Fujitsu ASU18RLF Service Manual
Wall mounted type
for extra low temp. district
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Also See for ASU18RLF:
- Service instructions manual (100 pages) ,
- Design & technical manual (51 pages) ,
- Service manual (21 pages)
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WALL MOUNTED TYPE
ROOM AIR CONDITIONER
FOR EXTRA LOW TEMP. DISTRICT
Indoor unit
ASU18RLF
ASU24RLF
CO NT E NT S
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . .
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . .
REFRIGERANT SYSTEM DIAGRAM . . . . .
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . .
PCB CIRCUIT DIAGRAM . . . . . . . . . . . . . .
ERROR DERECTION . . . . . . . . . . . . . . . . .
PARTS (INDOOR UNIT) . . . . . . . . . . . . . . .
PARTS (OUTDOOR UNIT) . . . . . . . . . . . .
ACCESSORIES . . . . . . . . . . . . . . . . . . . . .
Outdoor unit
AOU18RLXFWH
AOU24RLXFWH
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Table of Contents
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Summary of Contents for Fujitsu ASU18RLF
- Page 1 WALL MOUNTED TYPE ROOM AIR CONDITIONER FOR EXTRA LOW TEMP. DISTRICT Indoor unit Outdoor unit ASU18RLF AOU18RLXFWH ASU24RLF AOU24RLXFWH CO NT E NT S SPECIFICATIONS ....
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Page 2: Specifications
49 dB IU Discrimination MFD-50RON Type Extra low temp. heating OU Discrimination MFE-60TVT Medium 37 dB 42 dB Indoor unit ASU24RLF ASU18RLF Indoor unit Cooling 37 dB High 1,260 rpm 1,480 rpm 33 dB Outdoor unit AOU18RLXFWH AOU24RLXFWH Medium 1,020 rpm... -
Page 3: Indoor Unit
D IMENS IO NS INDOOR UNIT Unit : inch (mm) 12-5/8" (320) 39-1/4" (998) 9" (228) Drain pipe diameter Inside : 5/8 inch (16 mm) Outside : 1-3/32 inch (28 mm) Liquid pipe diameter : 3/8 inch (9.52 mm) Gas pipe diameter : 5/8 inch (15.88 mm) 2010.02.26... -
Page 4: Outdoor Unit
1/2" (12) 35-1/2" (900) 13" (330) 3"(77) OUTDOOR UNIT 1-1/4" Unit : inch (mm) (31) 15-3/4" (400) 25-5/8" (650) 2010.02.26... -
Page 5: Refrigerant System Diagram
R EFRIG ERANT S YSTEM DI AG RAM Heat exchanger ( INDOOR ) 3-Way valve (Large) 3-Way valve Muffler (Small) Pressure Strainer switch Expansion valve 4-Way valve Heat exchanger Strainer ( OUTDOOR ) Cooling flow Heating flow Refrigerant pipe diameter Liquid : 3/8"... -
Page 6: Circuit Diagram
C IRC U I T DI AG RAM INDOOR UNIT OUTDOOR UNIT Thermostat ( 55 [ 131 F ] ) Heater High pressure switch Black CN90 CN112 White White Test Thermistor ( Compressor temp. ) Fuse 5A 250V Brown CN64 Ex. -
Page 7: Pcb Circuit Diagram
PC B C IR C U IT DI AGR AM CONTROL UNIT ASU18RLF : EZ-0090DHSE ASU24RLF : EZ-0104HSE TERMINAL L I N HP-T3064A-A29-L1 DC5V 22007 UL1015 AWG24 BLACK BLACK N I N TO OUTDOOR UNIT UL1015 AWG24 WHITE 22007 UL1015 AWG24... - Page 8 INVERTER ASSEMBLY AOU18RLXFWH : EZ-0150THUE TRANSISTOR PCB AOU24RLXFWH : EZ-0150WHUE ( I P M ) EMI FILTER ZCAT2132-1130 AOU18RLXFWH : K07BT-0905HUE-TR0 UL1015 AOU24RLXFWH : K07BT-0906HUE-TR0 AWG14 WHITE EMI FILTER UL1015 UL1015 POWER SOURCE ZCAT2132-1130 AWG14 AWG14 AC208 - 230V BLACK BLACK UL1015 60Hz...
- Page 9 Error display Wired remote OPERATION TIMER ECONOMY control lamp lamp lamp Error code (green) (orange) (green) • When the indoor unit cannot receive the signal from the branch unit Communication Serial communication error • When the branch unit cannot receive the signal from the indoor unit Remote control Communication E R R O R D E TE CT ION...
- Page 10 P ARTS INDOOR UNIT ASU18RLF ASU24RLF Description Parts number Remote Control 9379219013 Remote Control Holder 9305642045 Bracket Panel 9315023018 Air Clean Filter Assy 9315212016 Screw Cap 9309002074 Wire Clamper 9315015013 2016.01.07...
- Page 11 Description Parts number Front Panel 9314991080 Intake Grille Assy 9315336163 Air Filter 9315014023 Receiver Window 9315010018 Grille Clamper 9306755010 INDOOR UNIT ASU18RLF ASU24RLF 2016.01.07...
- Page 12 INDOOR UNIT ASU18RLF ASU24RLF Description Parts number Control Cover 9314997020 Control Box 9314996023 Main PCB (ASU18RLF) 9708540368 Main PCB (ASU24RLF) 9708540375 Terminal 9900447014 Display Case 9314999024 Indicator PCB 9707210057 Room Thermistor Holder 9315252012 2016.01.06...
- Page 13 INDOOR UNIT ASU18RLF ASU24RLF Description Parts number Motor Case 9314998027 Bush B 9312156016 Motor Step (Red) 9900384029 Motor Step (Green) 9900384036 Motor Step (Blue) 9900139063 Gear A 9309994003 Link Holder 9315007018 Link A 9315008015 Joint A 9315005014 Motor Clamper 9315012012...
- Page 14 INDOOR UNIT ASU18RLF ASU24RLF Description Parts number Crossflow Fan Assy 9315024015 Bearing C Assy 9306628017 Evaporator Total Assy (18) 9315338181 Evaporator Total Assy (24) 9315338174 Pipe Thermistor 9900551018 Casing Assy 9315331045 2016.01.06...
- Page 15 INDOOR UNIT ASU18RLF ASU24RLF Casing assy Description Parts number Casing 9314993015 Casing Cover R 9315018014 Casing Cover B 9315016010 Casing Cover L 9315017017 Casing Cover F 9315019011 Drain Cap 9367677009 Drain Hose Assy 9315769015 Louver U (Upper) 9315000026 Louver Z (Lower)
- Page 16 PA R TS OUTDOOR UNIT AOU18RLXFWH AOU24RLXFWH Ref. Description Part number Protective Net 9375381011 Thermo Holder 9375211011 Top Panel Sub Assy 9374417032 Front Panel Sub Assy 9374414079 Service Panel Sub Assy 9374415052 Emblem Rear 9351355005 Right Panel Sub Assy 9374416134 Valve Cover 9374174010 2016.03.08...
- Page 17 OUTDOOR UNIT AOU18RLXFWH AOU24RLXFWH Ref. Description Part number Propeller Fan Assy 9366378020 Fan Motor 9602843015 Terminal 9900203023 Filter PCB (AOU18RLXFWH) 9708513065 Filter PCB (AOU24RLXFWH) 9708513072 Main PCB (AOU18RLXFWH) 9708511764 Cover plate Main PCB (AOU24RLXFWH) 9708511771 Heater Unit Assy 9900888015 2016.03.08...
- Page 18 OUTDOOR UNIT AOU18RLXFWH AOU24RLXFWH Ref. Description Part number Discharge Thermistor 9900461003 Outdoor Thermistor 9900463007 Compressor Thermistor 9900466015 Heat Exchanger Thermistor 9900514013 PTC Thermistor (AOU24) 9704265012 Capacitor PCB (AOU18) 9709894033 Capacitor PCB (AOU24) 9709894040 Choke Coil 9900223014 Transistor PCB (AOU18) 9708512174 Transistor PCB (AOU24) 9708512181 ACTPM...
- Page 19 OUTDOOR UNIT AOU18RLXFWH AOU24RLXFWH Ref. Description Part number Condenser A Sub Assy 9374420308 Expansion Valve Coil 9970095030 Expansion Valve Assy 9370947144 3-way Valve Assy 9377958013 Accumulator Sub Assy 9374426133 Compressor 9810135001 Solenoid 9970055034 4-way Valve Assy 9374425198 3-way Valve Sub Assy 9374470044 2016.03.08...
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Page 20: Outdoor Unit
A C CES SORIES INDOOR UNIT OUTDOOR UNIT Wall hook bracket Cloth tape Adapter G assy 9315023018 9310519004 1/2 in. (12.70 mm) 1 piece 1 piece -> 5/8 in. (15.88 mm) 9374749034 1 piece (AOU18RLXFW1 only) Adapter E assy Remote control Tapping screw (big) 1/4 in. - Page 21 1602G4497...