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Fujitsu Split Type Room Air Conditioner Service Manual

Model: ASYA18LEC (Indoor Unit) / AOYR18LEC (Outdoor Unit)

Contents

Specifications

Electrical Data

ItemIndoor Unit (ASYA18LEC)Outdoor Unit (AOYR18LEC)
Power Source230 V
Frequency50 Hz
Cooling Capacity5.20 kW
Heating Capacity6.30 kW
Running Current (Cool)6.8 A
Running Current (Heat)7.6 A
Input Watts (Cooling)1.52 kW
Input Watts (Heating)1.71 kW
E.E.R. (Cooling)3.42 kW/kW
C.O.P. (Heating)3.68 kW/kW
Maximum Current (Cool)9.0 A
Maximum Current (Heat)12.5 A
Moisture Removal2.8 L/hr
Air Circulation (High)900 m³/hr

Fan Motor

UnitSpeedRPM
Indoor UnitHigh1,220
Middle1,020
Low900
Quiet710
Outdoor Unit1,050

Noise Level

UnitConditionNoise Level
Indoor UnitHigh43 dB / 42 dB
Middle37 dB / 37 dB
Low33 dB / 33 dB
Quiet26 dB / 25 dB
Outdoor Unit(Cool / Heat)50 dB / 52 dB

Compressor and Refrigerant

ItemDetails
TypeHermetic type, 4 pole, Scroll, DC inverter motor
Discrimination808 903 80
Weight (with oil)9.0 kg
Refrigerant TypeR410A
Precharged Refrigerant1,200 g
Pipe Length15 m (1,200 g), 20 m (1,300 g), 25 m (1,400 g)
Full Charge
Additional Charge20 g/m
Max Height20 m

Dimensions (Unit: mm)

Indoor Unit

Dimensions: 320 (H) x 998 (W) x 228 (D)

Weight: 18 kg (Gross) / 14 kg (Net)

Outdoor Unit

Dimensions: 620 (H) x 790 (W) x 298 (D)

Weight: 45 kg (Gross) / 40 kg (Net)

Refrigerant System Diagram

The diagram illustrates the flow of refrigerant through the compressor, sub-accumulator, mufflers, 4-way valve, 3-way valve, heat exchangers (indoor and outdoor units), 2-way valves, and strainers. Arrows indicate the direction of refrigerant flow for cooling and heating modes.

Refrigerant Pipe Diameter:

Circuit Diagram

The circuit diagram details the electrical connections for both the indoor and outdoor units, including the controller PCB assembly, fan motor, step motors, thermistors, reactors, compressor, expansion valve, and 4-way valve. It also shows terminal connections and power source inputs.

Indoor PCB Circuit Diagram

This section provides a detailed schematic of the Indoor Unit's Controller PCB Assembly (Main PCB) and Indicator PCB Assembly. It shows connections for the remote control, step motors (louver, diffuser), fan motor, thermistors (pipe, room), and various control unit components.

Outdoor PCB Circuit Diagram

This section outlines the circuit diagram for the Outdoor Unit, including the Inverter Assembly and Controller PCB Assembly. It details connections for the power source, terminal board, EMI filter, reactor, compressor, expansion valve, 4-way valve, DC fan motor, and thermistors.

Error Contents

This section lists various error codes indicated by the operation and timer LEDs, along with their descriptions. Errors include serial signal issues, thermistor errors (indoor and outdoor units), control errors, fan motor errors, and refrigerant cycle errors.

ErrorOperation LEDTimer LEDError Description
Serial signal errorOff2 flashSerial signal (reverse) error, at operation start up
3 flashSerial signal (reverse) error, during operation
4 flashSerial signal (forward) error, at operation start up
5 flashSerial signal (forward) error, during operation
8 flashWired remote controller error
Indoor unit thermistor error2 flashIndoor temperature thermistor open / short
2 flashHeat exchanger middle thermistor open / short
Outdoor unit thermistor error3 flashDischarge thermistor open / short
3 flashHeat exchanger thermistor open
4 flashOutdoor temperature thermistor open / short
8 flashCompressor temperature thermistor open / short
Indoor unit control error2 flashForced automatic SW welded
3 flashMain relay welded
4 flashPower interruption error
7 flashVDD permanent stop protection
8 flashreverse VDD permanent stop protection
Outdoor unit control error2 flashCurrent trip error
3 flashCT abnormal
5 flashCompressor location detection error
6 flashOutdoor unit fan drive system abnormal
Indoor fan motor error2 flashAbnormal lock
6 flashAbnormal rotation
Refrigerant cycle error2 flashDischarge Temperature abnormal
3 flashCooling high pressure abnormal rise
5 flashPressure switch trouble
Optional function error2 flashActive filter voltage trouble (second time)
8 flashActive filter voltage trouble (first time)
4 flashPFC circuit error
Model information error0.1 sec on/off0.1 sec on/offModel information error

Outdoor Unit Error Codes

LEDError
0.5 second on / 0.5 second offOverload protection
onDischarge temperature abnormal
0.1 second on / 0.1 second offThermistor abnormal
2.0 second on / 2.0 second offCT abnormal
0.1 second on / 2.0 second offCompressor location abnormal
5.0 second on / 5.0 second offFan abnormal

Parts - Indoor Unit

This section lists the part numbers for various components of the indoor unit, including the front panel, intake grille, air filter, clamper grille, receiver window, room thermistor holder, air clean filter assembly, remote control, and remote control holder.

Component List 1:

RefDescriptionPart number
1Front Panel Total Assy9315335012
2Front Panel9314991011
3Intake Grille Assy9315336019
4Air Filter9315014016
5Clamper Grille9306755010
6Receiver Window9315010018
7Room Thermistor Holder9315252012
Air Clean Filter Assy9315212016
Remote Control9317445009
Remote Control Holder9305642045

Component List 2:

RefDescriptionPart number
11Casing Assy9315331038
12Casing Cover B9315016010
13Casing Cover L9315017017
14Casing Cover R9315018014
15Casing Cover F9315019011
16Drain Cap9367677009
17Drain Hose Assy9315769015
18Bush B9312156016
19Spacer B9312441013
20R and L Louver9311997016
21Louver U9315000019
22Louver Z9315001016
23Diffuser U9315002013
24Diffuser Z9315003010
25Spring C9314142017
Fan Guard9305751051
Fan Guard Holder R9315814012
Fan Guard Holder L9315815019

Component List 3:

RefDescriptionPart number
31Crossflow Fan Assy9315024015
32Bearing C Assy9306628017
33Evaporator Total Assy9315338075
34Connection Pipe Assy9315354020
35Water Seal9315251015
36Evaporater Holder L9314995019
37Evaporater Holder R9314994012
38Rear Bracket9315022011
39Filter Guide9315013019
40Filter Guard9315411013

Component List 4:

RefDescriptionPart number
41Controller PCB Assy9707090451
42Control Box9314996016
43Control Cover9314997013
44Motor Case9314998010
45Terminal Earth9315028013
46DC Brushless Motor9602784004
47Motor, Step9900384029
48Motor, Step9900384036
49Motor, Step9900139063
50Terminal9900447014
51Indicator PCB Assy9707210019
-Pipe Thermistor9900389017

Note: Room thermistor is tied to a Controller PCB assy.

Parts - Outdoor Unit

This section lists the part numbers for various components of the outdoor unit, including the top panel, front panel, emblem rear, switch cover, protective net, motor bracket, DC brushless motor, propeller fan, condenser assembly, separate wall assembly, base assembly, and cabinet components.

Component List 1:

RefDescriptionParts number
1Top Panel Assy9313988081
2Front Panel Assy9316046016
3Emblem Rear9315210012
4Switch Cover9315891020
5Protective Net9331640008
6Motor Bracket9315894014
7DC Brushless Motor9602724017
8Propeller Fan9313808013
9Condenser Assy9317119009
10Separate Wall Assy9331722001
11Base Assy9316885004
12Cabinet Right Assy9316044029
13Cabinet Left Assy9316042018
Drain Pipe9303029022

Component List 2:

RefDescriptionParts number
21Bracket Valve9331649001
22Bracket Valve Cover9331683005
232-Way Valve Assy9314554018
243-Way Valve Assy9316388017
25Muffler9316276017
26Compressor Assy9313279011
27Rubber Cushion9306410001
28Entrance Pipe Assy9317121019
29Expansion Valve Coil9900057039
30Pulse Motor Valve Assy9314557019
31Pipe (Cond Exit) Assy9317105002
324-Way Valve9900162016
33Strainer C9311440017
Solenoid9970055010
Pipe (Cond Sepa) Assy9317127004
Discharge Pipe Assy9331772006
Joint Pipe (Cond)9331780018
Suction Pipe Assy9331775007
Joint Pipe (3WV) Assy9331777001
Reactor Assy9900354022

Component List 3:

RefDescriptionParts number
41Inverter Case Assy9315690029
42Inverter Case Cover9314507038
43PCB Holder9313074029
44PCB Assy9707427172
45Fuse Holder0501454012
46Fuse Holder0501456016
47Fuse0600382018
48Fuse0600376086
49Bracket Terminal9315233035
50Terminal9703874031
Terminal Cover9331704007
Thermistor Assy9900148041
Outdoor Thermistor9900210038

Accessories

Name and ShapePart number
Wall hook bracket9315023018
Remote control9317445009
Remote control holder9305642045
Battery (penlight)0600185527
Cloth tape9310519004
Tapping screw (big)0700076046
Tapping screw (small)0700019036
Air cleaning filter9312153060
Air cleaning filter frame9311925071
9368568009
Drain pipe9303029022
Models: ASYA18LEC, AOYR18LEC, ASYA18LEC Split Type Room Air Conditioner, ASYA18LEC, Split Type Room Air Conditioner, Air Conditioner, Conditioner

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