Air outlet shutter plate (UTR-YDZB) must be installed, and the “out-
let-direction” need to be switched to “3-way” by remote controller.
*When installing the indoor unit, be careful about the maintenance space.
• In 3-way outlet mode, changing of ceiling height setting by function setting 20 is prohibited.
(Ceiling height setting [function setting 20] is allowed to be changed only in 4-way outlet mode.)
3-1. Compact cassette type - (01-9) - 3. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

3-2. Slim duct type
¢Model: ARXG18KLLAP
Unit: mm
Rear view View A
Top view
Side view
Front view
Bottom view
Drain port
51
774
174
71
152
87
56
850
934
100 × 8 = 800
30
377
167
119
89
78
55
47
10
620
371
264
144
69
850
864
900
43
20
198
168
151
78 55
A
3-2. Slim duct type - (01-10) - 3. 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
Indoor unit
Right
side
150
or more
400
or more
Service access Ceiling
2500 or more
(When no ceiling)
Floor
240 or more
20 or more
20 or more
300 or more
Unit: mm
3-2. Slim duct type - (01-11) - 3. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

3-3. Duct type
¢Models: ARXG22KMLA and ARXG24KMLA
Front view
Top view
Side view (L) Side view (R)
Rear view
Unit: mm
•When using a square duct
Unit: mm
Ø 3.2
219
46
18
P176 x 6 = 1,044
109
23
3-3. Duct type - (01-12) - 3. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

•Bottom air intake hole
Unit: mm
108 1,015
16 240
¢Installation space requirement
Unit: mm
150 or more300 or more
Floor
2,500 or more
(When no ceiling)
3-3. Duct type - (01-13) - 3. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

3-4. Outdoor unit
¢Model: AOHG36KRTA
Unit: mm
Top view
Bottom view
Side viewFront view
940
3 Way valve
(Gas)
786.2
23.4
12.9
129.1
85.3
50 95
29
296.2
265.7
Pipe port
(Gas valve)
3 Way valve
(Liquid)
(Liquid valve)
Ф28: Cable port
Ф28: Cable port
89
650
35.748
143147
39.8
53.9: Liquid
40 320
354.8
62.9: Gas
320
139.8
Ф28: Cable port
Ф28: Cable port
96
50 120
Pipe port
5525
40 5
264.6
351.9
Pipe & Cable port
47.6
15.262.6
15.6
Rear view
50
Ф28: Cable port
Ф28: Cable port
25
141.9
70
67
Pipe port
3-4. Outdoor unit - (01-14) - 3. Dimensions
GENERAL INFORMATION GENERAL INFORMATION