Fujitsu ARXG45KHTA User manual

AIR CONDITIONER
Duct type
SERVICE MANUAL
INDOOR
ARXG45KHTA
ARXG54KHTA
OUTDOOR
AOYG45KRTA
AOYG54KRTA
SR_AR015EF_01
2019.10.01

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
2019.10.01
SR_CH01_AR015EF_01

CONTENTS
1. GENERAL INFORMATION
1. Specifications..............................................................................................01-1
1-1. Indoor unit ......................................................................................................................01-1
1-2. Outdoor unit....................................................................................................................01-2
2. Dimensions..................................................................................................01-3
2-1. Indoor unit ......................................................................................................................01-3
2-2. Outdoor unit....................................................................................................................01-5

1. Specifications
1-1. Indoor unit
Type
Duct
Inverter heat pump
Model name ARXG45KHTA ARXG54KHTA
Power supply 3N 400 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Capacity
Cooling
Rated kW 12.1 13.4
Btu/h 41,300 45,700
Min.—Max. kW 4.0—14.0 5.0—14.5
Btu/h 13,600—47,800 17,100—49,400
Heating
Rated kW 13.5 15.5
Btu/h 46,100 52,900
Min.—Max. kW 5.0—16.2 5.5—18.0
Btu/h 17,100—55,300 18,800—61,400
Input power
Cooling Rated
kW
4.16 4.77
Max. 5.22 5.59
Heating Rated 3.61 4.18
Max. 5.07 5.67
Current Cooling Rated A7.6 8.5
Heating Rated 6.8 7.6
Power factor Cooling %79.4 81.7
Heating 77.4 79.5
EER Cooling kW/kW 2.91 2.81
COP Heating 3.74 3.71
Moisture removal L/h (pints/h) 1.5 (2.6) 2.0 (3.5)
Maximum operating current*1Cooling A14
Heating 14
Fan
Airflow rate
Cooling
HIGH
m3/h
3,350
MED 2,850
LOW 2,430
Heating
HIGH 3,350
MED 2,850
LOW 2,430
Type × Q'ty Sirocco fan × 2
Motor output W 490
Static pressure range Pa 100 to 250
Sound pressure level*2
Cooling
HIGH
dB (A)
47
MED 43
LOW 40
Heating
HIGH 47
MED 43
LOW 40
Heat exchanger type
Dimensions (H × W × D) mm 336 × 890 × 53.2
Fin pitch 1.3
Rows × Stages 4 × 16
Pipe type Copper
Fin type Aluminum
Enclosure Material Steel sheet
Color ―
Dimensions
(H × W × D)
Net mm 400 × 1,050 × 500
Gross 460 × 1,230 × 640
Weight Net kg 46
Gross 51
Connection pipe Size Liquid mm (in) Ø9.52 (3/8)
Gas Ø15.88 (5/8)
Method Flare
Operation range Cooling °C 18 to 32
%RH 80 or less
Heating °C 16 to 30
Drain port Material Steel
Size mm Ø23.4 (I.D.), Ø25.4 (O.D.)
Remote control (Option) Wired remote controller, Wireless remote controller, Mobile app*3 (FGLair™)
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 m, Height difference: 0 m. (Between outdoor unit and indoor unit.)
– Standard static pressure: 100 Pa
• 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 - (01-1) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name AOYG45KRTA AOYG54KRTA
Power supply 3N 400 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Starting current A 7.6 8.5
Fan
Airflow rate Cooling m3/h 4,450
Heating 4,450
Type × Q'ty Propeller × 1
Motor output W 120
Sound pressure level *1 Cooling dB (A) 57
Heating 57 59
Sound power level Cooling dB (A) 71 73
Heating 71 73
Heat exchanger type
Dimensions
(H × W × D)
mm
Main1: 966 × 905 × 18.20
Main2: 966 × 905 × 18.20
Sub: 966 × 543 × 18.20
Fin pitch
Main1: 1.45
Main2: 1.45
Sub: 1.45
Rows × Stages
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 2,180
Refrigerant Type (Global warming potential) R32 (675)
Factory charge g 2,700
Refrigerant oil Type RmM68AF
Amount cm3800
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × W × D)
Net mm 998 × 940 × 320
Gross 1,176 × 1,027 × 445
Weight Net kg 67
Gross 77
Connection pipe
Size Liquid mm (in) Ø 9.52 (3/8)
Gas Ø 15.88 (5/8)
Method Flare
Pre-charge length
m
30
Max. length 50
Max. height difference 30
Operation range Cooling °C -15 to 46
Heating -15 to 24
Drain hose Material LDPE
Size mm Ø 13.0 (I. D.), Ø 16.0 to Ø 16.7 (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 - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: ARXG45KHTA and ARXG54KHTA
Unit: mm
Front view
Top view
Side view (L)
Side view (R)
Rear view
P5 ×120 = 600
585
85
P120 ×2 = 240
108
208
356
371
1,080
1,000
862
126
1,050
851
125
295 26
28
155
14
324
400
123
41
500
139
12-Φ3
Drain
port
71
88
2-1. Indoor unit - (01-3) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Installation space requirement
Provide sufficient installation space for product safety.
Models: ARXG45KHTA and ARXG54KHTA
Installation by which service space is mode on top of the unit (recommended).
350 or
more
450 or more
(Service space)
Service access
Unit: mm
Installation by which service space is carried out from the bottom of the unit.
20 or
more
450 or more
(Service space)
Service access
Unit: mm
2-1. Indoor unit - (01-4) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢Models: AOYG45KRTA and AOYG54KRTA
Unit: mm
Top view
Bottom view
Side viewFront view
940
996.2
266.7
Pipe & Cable port
Rear view
Ф28: Cable port
Pipe port
650
35.748
143147
39.8
53.9 Liquid
40 320
354.8
62.9 Gas
12.9
297.2
(Gas valve)
(Liquid valve)
Ф28
Cable port
1-1/8
(29)
Pipe port
23.4
129.1
85.3
50
29
Pipe port
A
95
89
A
3 Way valve
(Liquid)
3 Way valve
(Gas)
320
139.8
96
40 5
Ф28
Cable port
120
Pipe port
55
25
50
B
B
50
25
141.9 70
67 Pipe port
264.6
351.9
47.6
15.262.6
15.6
2-2. Outdoor unit - (01-5) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2019.10.01
SR_CH02_AR015EF_01

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Indoor unit parts list....................................................................................02-2
2-1. Models: ARXG45KHTA and ARXG54KHTA...................................................................02-2
3. Outdoor unit parts list.................................................................................02-4
3-1. Models: AOYG45KRTA and AOYG54KRTA ..................................................................02-4
4. Accessories .................................................................................................02-8
4-1. Indoor unit ......................................................................................................................02-8
4-2. Outdoor unit....................................................................................................................02-8
5. Optional parts .............................................................................................02-9
5-1. Indoor unit ......................................................................................................................02-9
5-2. Outdoor unit..................................................................................................................02-10
6. Refrigerant system diagrams...................................................................02-11
6-1. Models: AOYG45KRTA and AOYG54KRTA ................................................................02-11
7. PC board diagrams ...................................................................................02-12
7-1. Models: ARXG45KHTA and ARXG54KHTA.................................................................02-12
7-2. Models: AOYG45KRTA and AOYG54KRTA ................................................................02-13

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. Indoor unit parts list
2-1. Models: ARXG45KHTA and ARXG54KHTA
¢Casing and fan
2
3
14
8
15
12
13
5
6
4
7
10
1
(Connector : black)
11
12 Drain Pan Assy
11 Pipe Thermistor
7 Sirocco Fan
6 Casing B
5 Casing A
2 Kit (Panel Front Sub Assy)
9372579015
9900814069
9372057018
9372059029
9372058015
4 Motor, Induct 9602802012
9372637029
15 Drain Pan S Sub Assy
13 Kit (Panel Right Sub Assy) 9372916025
9372582015
14 Kit (Panel Left Sub Assy)
8 Kit (Panel Rear Sub Assy)
3 Panel Fan Assy
9372581018
9372035009
10 Evaporator Sub Assy 9372584248
9372636022
1 Plate Top Sub Assy 9372576014
Description Parts numberRef.
(Connector : white)
9
9 Room Thermistor 9703299216
2-1. Models: ARXG45KHTA and ARXG54KHTA - (02-2) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Main PC board
27
23
25
24
26
21
22
Description Parts numberRef.
23 Transformer (Power)
25 Terminal 3P
Terminal 3P24
26 Relay
27 Capacitor, Plastic 9900269111
9704129017
9306489045
9703345012
9900294014
21 Power Supply PCB
22 Main PCB (45)
22 Main PCB (54)
9705246355
9705668119
9705246348
2-1. Models: ARXG45KHTA and ARXG54KHTA - (02-3) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

3. Outdoor unit parts list
3-1. Models: AOYG45KRTA and AOYG54KRTA
¢Exterior parts and chassis
15
6
9
12
7
2
1
8
16
22
17
18
14
13
25
26
19
23
24
a
b
11
10
4
5
3
3
20 21
3-1. Models: AOYG45KRTA and AOYG54KRTA - (02-4) - 3. Outdoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

Item no. Part no. Part name Service part
1 9383880001 Top panel assy ♦
2 9381013005 Protective net ♦
3 9375361013 Net rubber ♦
4 9900984038 Thermistor (Heat exchanger) ♦
5 9900727154 Thermistor assy ♦
6 9383607004 Thermo holder ♦
7 9383874017 Right panel sub assy ♦
8 9383879005 Rear pipe cover ♦
9 9711424013 Inverter PCB ♦
10 9900634025 Reactor assy ♦
11 9901053016 Terminal ♦
12 9711431097 Main PCB (Service) (for 45 model) ♦
9711431103 Main PCB (Service) (for 54 model) ♦
13 313166024302 Drain cap ♦
14 9303029015 Drain assy ♦
15 9383871009 Base assy ♦
16 9383876011 Service panel sub assy ♦
17 9383878008 Front pipe cover ♦
18 9351355005 Emblem rear ♦
19 9383863011 Front panel assy ♦
20 9383604003 Blow grille ♦
21 9383689000 Blow grille insulation ♦
22 9383882012 Left panel sub assy ♦
23 9383336003 Propeller fan ♦
24 9603733018 Brushless motor ♦
25 9383862014 Motor bracket assy ♦
26 9374420605 Condenser sub assy ♦
a— Separate wall assy —
b— Control box unit —
3-1. Models: AOYG45KRTA and AOYG54KRTA - (02-5) - 3. Outdoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Compressor
58
57
53
60
62
59
b
50
52
A
c
d
A
61
51
55
a
54
56
B
B
3-1. Models: AOYG45KRTA and AOYG54KRTA - (02-6) - 3. Outdoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST