Fujitsu AUXG24KVLA User manual

AIR CONDITIONER
Cassette type
SERVICE MANUAL
INDOOR
AUXG24KVLA
OUTDOOR
AOHG24KATA
SR_AU018EG_01
2019.10.24

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 © 2019 Fujitsu General Limited. All rights reserved.

CONTENTS
1. GENERAL INFORMATION
2. TECHNICAL DATA AND PARTS LIST

1. GENERAL INFORMATION
2019.10.24
SR_CH01_AU017EG_01

CONTENTS
1. GENERAL INFORMATION
1. Specifications..............................................................................................01-1
1-1. Indoor unit ......................................................................................................................01-1
1-2. Outdoor unit....................................................................................................................01-4
2. Dimensions..................................................................................................01-5
2-1. Indoor unit ......................................................................................................................01-5
2-2. Outdoor unit....................................................................................................................01-7

1. Specifications
1-1. Indoor unit
Type
Cassette
Inverter heat pump
Model name AUXG24KVLA
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Capacity
Cooling
Rated kW 6.80
Btu/h 23,200
Min.—Max. kW 0.90—7.40
Btu/h 3,100—25,200
Heating
Rated kW 7.50
Btu/h 25,600
Min.—Max. kW 0.90—8.60
Btu/h 3,100—29,300
Input power
Cooling Rated
kW
2.26
Max. 2.79
Heating Rated 2.08
Max. 2.70
Current Cooling Rated A 10.0
Heating 9.1
Power factor Cooling %98.4
Heating 98.9
EER Cooling kW/kW 3.01
COP Heating 3.61
Moisture removal L/h (pints/h) 2.7 (4.8)
Maximum operating current *1 Cooling A12.6
Heating 12.6
Fan
Airflow rate
Cooling
HIGH
m3/h
930
MED 830
LOW 600
QUIET 450
Heating
HIGH 930
MED 860
LOW 700
QUIET 530
Type × Q'ty Turbo × 1
Motor output W 54
Sound pressure level *2
Cooling
HIGH
dB (A)
49
MED 44
LOW 36
QUIET 30
Heating
HIGH 49
MED 45
LOW 40
QUIET 33
Heat exchanger type
Dimensions
(H × W × D)
mm
Main1: 210 × 1,360 × 13.3
Main2: 210 × 1,295 × 13.3
Main3: 210 × 1,235 × 13.3
Fin pitch
Main1: 1.45
Main2: 1.45
Main3: 1.45
Rows × Stages
Main1: 1 × 10
Main2: 1 × 10
Main3: 1 × 10
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net mm 245 × 570 × 570
Gross 265 × 730 × 625
Weight Net kg 16
Gross 20
Connection pipe Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 12.70 (Ø 1/2)
Method Flare
Operation range Cooling °C 18 to 32
%RH 80 or less
Heating °C 16 to 30
Cassette grille
(Grid type: Option)
Material Polystyrene
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 control (Option) Wired remote controller, Wireless remote controller, Mobile app*3 (FGLair™)
Drain hose Material PVC
Size mm VP25 [Ø 25(I.D.),Ø 32(O.D.)]
1-1. Indoor unit - (01-1) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Type
Cassette
Inverter heat pump
Model name AUXG24KVLA
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.
• *3: Available on Google Play™ store or on App Store®. Optional WLAN adapter is also required. For details, refer to the setting manual.
1-1. Indoor unit - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Specifications for ErP Lot10
Model name AUXG24KVLA
Energy efficiency
class
Cooling A+
Heating (Average) A
Pdesign Cooling kW 6.8 (35°C)
Heating (Average) 5.4 (-10°C)
SEER Cooling kWh/kWh 5.90
SCOP Heating (Average) 3.80
Annual energy con-
sumption
QCE kWh/a 403
QHE (Average) 1,988
Sound power level Cooling HIGH dB (A) 59
Heating 61
1-1. Indoor unit - (01-3) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name AOHG24KATA
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Starting current A 10.0
Fan
Airflow rate Cooling m3/h 2,885
Heating 2,350
Type × Q'ty Propeller × 1
Motor output W 49
Sound pressure level *1 Cooling dB (A) 54
Heating 55
Sound power level Cooling dB (A) 66
Heating 67
Heat exchanger type
Dimensions
(H × W × D) mm
Main1: 588 × 881 × 18.19
Main2: 588 × 851 × 18.19
Fin pitch Main1: 1.3
Main2: 1.3
Rows × Stages Main1: 1 × 28
Main2: 1 × 28
Pipe type Copper
Fin Type (Material) Aluminum
Surface treatment PC fin
Compressor Type × Q'ty DC Twin rotary × 1
Motor output W 1,060
Refrigerant Type (Global warming potential) R32 (675)
Factory charge g 1,250
Refrigerant oil Type RmM68AF
Amount cm3400
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × W × D)
Net mm 632 × 799 × 290
Gross 692 × 940 × 375
Weight Net kg 38
Gross 42
Connection pipe
Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 12.70 (Ø 1/2)
Method Flare
Pre-charge length
m
20
Max. length 25
Max. height difference 20
Operation range Cooling °C -10 to 46
Heating -15 to 24
Drain hose Material PP
Size mm Ø13.0 (I. D.), Ø16.0 to Ø16.8 (O. D.)
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: 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 - (01-4) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Model: 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
2-1. Indoor unit - (01-5) - 2. 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.)
2-1. Indoor unit - (01-6) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢Model: AOHG24KATA
Unit: mm
Side view
Side view Front view
Bottom view Side view (Valve part)
Top view
580
79919 68 16 290
33 30
109
353
632
20
330
Pitch of bolts for installation
Pitch of bolts for installation
4-
M1 0 hole
Airflow
Drain port Ø42
37
120
184
399 180
2-2. Outdoor unit - (01-7) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit - (01-8) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2019.10.24
SR_CH02_AU017EG_01

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Cassette grille (optional part) parts list.....................................................02-2
2-1. Model: UTG-UFGF-W.....................................................................................................02-2
3. Indoor unit parts list....................................................................................02-5
3-1. Model: AUXG24KVLA ....................................................................................................02-5
4. Outdoor unit parts list...............................................................................02-10
4-1. Model: AOHG24KATA..................................................................................................02-10
5. Accessories ...............................................................................................02-14
5-1. Indoor unit ....................................................................................................................02-14
5-2. Outdoor unit..................................................................................................................02-14
6. Optional parts ...........................................................................................02-15
6-1. Indoor unit ....................................................................................................................02-15
7. Refrigerant system diagrams...................................................................02-18
7-1. Model: AOHG24KATA..................................................................................................02-18
8. PC board diagrams ...................................................................................02-19
8-1. Model: AOHG24KATA..................................................................................................02-19
8-2. Model: AOHG24KATA..................................................................................................02-20

1. Precautions
When 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.
• Work
– Prior to beginning work on systems containing flammable refrigerants, safety checks are nec-
essary to ensure that the risk of ignition is minimized. When repairing the refrigerant system,
refer to the precautions written in the installation manual of the products before you start ser-
vicing.
– Work shall be undertaken under a controlled procedure so as to minimize the risk of a
flammable gas or vapor being present while the work is being performed.
– All maintenance staff and others working in the local area shall be instructed on the nature of
work being carried out.
– Work in confined spaces shall be avoided.
– The area around the workspace shall be sectioned off.
– Ensure that the conditions within the area have been made safe by control of flammable ma-
terial.
• Checking for presence of refrigerant
– The area shall be checked with an appropriate refrigerant detector prior to and during work, to
ensure the technician is aware of potentially flammable atmospheres.
– Ensure that the leak detection equipment being used is suitable for use with flammable refrig-
erants, i.e. non-sparking, adequately sealed or intrinsically safe.
• 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. Cassette grille (optional part) parts list
2-1. Model: UTG-UFGF-W
¢Panels
Parts No.DescriptionRef
1
2
3
4
5
Decoration Panel
without Insulations
Display panel assy
Panel Cover
without Insulations
Indicator PCB
Connector Cover
9382821005
9383100031
9375530013
9711310002
9375549015
2
3
4
5
1
2-1. Model: UTG-UFGF-W - (02-2) - 2. Cassette grille (optional part) parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Intake grille
Parts No.DescriptionRef
11
12
13
14
Intake grille
Long Life Filter
Hook bracket
Grille hook
9382863005
9375533014
9375546014
9375532031
12
13
14
11
2-1. Model: UTG-UFGF-W - (02-3) - 2. Cassette grille (optional part) parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Louvers and motors
Parts No.DescriptionRef
21
22
23
24
Step Motor (White connector)
Step Motor (Red connector)
Flap assy A
Flap assy B
9900139070
9900139087
9375727048
9377759047
21
22
23
24
2-1. Model: UTG-UFGF-W - (02-4) - 2. Cassette grille (optional part) parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST