Fujitsu GENERAL AGHG12KVCB User manual

AIR CONDITIONER
Floor type
SERVICE MANUAL
INDOOR
AGHG09KVCB
AGHG12KVCB
AGHG14KVCB
OUTDOOR
AOHG09KVCBN
AOHG12KVCBN
AOHG14KVCBN
SR_AG002EG_03
2020.11.25

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 © 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
2020.10.05
SR_CH01_AG002EG_01

CONTENTS
1. GENERAL INFORMATION
1. Specifications..............................................................................................01-1
1-1. Indoor unit ......................................................................................................................01-1
1-2. Outdoor unit....................................................................................................................01-3
2. Dimensions..................................................................................................01-4
2-1. Indoor unit ......................................................................................................................01-4
2-2. Outdoor unit....................................................................................................................01-6

1. Specifications
1-1. Indoor unit
Type Floor type
Inverter heat pump
Model name AGHG09KVCB AGHG12KVCB AGHG14KVCB
Power supply 230 V ~ 50 Hz
Available voltage range 198—264 V
Capacity
Cooling
Rated kW 2.50 3.50 4.20
Btu/h 8,500 11,900 14,300
Min.—Max. kW 0.9—4.3 0.9—4.3 0.9—5.2
Btu/h 3,100—14,700 3,100—14,700 3,100—17,700
Heating
Rated kW 3.50 4.50 5.20
Btu/h 11,900 15,400 17,700
Min.—Max. kW 0.9—5.5 0.9—6.2 0.9—6.3
Btu/h 3,100—18,800 3,100—21,200 3,100—21,500
Outdoor temp
-15°C kW 3.7 4.5 5.2
Input power
Cooling Rated
kW
0.51 0.83 1.06
Max. 1.65 2.11 2.11
Heating
Rated 0.81 1.1 1.41
Max. 1.65 1.98 1.98
Outdoor temp
-15°C 1.92 2.65 2.65
Current Cooling Rated A 2.3 3.7 4.7
Heating 3.6 4.9 6.2
EER Cooling kW/kW 4.95 4.20 3.95
COP Heating 4.32 4.10 3.70
Power factor Cooling %96.4 97.5 98.1
Heating 97.8 97.6 98.9
Moisture removal L/h (pints/h) 1.3 (2.3) 1.8 (3.2) 2.1 (3.7)
Maximum operating current *1 Cooling A9 11 11
Heating 10 12.5 12.5
Fan
Airflow rate
Cooling
HIGH
m3/h
570 570 650
MED 460 460 520
LOW 360 360 400
QUIET 270 270 270
Heating
HIGH 600 650 650
MED 480 480 520
LOW 370 370 390
QUIET 270 270 270
Type × Q'ty Cross flow fan × 2
Motor output W 16 × 2
Sound pressure level *2
Cooling
HIGH
dB (A)
40 40 44
MED 35 35 38
LOW 29 29 31
QUIET 22 22 22
Heating
HIGH 41 43 43
MED 35 35 37
LOW 29 29 29
QUIET 22 22 22
Heat exchanger type
Dimensions (H × W × D) mm 378 × 550 × 26.6
Fin pitch 1.2
Rows × Stages 2 × 18
Pipe type Copper tube
Fin type Aluminium
Enclosure Material Polystyrene
Color White
Dimensions
(H × W × D)
Net mm 600 × 740 × 200
Gross 700 × 820 × 310
Weight Net kg 14
Gross 18
Connection pipe Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 9.52 (Ø 3/8)
Method Flare
Drain hose Material PP + LLDPE
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 30 or less
Remote controller type Wireless (Wired, Mobile app*3 [FGLair™] [option])
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 current is maximum value when operated within the operation range.
• *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

Model name AGHG09KVCB AGHG12KVCB AGHG14KVCB
Energy efficiency class Cooling A+++ A+++ A++
Heating (Average) A+ A+ A+
Pdesign Cooling kW 2.5 (35 °C) 3.5 (35 °C) 4.2 (35 °C)
Heating (Average) 3.0 (-10 °C) 3.6 (-10 °C) 4.2 (-10 °C)
SEER Cooling kWh/kWh 8.60 8.50 8.10
SCOP Heating (Average) 4.40 4.20 4.00
Annual energy consumption QCE kWh/a 102 144 181
QHE (Average) 953 1,198 1,467
Sound power level Cooling High dB (A) 53 53 57
Heating 53 55 55
1-1. Indoor unit - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name AOHG09KVCBN AOHG12KVCBN AOHG14KVCBN
Power supply 230 V ~ 50 Hz
Available voltage range 198—264 V
Starting current A 3.6 4.9 6.2
Fan
Airflow rate Cooling m3/h 1,550 1,830 2,210
Heating 1,690 2,100 2,100
Type × Q'ty Propeller × 1
Motor output W 49
Sound pressure level *1 Cooling dB (A) 40 44 51
Heating 46 52 50
Sound power level Cooling dB (A) 54 58 63
Heating 58 62 63
Heat exchanger type
Dimensions
(H × W × D) mm
Main1: 588 × 881 × 18.19
Main2: 588 × 851 × 18.19
Fin pitch 1.3
Rows × Stages 2 × 28
Pipe type Copper
Fin type Type (Material) Aluminium
Surface treatment PC Fin
Compressor Type × Q'ty DC TWIN ROTARY
Motor output W 810 925
Refrigerant Type (Global warming potential) R32 (675)
Charge g 940
Refrigerant oil Type FW68S RmM68AF
Amount cm3350 400
Enclosure
Material Steel sheet
Color BEIGE
Dimensions
(H × W × D)
Net mm 632 × 799 × 290
Gross 692 × 940 × 375
Weight Net kg 36 38
Gross 40 42
Connection pipe
Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 9.52 (Ø 3/8)
Method Flare
Pre-charge length
m
15
Max.length 20
Max. height difference 15
Operation range Cooling °C -10 to 46
Heating -25 to 24
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.
• 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 - (01-3) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB
600
200
Side view
Front view
740
Unit: mm
Installation space
100 or more
80 or more
80 or more
150 or below from the floor
50 or more
2-1. Indoor unit - (01-4) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

Grating
PROHIBITED
WARNING
• The appliance shall be installed, operated and stored in a room with a floor area larger than X
m2.
Amount of refrigerant charge
M (kg)
Minimum room area
X (m2)
M ≤ 1.22 -
1.22 < M ≤ 1.23 12.99
1.23 < M ≤ 1.50 19.31
1.50 < M ≤ 1.75 26.28
1.75 < M ≤ 2.0 34.33
2.0 < M ≤ 2.5 53.63
2.5 < M ≤ 3.0 77.23
3.0 < M ≤ 3.5 105.12
3.5 < M ≤ 4.0 137.29
(IEC 60335-2-40)
2-1. Indoor unit - (01-5) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢Models: AOHG09KVCBN, AOHG12KVCBN, and AOHG14KVCBN
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 - (01-6) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2020.11.25
SR_CH02_AG002EG_02

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Indoor unit parts list....................................................................................02-2
2-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB ......................................02-2
3. Outdoor unit parts list.................................................................................02-8
3-1. Models: AOHG09KVCBN, AOHG12KVCBN, and AOHG14KVCBN ..............................02-8
4. Accessories ...............................................................................................02-12
4-1. Indoor unit ....................................................................................................................02-12
4-2. Outdoor unit..................................................................................................................02-13
5. Optional parts ...........................................................................................02-14
5-1. Indoor unit ....................................................................................................................02-14
6. Refrigerant system diagrams...................................................................02-16
6-1. Model: AOHG09KVCBN...............................................................................................02-16
6-2. Models: AOHG12KVCBN and AOHG14KVCBN ..........................................................02-17
7. Wiring diagrams ........................................................................................02-18
7-1. Indoor unit ....................................................................................................................02-18
7-2. Outdoor unit..................................................................................................................02-19
8. PC board diagrams ...................................................................................02-20
8-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB ....................................02-20
8-2. Models: AOHG09KVCBN, AOHG12KVCBN, and AOHG14KVCBN ............................02-21

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.
– 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: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB
¢Exterior parts and chassis
25
1
5
2
7
3
4
4
6
24
6
20
23
26
20
18
h
f
a
b
c
g
19
e
17
21
d
11
9
8
16
10
12
13
14
12
15
22
2-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB - (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 9316193024 Base ♦
2 9316197015 Base cover A ♦
3 9316373013 Base cover B ♦
4 9316405011 Base bracket ♦
5 9316272019 Bracket panel ♦
6 9306628024 Bearing C assy ♦
7 9900720087 Terminal (3P) ♦
8 9316186019 Front panel R ♦
9 9316415171 Front panel total assy ♦
10 9316189027 Air filter ♦
11 9316418066 Intake grille assy ♦
12 9316458017 Rope assy ♦
13 9316474017 Air clean filter assy ♦
14 9318912005 Remote controller holder ♦
15 9332438871 Remote controller ♦
16 9316187016 Front panel L ♦
17 9900991005 Pipe thermistor ♦
18 9316091269 Evaporator total assy ♦
19 9316192027 Thermistor holder ♦
20 9316195011 Motor holder ♦
21 9602851003 Fan motor (MFD-14SXN) ♦
22 9316309012 Crossflow fan B assy ♦
23 9602850006 Fan motor (MFD-14TXN) ♦
24 9312004034 Crossflow fan assy ♦
25 9900975067 Room thermistor ♦
26
9711694034 Main PCB (09 model) ♦
9711694041 Main PCB (12 model) ♦
9711694058 Main PCB (14 model) ♦
a— Terminal bracket —
b— Cable bracket —
c— Terminal cover —
d— Front panel —
e— Terminal bracket (COM) —
f— Control box shield —
g— Control box cover —
h— Control box —
2-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB - (02-3) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Casing
64
65
63
63 58
59
66
51
69
a
b
60
61
62
d
e
c
68
67
54
54
50
54
53
56
57
55
52
52
56
56
2-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB - (02-4) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

Item no. Part no. Part name Service part
50 9316411012 Casing assy ♦
51 9316207011 Top cover ♦
52 9315281012 Spacer C ♦
53 9316209015 Joint U ♦
54 9316210011 Guard holder ♦
55 9315282019 Spacer D ♦
56 9316208018 L and R louver U ♦
57 9316211018 Fan guard ♦
58 9316310018 Casing cover L and R ♦
59 9303529010 Bushing B ♦
60 9316308015 Casing cover F ♦
61 9316206014 Louver Z ♦
62 9316205017 Louver U ♦
63 9303529010 Bushing A ♦
64 9316213012 Gear case ♦
65 9309994003 Gear A ♦
66 9316273016 Casing cover B ♦
67 9711714008 Display assy ♦
68 9711696007 Indicator PCB ♦
— 9707580020 Wire with connector
(P1002 on Indicator PCB—P360 on Main PCB) ♦
— 9707581010 Wire with connector (White)
(P1001 on Indicator PCB—P1000 on Indicator PCB) ♦
69 9900384043 Step motor (Up/Down) ♦
a— Casing —
b— Casing reinforcement —
c— Display cover —
d— Display case —
e— Switch cover —
2-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB - (02-5) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

¢Drain pan
a
b
118
116
119
120
109
107
106
104
112
111
112
112
114
114
114
113
117
111
110
115
115
102
124
103
100
108
105
101
122
123
121
2-1. Models: AGHG09KVCB, AGHG12KVCB, and AGHG14KVCB - (02-6) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST