Fujitsu ASTG30KMTC User manual

AIR CONDITIONER
Wall mounted type
SERVICE MANUAL
INDOOR
ASTG30KMTC
ASTG34KMTC
OUTDOOR
AOTG30KMTC AOTG34KMTC
SR_AS004EF_04
2020.05.12

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
Trademarks
The following term and logo are trademarks of Fujitsu General Limited in the United States, other countries
or both:
FGLair™
Android and Google Play are trademarks of Google Inc.
App Store is a service mark of Apple Inc., registered in the U.S. and other countries.
IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under
license.
Copyright © 2019, 2020 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
2019.06.27
SR_CH01_AS004EF_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 Wall mounted
Inverter heat pump
Model name ASTG30KMTC ASTG34KMTC
Power supply 240 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Star rating index 10-star standard Cooling 2.0 2.0
Heating 3.0 2.5
Capacity
Cooling
Rated kW 8.50 9.40
Btu/h 29,000 32,000
Min.—Max. kW 2.9—10.5 2.9—11.2
Btu/h 9,900—35,800 9,900—38,200
Heating
Rated kW 9.00 10.30
Btu/h 30,700 35,100
Min.—Max. kW 2.2—11.2 2.7—11.7
Btu/h 7,500—38,200 9,200—39,900
Input power
Cooling Rated
kW
2.46 2.78
Min.—Max. 0.58—3.85 0.59—4.03
Heating Rated 2.34 2.84
Min.—Max. 0.50—4.01 0.60—4.24
Fan W 63 63
Current Cooling Rated A 10.4 11.7
Heating 10.1 11.9
EER Cooling kW/kW 3.45 3.38
COP Heating 3.84 3.63
Sensible capacity Cooling kW 6.00 6.95
Power factor Cooling %98.5 99
Heating 97 99
Moisture removal L/h (pints/h) 2.5 (4.4) 3.5 (6.2)
Maximum operating current *1 Cooling A17.0 19.5
Heating 17.0 19.5
Fan
Airflow rate
Cooling
HIGH
l/s (m3/h)
389 (1,400)
MED 319 (1,150)
LOW 256 (920)
QUIET 200 (720)
Heating
HIGH 389 (1,400)
MED 319 (1,150)
LOW 256 (920)
QUIET 200 (720)
Type × Q'ty Cross flow fan × 1
Motor output W 61
Sound pressure level *2
Cooling
HIGH
dB (A)
51 52
MED 46 47
LOW 40 41
QUIET 33 34
Heating
HIGH 51 51
MED 44 44
LOW 39 38
QUIET 33 33
Heat exchanger
Dimensions (H × W × D) mm
Main: 448 × 900 × 30
Sub1: 126 × 900 × 13.3
Sub2: 84 × 900 × 13.3
Fin pitch Main: 1.2, Sub: 1.4
Rows × Stages Main: 3 × 28, Sub1: 1 × 6, Sub2: 1 × 4
Pipe type Copper tube
Fin type Aluminum
Enclosure
Material Polystyrene
Color White
Approximate color of Munsell N 9.25/
Dimensions
(H × W × D)
Net mm 340 × 1,150 × 280
Gross 405 × 1,270 × 450
Weight Net kg 18.5
Gross 24
Connection pipe Size Liquid mm (in) Ø 9.52 (Ø 3/8) Gas Ø 15.88 (Ø 5/8)
Method Flare
Drain hose Material PVC
Size mm Ø 13.8 (I.D.), Ø 15.8 to Ø 16.7 (O.D.)
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Remote controller Wireless or Mobile app (FGLair*3) (Wired [option])
International Protection rating IPX0
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: 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 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. 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 AOTG30KMTC AOTG34KMTC
Power supply 240 V ~ 50 Hz
Available voltage range 198—264 V
Starting current A 10.7 11.2
Fan
Airflow rate Cooling l/s (m3/h) 861 (3,100) 1,139 (4,100)
Heating 945 (3,400) 1,139 (4,100)
Type × Q'ty Propeller fan × 1
Motor output W 100 111
Sound pressure level *1 Cooling dB (A) 50 50
Heating 54 54
Sound power level dB (A) 67 67
Heat exchanger
Dimensions
(H × W × D) mm 798 × 900 × 36.4
Main1: 882 × 957 × 18.19
Main2: 882 × 927 × 18.19
Sub: 882 × 580 × 18.19
Fin pitch 1.30 1.45
Rows × Stages 2 × 38 Main: 2 × 42, Sub: 1 × 42
Pipe type Copper
Fin type Type (Material) Corrugate (Aluminum)
Surface treatment Corrosion resistance (Blue fin)
Compressor Type × Q'ty DC Twin rotary × 1
Motor output W 2,200
Refrigerant Type R32
Charge g 1,650 2,000
Refrigerant oil Type POE
Amount cm3800
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × W × D)
Net mm 830 × 900 × 330 914 × 970 × 370
Gross 1,000 × 1,050 × 445 1,078 × 1,064 × 479
Weight Net kg 60 74
Gross 68 83
Connection pipe
Size Liquid mm Ø 9.52 (Ø 3/8)
Gas Ø 15.88 (Ø 5/8)
Method Flare
Pre-charge length
m
20 30
Max. length 75
Max. height difference 30
Operation range Cooling °C -10 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.)
International protection rating IPX4
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: 7.5 m, Height difference: 0 m.
• 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.
1-1. Indoor unit - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: ASTG30KMTC and ASTG34KMTC
Unit: mm
1,150
Outline of unit
520 90
20
64
47961108502
520
50 50
11
340
ø80
ø80
340
280
16
1,150
609
672
725
2-1. Indoor unit - (01-3) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

Installation space requirement
Provide sufficient installation space for product safety.
CAUTION
Do not place any other electrical products or household belongings under the product. Conden-
sation dripping from the product might get them wet, and may cause damage or malfunction to
the property.
63 or more
88 or more
50 or more
50 or more
70 or more
Outline of unit
140 or more
1,500 or more
1,800 or more
Unit: mm
2-1. Indoor unit - (01-4) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢Model: AOTG30KMTC
900
650
830
370
99
196
21
9
77 31 330
400
170
147
Top view
Front view Side view
Bottom view
Airflow
4-Ø12 mm hole
Drain cap
mounting places Drain pipe
mounting place
Unit: mm
2-2. Outdoor unit - (01-5) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Model: AOTG34KMTC
ø28: Cable port
ø28: Cable port
50 70
142
21 65
ø 28: Cable port
111
120
50
55
21
155
ø28: Cable port
65 15
50 14
24 12370
410
650
87
89
970
914
21
8
25
131
50
95
Ø28
: Cableport
Ø28
Unit : mm
Top view
Front view Side view Rear view
Bottom view
Detail A
Pipe & cable port
Pipe port Pipe port Pipe port
Airflow
Drain cap
mounting places Drain pipe
mounting place
440
2-2. Outdoor unit - (01-6) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2020.05.12
SR_CH02_AS004EF_05

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Indoor unit parts list....................................................................................02-2
2-1. Models: ASTG30KMTC and ASTG34KMTC ..................................................................02-2
3. Outdoor unit parts list.................................................................................02-4
3-1. Model: AOTG30KMTC ...................................................................................................02-4
3-2. Model: AOTG34KMTC ...................................................................................................02-7
4. Accessories ...............................................................................................02-10
4-1. Indoor unit ....................................................................................................................02-10
4-2. Outdoor unit..................................................................................................................02-10
5. Optional parts ...........................................................................................02-11
5-1. Indoor unit ....................................................................................................................02-11
5-2. Outdoor unit..................................................................................................................02-12
6. Refrigerant system diagrams...................................................................02-13
6-1. Model: AOTG30KMTC .................................................................................................02-13
6-2. Model: AOTG34KMTC .................................................................................................02-14
7. Wiring diagrams ........................................................................................02-15
7-1. Indoor unit ....................................................................................................................02-15
7-2. Outdoor unit..................................................................................................................02-16
8. PC board diagrams ...................................................................................02-18
8-1. Models: ASTG30KMTC and ASTG34KMTC ................................................................02-18
8-2. Model: AOTG30KMTC .................................................................................................02-19
8-3. Model: AOTG34KMTC .................................................................................................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. Indoor unit parts list
2-1. Models: ASTG30KMTC and ASTG34KMTC
¢Exterior parts
18 19 1
2
3
4
6
5
7
8
9
b
12
12
12
12
11
13
14
17
16
15
a
10
Item no. Part no. Part name Service part
1 9386990004 Bracket panel ♦
2 9387056006 Drain hose assy ♦
3 9387063004 Link holder assy ♦
4 9900139186 Step motor ♦
5 9387062007 Gear cover assy ♦
6 9900384234 Step motor ♦
7 9386997003 Cable guide ♦
8 9386958004 Louver U ♦
9 9386959001 Louver Z ♦
10 9387072181 Front panel total assy ♦
11 9382114008 Intake grille assy ♦
12 9386986007 Screw cap ♦
13 9386960007 Air filter ♦
14 9387074017 Wire cover assy ♦
15 9387060010 Casing assy ♦
16 9316177017 Drain cap ♦
17 9315212016 Air clean filter assy ♦
18 9318912005 Remote controller holder ♦
19 9332438628 Remote controller ♦
a— Step motor holder —
b— Front panel —
2-1. Models: ASTG30KMTC and ASTG34KMTC - (02-2) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Evaporator and control
a
62 61 60
50
b
c
d
e
51
52
53 54
56
55
57
58
59
65
63
64
Item no. Part no. Part name Service part
50 9383765025 WLAN adapter holder assy ♦
51 9711141095 Main PCB (For 30 model) ♦
9711141101 Main PCB (For 34 model) ♦
52 9711146045 Display assy ♦
53 9711147035 Indicator PCB ♦
54 9317755061 Pyroelectric sensor ♦
55 9387249019 Display case assy ♦
56 9382134006 Front panel cover B assy ♦
57 9306489045 Terminal ♦
58 9900627027 Thermistor assy ♦
59 9386988001 Room thermistor holder ♦
60 9316568006 Motor cover ♦
61 9603458010 Brushless motor ♦
62 9316601000 Motor cover ♦
63 9387055009 Crossflow fan assy ♦
64 9306628017 Bearing C assy ♦
65 9387064070 Evaporator total assy ♦
a— Rear panel —
b— Box shield assy —
c— Control box —
d— PCB holder A —
e— Control cover —
2-1. Models: ASTG30KMTC and ASTG34KMTC - (02-3) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

3. Outdoor unit parts list
3-1. Model: AOTG30KMTC
¢Exterior parts and chassis
12
3
4
5
7
8
9
10
11
12
6
13
14
15
16
18 17
Item no. Part no. Part name Service part
1 9375381011 Protective net M ♦
2 9374417032 Top panel sub assy ♦
3 9375211011 Thermo holder ♦
4 9374416240 Right panel sub assy ♦
5 9374174010 Valve cover ♦
6 9374166138 Base assy ♦
7 313166024302 Drain cap ♦
8 9303029015 Drain assy ♦
9 9351355005 Rear emblem ♦
10 9374415052 Service panel sub assy ♦
11 9378111011 Fan guard cover ♦
12 9374330010 Fan guard ♦
13 9374414079 Front panel sub assy ♦
14 9366378020 Propeller fan assy ♦
15 9379385015 Brushless motor ♦
16 9374418152 Motor bracket sub assy ♦
17 9374420469 Condenser sub assy ♦
18 9375361013 Net rubber ♦
3-1. Model: AOTG30KMTC - (02-4) - 3. Outdoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Inverter
WhiteYellow Blue Red
a
50
51
b
c
52
53
54
55
56
57
58
59
60
61
62
63
d
e
Item no. Part no. Part name Service part
50 9900223014 Choke coil ♦
51 9707592016 ACTPM ♦
52 9709681220 Transistor PCB ♦
53 9900514013 Heat exchanger thermistor ♦
54 9900827021 Compressor thermistor ♦
55 9900463007 Outdoor temp. thermistor ♦
56 9901041020 Discharge thermistor ♦
57 9704265012 Thermistor ♦
58 9900016104 Terminal ♦
59 9709315057 Demand PCB ♦
60 9709881323 Main PCB ♦
61 9711368003 Filter PCB ♦
62 9709894040 Capacitor PCB ♦
63 9378530010 Heat sink ♦
— 9708549019 Wire with connector
(CN400 on main PCB—CN11 on ACTPM) ♦
— 9708548012 Wire with connector
(CN40 on main PCB—CN301 on transistor PCB) ♦
— 9708550015 Wire with connector
(CN42 on main PCB—CN303 on transistor PCB) ♦
— 9709657034 Wire with connector
(CND02 on main PCB—CN01 on demand PCB) ♦
a— Inverter case assy —
b— Heat sink case —
c— RFM A —
d— Condenser case —
e— Demand PCB holder —
3-1. Model: AOTG30KMTC - (02-5) - 3. Outdoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Compressor
100
102
101
103
104
a
105
106
107
110
108
109
108
109
B
A
B
A
Item no. Part no. Part name Service part
100 9374426133 Accumulator sub assy ♦
101 9321644009 4-way valve assy ♦
102 9900186012 Pressure switch ♦
103 9970110122 Solenoid ♦
104 9374470112 3-way valve sub assy ♦
105 9970095030 Expansion valve coil ♦
106 9321629006 Expansion valve assy ♦
107 9377958020 3-way valve assy ♦
108 9375347024 Sleeve A (comp) ♦
109 9377973016 Special nut ♦
110 9810366009 Compressor ♦
— 9378851177 Compressor cover A ♦
— 9378851016 Compressor cover B ♦
— 9378851023 Compressor cover C ♦
— 9378851184 Compressor cover D ♦
— 9378173576 Pipe insulation ♦
a— Valve plate —
3-1. Model: AOTG30KMTC - (02-6) - 3. Outdoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST