Fujitsu GENERAL ASHG18KMTA Service manual

AIR CONDITIONER
Wall mounted type
DESIGN & TECHNICAL MANUAL
INDOOR
ASHG18KMTA
ASHG24KMTA
OUTDOOR
AOHG18KMTA AOHG24KMTA
DR_AS093EG_03
2020.01.27

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
Part 1. INDOOR UNIT...........................................................................1
1. Specifications................................................................................................2
2. Dimensions....................................................................................................4
2-1. Models: ASHG18KMTA and ASHG24KMTA ...................................................................4
3. Wiring diagrams ............................................................................................6
3-1. Models: ASHG18KMTA and ASHG24KMTA ...................................................................6
4. Capacity table................................................................................................7
4-1. Cooling capacity...............................................................................................................7
4-2. Heating capacity ..............................................................................................................8
5. Fan performance ...........................................................................................9
5-1. Air velocity distributions....................................................................................................9
5-2. Airflow ............................................................................................................................11
6. Operation noise (sound pressure).............................................................13
6-1. Noise level curve............................................................................................................13
6-2. Sound level check point .................................................................................................14
7. Safety devices .............................................................................................15
8. External input and output...........................................................................16
8-1. External input.................................................................................................................17
8-2. External output...............................................................................................................18
8-3. Combination of external input and output.......................................................................19
8-4. Details of function ..........................................................................................................20
9. Group connection .......................................................................................25
10. Remote controller .......................................................................................26
10-1.Wireless remote controller ............................................................................................26
11. Function settings .......................................................................................28
11-1.Function settings by using remote controller.................................................................28
11-2.Custom code setting for wireless remote controller.......................................................33
12. Accessories.................................................................................................34
12-1.Models: ASHG18KMTA and ASHG24KMTA ................................................................34
13. Optional parts .............................................................................................35
13-1.Controllers ....................................................................................................................35
13-2.Others ...........................................................................................................................36

Part 2. OUTDOOR UNIT.....................................................................37
1. Specifications..............................................................................................38
2. Dimensions..................................................................................................39
2-1. Model: AOHG18KMTA...................................................................................................39
2-2. Model: AOHG24KMTA...................................................................................................40
3. Installation space ........................................................................................41
3-1. Models: AOHG18KMTA and AOHG24KMTA ................................................................41
4. Refrigerant circuit .......................................................................................44
4-1. Model: AOHG18KMTA...................................................................................................44
4-2. Model: AOHG24KMTA...................................................................................................45
5. Wiring diagrams ..........................................................................................46
5-1. Model: AOHG18KMTA...................................................................................................46
5-2. Model: AOHG24KMTA...................................................................................................46
6. Capacity compensation rate for pipe length and height difference........47
6-1. Model: AOHG18KMTA...................................................................................................47
6-2. Model: AOHG24KMTA...................................................................................................48
7. Additional charge calculation ....................................................................49
7-1. Model: AOHG18KMTA...................................................................................................49
7-2. Model: AOHG24KMTA...................................................................................................49
8. Airflow..........................................................................................................50
8-1. Model: AOHG18KMTA...................................................................................................50
8-2. Model: AOHG24KMTA...................................................................................................50
9. Operation noise (sound pressure).............................................................51
9-1. Noise level curve............................................................................................................51
9-2. Sound level check point .................................................................................................52
10. Electrical characteristics............................................................................53
11. Safety devices .............................................................................................54
12. Accessories.................................................................................................55
12-1.Models: AOHG18KMTA and AOHG24KMTA ...............................................................55
CONTENTS (continued)

Part 1. INDOOR UNIT
WALL MOUNTED TYPE:
ASHG18KMTA
ASHG24KMTA

1. Specifications
Type
Wall mounted
Inverter heat pump
Model name ASHG18KMTA ASHG24KMTA
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Capacity
Cooling
Rated kW 5.20 7.10
Btu/h 17,700 24,200
Min.—Max. kW 0.90—6.00 0.90—8.30
Btu/h 3,100—20,500 3,100—28,300
Heating
Rated kW 6.30 8.00
Btu/h 21,500 27,200
Min.—Max. kW 0.90—8.70 0.90—10.10
Btu/h 3,100—29,600 3,100—34,400
Input power
Cooling Rated
kW
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
W
37.5 61.6
MED 22.9 26.7
LOW 13.3 13.3
QUIET 8.2 8.2
Current Cooling Rated A 6.1 9.3
Heating 7.0 8.6
EER Cooling kW/kW 3.74 3.41
COP Heating 4.04 4.19
Sensible capacity Cooling kW 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
LOW 640 640
QUIET 510 510
Heating
HIGH 1,020 1,170
MED 850 850
LOW 640 640
QUIET 510 510
Type × Q'ty Cross flow fan × 1
Motor output W 59
Sound pressure level *2
Cooling
HIGH
dB (A)
45 49
MED 40 40
LOW 35 35
QUIET 29 29
Heating
HIGH 46 49
MED 40 40
LOW 35 35
QUIET 29 29
Heat exchanger type
Dimensions (H × W × 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 White
Approximate color of Munsell N 9.25/
Dimensions
(H × W × D)
Net mm 280 × 980 × 240
Gross 322 × 1,078 × 346
Weight Net kg 13.0
Gross 18
Connection pipe Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 12.70 (Ø 1/2)
Method Flare
Drain hose Material PP + HDPE
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 control Wireless remote controller (Option: Wired 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.)
• 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.
- 2 - 1. Specifications
WALL MOUNTED ASHG18, 24KMTA WALL MOUNTED ASHG18, 24KMTA

Specifications for ErP Lot10
Model name ASHG18KMTA ASHG24KMTA
Energy efficiency class Cooling A++
Heating (Average) A+
Pdesign Cooling kW 5.2 (35°C) 7.1 (35°C)
Heating (Average) 4.8 (-10°C) 7.1 (-10°C)
SEER Cooling kWh/kWh 7.77 7.28
SCOP Heating (Average) 4.56 4.18
Annual energy consumption QCE kWh/a 234 341
QHE (Average) 1,472 2,372
Sound power level Cooling HIGH dB (A) 60 65
Heating 61 65
- 3 - 1. Specifications
WALL MOUNTED ASHG18, 24KMTA WALL MOUNTED ASHG18, 24KMTA

2. Dimensions
2-1. Models: ASHG18KMTA and ASHG24KMTA
Unit: mm
980 240
280
Outline of indoor unit
for pipe inlet Ø65for pipe inlet Ø65
37 37
400 9041377
7341761 429
115
72
- 4 -
2-1. Models: ASHG18KMTA and ASHG24KMTA 2. Dimensions
WALL MOUNTED ASHG18, 24KMTA WALL MOUNTED ASHG18, 24KMTA

¢Installation space requirement
Provide sufficient installation space for product safety.
Unit: mm
Wall hook bracket
Outline of the indoor unit
50 or more
71 or more
40or more 70 or more
117 or more
1,500 or more
1,800 or more
160 or more
The flare connection
part should be installed
outdoors.
- 5 -
2-1. Models: ASHG18KMTA and ASHG24KMTA 2. Dimensions
WALL MOUNTED ASHG18, 24KMTA WALL MOUNTED ASHG18, 24KMTA

3. Wiring diagrams
3-1. Models: ASHG18KMTA and ASHG24KMTA
- 6 -
3-1. Models: ASHG18KMTA and ASHG24KMTA 3. Wiring diagrams
WALL MOUNTED ASHG18, 24KMTA WALL MOUNTED ASHG18, 24KMTA