Fujitsu Inverter Split Type Air Conditioner (50Hz) - Duct Type Service Manual
Model Information
This service manual covers the following Fujitsu Inverter Split Type Air Conditioner models:
Indoor Units:
- ARYF12LALU
- ARYF14LALU
- ARYF18LALU
- ARYF18LBLU
Outdoor Units:
- AOYA12LACL
- AOYA12LALL
- AOYB12LACL
- AOYB12LALL
- AOYA14LACL
- AOYA14LALL
- AOYB14LACL
- AOYB14LALL
- AOYA18LACL
- AOYA18LALL
- AOYB18LACL
- AOYB18LALL
Contents
- Specifications
- Dimensions
- Refrigerant System Diagram
- Circuit Diagram
- Indoor PCB Circuit Diagram
- Outdoor PCB Circuit Diagram
- Error Contents
- Parts (Indoor Unit)
- Parts (Outdoor Unit)
- Accessories
Specifications
Electrical Data
| Type | Indoor Unit | Outdoor Unit | Indoor Unit | Outdoor Unit | Indoor Unit | Outdoor Unit |
|---|---|---|---|---|---|---|
| ARYF12LALU | AOYA12LA, AOYB12LA | ARYF14LALU | AOYA14LA, AOYB14LA | ARYF18L_LU | AOYA18LA, AOYB18LA | |
| Cooling Capacity | 3.50 kW | - | 4.30 kW | - | 5.20 kW | - |
| Heating Capacity | 4.10 kW | - | 5.00 kW | - | 6.00 kW | - |
| Power Source | 230 V | 230 V | 230 V | 230 V | 230 V | 230 V |
| Frequency | 50 Hz | 50 Hz | 50 Hz | 50 Hz | 50 Hz | 50 Hz |
| Running Current | Cooling: 4.6 A | Cooling: 5.8 A | Cooling: 4.9 A | Cooling: 6.2 A | Cooling: 7.1 A | Cooling: 7.4 A |
| Heating: 4.9 A | Heating: 5.9 A | Heating: 5.1 A | Heating: 6.2 A | Heating: 7.3 A | Heating: 7.7 A | |
| Input Watts | Cooling: 1.05 kW | Cooling: 1.33 kW | Cooling: 1.11 kW | Cooling: 1.41 kW | Cooling: 1.62 kW | Cooling: 1.70 kW |
| Heating: 1.11 kW | Heating: 1.34 kW | Heating: 1.17 kW | Heating: 1.42 kW | Heating: 1.66 kW | Heating: 1.75 kW | |
| E.E.R. | Cooling: 3.33 kW/kW | Cooling: 3.21 kW/kW | Cooling: 3.15 kW/kW | Cooling: 3.05 kW/kW | Cooling: 3.21 kW/kW | Cooling: 3.06 kW/kW |
| Heating: 3.69 kW/kW | Heating: 3.71 kW/kW | Heating: 3.50 kW/kW | Heating: 3.52 kW/kW | Heating: 3.61 kW/kW | Heating: 3.43 kW/kW | |
| Starting Current | 4.9 A | 5.9 A | 5.9 A | - | 7.7 A | - |
| Moisture Removal | 1.3 L/hr | 1.5 L/hr | 2.0 L/hr | - | - | - |
| Maximum Current | 10.0 A | 12.5 A | 12.5 A | - | - | - |
Note: The above list shows values at the external static pressure of 0Pa, setting the fan speed high notch (indoor unit).
Fan Speed
| Discrimination | MFH-24RVL | MFH-24RVL | MFH-24RVL | |
|---|---|---|---|---|
| Indoor Unit | High | 880 r.p.m. | 1,040 r.p.m. | 1,040 r.p.m. |
| Med | 780 r.p.m. | 950 r.p.m. | 950 r.p.m. | |
| Low | 720 r.p.m. | 840 r.p.m. | 840 r.p.m. | |
| Quiet | 620 r.p.m. | 740 r.p.m. | 740 r.p.m. | |
| Outdoor Unit | Cooling | 770 r.p.m. | 820 r.p.m. | 860 r.p.m. |
| Heating | 700 r.p.m. | 750 r.p.m. | 820 r.p.m. |
Note: The above list shows values at the external static pressure of 0Pa, setting the fan speed high notch (indoor unit).
Air Flow
| Indoor Unit | Indoor Unit | Indoor Unit | ||
|---|---|---|---|---|
| Indoor Unit | High | 720 m³/h | 870 m³/h | 820 m³/h |
| Med | 630 m³/h | 770 m³/h | 720 m³/h | |
| Low | 560 m³/h | 670 m³/h | 610 m³/h | |
| Quiet | 480 m³/h | 580 m³/h | 550 m³/h | |
| Outdoor Unit | Cooling | 1,780 m³/h | 1,910 m³/h | 2,000 m³/h |
| Heating | 1,630 m³/h | 1,740 m³/h | 1,910 m³/h |
Note: The above list shows values at the external static pressure of 0Pa, setting the fan speed high notch (indoor unit).
Noise Level
| Indoor Unit | Indoor Unit | Indoor Unit | ||
|---|---|---|---|---|
| Indoor Unit | High speed | 32 dB | 33 dB | 33 dB |
| Med speed | 30 dB | 31 dB | 31 dB | |
| Low speed | 28 dB | 29 dB | 29 dB | |
| Quiet | 26 dB | 27 dB | 27 dB | |
| Outdoor Unit | Cooling | 47 dB | 49 dB | 50 dB |
| Heating | 48 dB | 49 dB | 50 dB |
Note: Static pressure: 0Pa. Duct length: Inlet 1m, Outlet 2m (indoor unit).
Measurement
| Indoor unit | Outdoor unit | ||
|---|---|---|---|
| Dimensions (H x W x D) | Indoor unit | 217 x 953 x 595 mm | - |
| Outdoor unit | - | 578 x 790 x 300 mm | |
| Weight | Indoor unit | 27 kg / 23 kg | - |
| Gross / Net Outdoor unit | - | 44 kg / 40 kg |
Compressor and Refrigerant
| ARYF12LALU / AOYA12LA_L | ARYF14LALU / AOYA14LA_L | ARYF18LALU / AOYA18LA_L | |||
|---|---|---|---|---|---|
| Compressor Type | Hermetic type, 4 poles, DC motor, Twin Rotary | ||||
| Discrimination | DA130AIF-25NA | ||||
| Weight (with oil) | 9.6 kg | ||||
| Refrigerant Type | R410A | ||||
| Standard Refrigerant | Pipe Length | 15 m | 1,150 g | 1,250 g | 1,250 g |
| Pipe Length | 20 m | 1,250 g | 1,350 g | 1,350 g | |
| Full Charge | 25 m | 1,350 g | 1,450 g | 1,450 g | |
| Additional Charge | 20 g/m | 20 g/m | 20 g/m | ||
| Maximum Pipe Height | 15 m | ||||
Dimensions
Indoor Unit
Unit: mm
Top View: 886 mm width, 850 mm mounting width, 390 mm height.
Side View: 953 mm width, 920 mm mounting width, 600 mm depth, 150 mm height.
Front View: 605 mm depth, 575 mm mounting depth, 20 mm clearance, 217 mm height.
Drain pipe diameters: Inside: 21.5 mm, Outside: 26.0 mm.
Outdoor Unit
Unit: mm
Top View: 790 mm width.
Front View: 578 mm height, 790 mm width, 66 mm clearance, 10 mm clearance.
Side View: 300 mm depth, 347 mm width.
Bottom View: 540 mm air flow width, 320 mm depth, Drain pipe mounting place (Ø20), 4-Ø10mm hole.
Detail View: 177 mm, 189 mm, 121 mm, 184 mm.
Refrigerant System Diagram
The diagram illustrates the flow of refrigerant within the outdoor and indoor units. Key components include the compressor, accumulator, expansion valve, strainers, mufflers, and heat exchangers. Thermistor locations are indicated with labels such as THC (Compressor), THO (Discharge), THHM (Heat Exchanger Med), TH HO (Heat Exchanger Out), TH (Outdoor Air), THP (Pipe), and THR (Room).
Refrigerant Pipe Diameters:
- ARYF12LALU / AOYA12LA_L: Liquid: 1/4" (6.35 mm), Gas: 3/8" (9.52 mm)
- ARYF14LALU / AOYA14LA_L & ARYF18LALU / AOYA18LA_L: Liquid: 1/4" (6.35 mm), Gas: 1/2" (12.70 mm)
Circuit Diagram
Detailed circuit diagrams are provided for both the indoor and outdoor units, illustrating the connections between the controller PCB assembly, power supply PCB assembly, fan motor, thermistors, compressor, 4-way valve, expansion valve, and power source.
Indoor PCB Circuit Diagram
This section details the circuit board layout and connections for the indoor unit's control and power supply systems. It includes specific model numbers for control units and PCB assemblies.
Outdoor PCB Circuit Diagram
This section provides the circuit diagram for the outdoor unit's inverter assembly and controller PCB. It lists various model numbers for the inverter assembly and controller PCB.
Error Contents
Indoor Unit Error Codes
| Code | Error Contents |
|---|---|
| 01 | Indoor signal error |
| 13 | Indoor signal error |
| 26 | Indoor signal error |
| 27 | Indoor signal error |
| 00 | Wired remote controller abnormal |
| 02 | Indoor room temperature sensor error |
| 04 | Indoor heat exchanger temperature sensor (middle) error |
| 28 | Indoor heat exchanger temperature sensor (inlet) error |
| 09 | Float switch operated |
| 0C | Outdoor discharge pipe temperature sensor error |
| 06 | Outdoor heat exchanger temperature sensor (outlet) error |
| 0A | Outdoor temperature sensor error |
| 15 | Compressor temperature sensor error |
| 1d | 2-way valve temperature sensor error |
| 1E | 3-way valve temperature sensor error |
| 29 | Outdoor heat exchanger temperature sensor (middle) error |
| 20 | Indoor manual auto switch abnormal |
| 2A | Power supply frequency detection error |
| 17 | IPM protection |
| 18 | CT error |
| 1A | Compressor location error |
| 1b | Outdoor fan error |
| 1F | Connected indoor unit abnormal |
| 1c | Outdoor unit computer communication error |
| 12 | Indoor fan abnormal |
| 0F | Discharge temperature error |
| 24 | Excessive high pressure protection on cooling |
| 2c | 4-way valve abnormal |
| 16 | Pressure switch abnormal |
| 2b | Compressor temperature error |
| 19 | Active filter abnormal |
| 25 | PFC circuit error |
| CO 1d | Incompatible indoor unit is connected |
| CO 1c | Communication error between indoor unit and remote control |
Outdoor Unit Error Codes
| Error Contents | LED |
|---|---|
| Thermistor malfunction | on 0.1 sec / off 0.1 sec |
| Abnormal discharge temperature | on |
| Current surge protection | on 0.5 sec / off 0.5 sec |
| CT abnormality | on 2.0 sec / off 2.0 sec |
| Compressor position detection malfunction | on 0.1 sec / off 2.0 sec |
| Fan malfunction | on 5.0 sec / off 5.0 sec |
| PAM voltage abnormality | on 5.0 sec / off 0.1 sec |
| Timer short | on 1.0 sec / off 0.1 sec |
| Compressor temperature protection (permanent stop) | on 2.0 sec / off 5.0 sec |
| PFC surge protection (permanent stop) | on 5.0 sec / off 2.0 sec |
Parts
Indoor Unit Parts
Exploded views and part numbers are provided for various indoor unit components, including filters, panels, evaporator assembly, drain pan, thermistors, pipe covers, hooks, and cabinet covers.
Outdoor Unit Parts
Exploded views and part numbers are provided for various outdoor unit components, including top panel, cover, cabinet, grille, fan ring, grip, emblem, protective net, valves, motors, compressor, and thermistors.
Accessories
Indoor Unit Accessories
The following accessories are available for the indoor unit:
- Installation template
- Hanger
- Screw (M4 x 10)
- Special nut A (large flange)
- Special nut B (small flange)
- Binder
- Remote control
- Remote control cord
- Screw (M4 x 16)
Outdoor Unit Accessories
- Drain pipe
- Adapter assy (12.7 mm to 9.52 mm)
Optional Parts
The following optional parts are available:
- Remote sensor: UTD-RS100
- External control set: UTD-ECS5A
- Drain pump unit: UTZ-PX1BBA
- Receiver unit: UTY-LRHX1
