Fujitsu ASHG18KMTE User manual

AIR CONDITIONER
Wall mounted type
SERVICE MANUAL
INDOOR
ASHG18KMTE
ASHG24KMTE
OUTDOOR
AOHG18KMTA AOHG24KMTA
SR_AS070EG_02
2022.03.30

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 © 2022 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
2022.03.11
SR_CH01_AS070EG_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 Wall mounted
Inverter heat pump
Model name ASHG18KMTE ASHG24KMTE
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Capacity
Cooling
Rated k→ 5.20 7.10
Btu/h 17,700 24,200
Min.—Max. k→ 0.90—6.00 0.90—8.30
Btu/h 3,100—20,500 3,100—28,300
Heating
Rated k→ 6.30 8.00
Btu/h 21,500 27,200
Min.—Max. k→ 0.90—8.70 0.90—10.10
Btu/h 3,100—29,600 3,000—34,400
Input power
Cooling Rated
k→
1.39 2.08
Min.—Max. 0.09—1.66 0.24—3.15
Heating Rated 1.56 1.91
Min.—Max. 0.09—2.86 0.14—3.00
Fan
HIGH
→
37.5 61.6
MED 22.9 26.7
LO→ 13.3 13.3
QUIET 8.2 8.2
Current Cooling Rated A 6.1 9.3
Heating 7.0 8.6
EER Cooling k→/k→ 3.74 3.41
COP Heating 4.04 4.19
Sensible capacity Cooling k→ 4.05 5.30
Power factor Cooling %98 98
Heating 98 96
Moisture removal L/h (pints/h) 1.7 (3.0) 2.7 (4.8)
Maximum operating current *1 Cooling A9.5 13.5
Heating 13.5 16.0
Fan
Airflow rate
Cooling
HIGH
m3/h
980 1,170
MED 810 850
LO→ 640 640
QUIET 510 510
Heating
HIGH 1,020 1,170
MED 850 850
LO→ 640 640
QUIET 510 510
Type × Q'ty Crossflow fan × 1
Motor output → 59
Sound pressure level *2
Cooling
HIGH
dB (A)
45 49
MED 40 40
LO→ 35 35
QUIET 29 29
Heating
HIGH 46 49
MED 40 40
LO→ 35 35
QUIET 29 29
Heat exchanger type
Dimensions (H × → × D)
mm
Main1: 210 × 798 × 26.6, Main2: 135 × 798 × 20
Sub1: 84 × 798 × 13.3, Sub2: 84 × 798 × 13.3
Fin pitch Main1: 1.2, Main2: 1.1
Sub1: 1.4, Sub2: 1.4
Rows × Stages Main1: 2 × 10, Main2: 2 × 8
Sub1: 1 × 4, Sub2: 1 × 4
Pipe type Copper
Fin type Aluminum
Enclosure
Material Polystyrene
Color →hite
Approximate color of Munsell N 9.25/
Dimensions
(H × → × D)
Net mm 280 × 980 × 240
Gross 322 × 1,078 × 346
→eight Net kg 13.0
Gross 18
Connection pipe Size Liquid mm (in) Ø6.35 (Ø1/4) Gas Ø12.70 (Ø1/2)
Method Flare
Drain hose Material PP + HDPE
Tip diameter mm Ø13.8 (I.D.), Ø15.8 to Ø16.7 (O.D.)
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Remote control →ireless remote controller (Option: →ired remote controller, Mobile app*3 [FGLair™])
1-1. Indoor unit - (01-1) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Type Wall mounted
Inverter heat pump
Model name ASHG18KMTE ASHG24KMTE
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 27 °CDB/19 °C→B, and outdoor temperature of 35 °CDB/24 °C→B.
– Heating: Indoor temperature of 20 °CDB/15 °C→B, and outdoor temperature of 7 °CDB/6 °C→B.
– Pipe length: 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®. 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

Specifications for ErP Lot10
Model name ASHG18KMTE ASHG24KMTE
Energy efficiency class Cooling A++
Heating (Average) A++ A+
Pdesign Cooling k→ 5.2 (35°C) 7.1 (35°C)
Heating (Average) 4.8 (-10°C) 7.1 (-10°C)
SEER Cooling k→h/k→h 7.77 7.30
SCOP Heating (Average) 4.60 4.20
Annual energy consumption QCE k→h/a 234 340
QHE (Average) 1,460 2,362
Sound power level Cooling HIGH dB (A) 60 65
Heating 61 65
1-1. Indoor unit - (01-3) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name AOHG18KMTA AOHG24KMTA
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Starting current A 7.0 8.6
Fan
Airflow rate Cooling m3/h 2,350 3,240
Heating 2,100 2,820
Type × Q'ty Propeller fan × 1
Motor output → 49
Sound pressure level *1 Cooling dB (A) 50 54
Heating 50 52
Sound power level Cooling dB (A) 65 67
Heating 65 66
Heat exchanger type
Dimensions
(H × → × D) mm
Main1: 588 × 881 × 18.19
Main2: 588 × 851 × 18.19
Main1: 672 × 881 × 18.19
Main2: 672 × 851 × 18.19
Fin pitch 1.3
Rows × Stages 1 × 28 1 × 32
Pipe type Copper tube
Fin type Type (Material) Aluminum
Surface treatment PC fin
Compressor Type DC twin rotary
Motor output → 900 1,060
Refrigerant Type (Global warming potential) R32 (675)
Charge g 1,020 1,320
Refrigerant oil Type F→68S RmM68AF
Amount cm3350 400
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × → × D)
Net mm 632 × 799 × 290 716 × 820 × 315
Gross 692 × 940 × 375 776 × 961 × 450
→eight Net kg 36 42
Gross 40 46
Connection pipe
Size Liquid mm (in) Ø6.35 (Ø1/4)
Gas Ø12.70 (Ø1/2)
Method Flare
Pre-charge length
m
15
Max. length 25 30
Max. height difference 20 25
Operation range Cooling °C -10 to 46
Heating -15 to 24
Drain hose Material PP
Size mm Ø13.0 (I.D.), Ø16.0 to Ø16.7 (O.D.)
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 27 °CDB/19 °C→B, and outdoor temperature of 35 °CDB/24 °C→B.
– Heating: Indoor temperature of 20 °CDB/15 °C→B, and outdoor temperature of 7 °CDB/6 °C→B.
– Pipe length: 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.
1-2. Outdoor unit - (01-4) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: ASHG18KMTE and ASHG24KMTE
Unit: mm
for pipe inlet Ø65
50
60 430
52
980 240
280
Outline of indoor unit
for pipe inlet Ø65
400413 9077
50
72
418
91
417
482
510
2-1. Indoor unit - (01-5) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

Installation space requirement
Provide sufficient installation space for product safety.
Unit: mm
1,500 or more
1,800 or more
The flare connection
part should be installed
outdoors.
50 or more
40or more
117 or more
71 or more
70 or more
160 or more
Wall hook bracket
Outline of the indoor unit
2-1. Indoor unit - (01-6) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢Model: AOHG18KMTA
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

¢Model: AOHG24KMTA
Unit: mm
Side viewSide view Front view
Top view
16 315
20 18
Airflow
600 109
353 330
Pitch of bolts for installation
Pitch of bolts for installation
4-
M1 0 hole
82019 68
716
20
Drain port Ø42
37
410
Bottom view Side view (Valve part)
119
184
194
2-2. Outdoor unit - (01-8) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2022.03.11
SR_CH02_AS070EG_02

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Indoor unit parts list....................................................................................02-2
2-1. Models: ASHG18KMTE and ASHG24KMTE..................................................................02-2
3. Outdoor unit parts list.................................................................................02-6
3-1. Model: AOHG18KMTA ...................................................................................................02-6
3-2. Model: AOHG24KMTA .................................................................................................02-10
4. Accessories ...............................................................................................02-14
4-1. Indoor unit ....................................................................................................................02-14
4-2. Outdoor unit..................................................................................................................02-15
5. Refrigerant system diagrams...................................................................02-16
5-1. Model: AOHG18KMTA .................................................................................................02-16
5-2. Model: AOHG24KMTA .................................................................................................02-17
6. Wiring diagrams ........................................................................................02-18
6-1. Indoor unit ....................................................................................................................02-18
6-2. Outdoor unit..................................................................................................................02-19
7. PC board diagrams ...................................................................................02-21
7-1. Models: ASHG18KMTE and ASHG24KMTE................................................................02-21
7-2. Model: AOHG18KMTA .................................................................................................02-22
7-3. Model: AOHG24KMTA .................................................................................................02-23

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
– Prior to beginning work on systems containing flammable refrigerants, safety checks are nec-
essary to ensure that the risk of ignition is minimized. →hen repairing the refrigerant system,
refer to the precautions written in the installation manual of the products before you start ser-
vicing.
– →ork 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.
– →ork 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.
– 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.
• 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: ASHG18KMTE and ASHG24KMTE
¢Exterior parts
1
2
2
6
11
12
13
16
15
18 17
a
b
c
13
14
7
4
8
5
3
10 9
2-1. Models: ASHG18KMTE and ASHG24KMTE - (02-2) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

Item no. Part no. Part name Service part
1 9388158013 Bracket panel ♦
2 9387476002 Screw cap ♦
3 9383729027 →ire cover assy B ♦
4 9387597066 →ire cover assy ♦
5 9383765056 →LAN adapter holder assy ♦
6 9387479010 Louver assy (Up/Down) ♦
7 9323342040 Under cover R ♦
8 9317250009 Air cleaning filter assy ♦
9 9332438703 →ireless remote controller ♦
10 9318912005 Remote controller holder ♦
11 9384977137 Front panel total assy ♦
12 9387756111 Intake grille assy ♦
13 9323340008 Air filter ♦
14 9333719009 Grille clamper L ♦
15 9333704005 Grille clamper R ♦
16 9323341043 Under cover L ♦
17 9333608006 Bush ♦
18 9383730030 Louver spring ♦
a— Front panel —
b— Panel cover —
c— Front panel B —
2-1. Models: ASHG18KMTE and ASHG24KMTE - (02-3) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Chassis
60
60
60
51
50
74
63
64 62
61
65
73
68
70
71
67
66
a
53
b
54
55
c
56
57
72
71
52
58
59
58
69
2-1. Models: ASHG18KMTE and ASHG24KMTE - (02-4) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST