SERVICE
Manual
SPLIT TYPE AIR CONDITIONER
AS18A9(0)RCFAS18A9(0)RCFDAS24A1(2)RCAS24A1(2)RCD
Indoor Unit
US18A9(0)RCFUS18A9(0)RCFDUS24A1(2)RCUS24A1(2)RCD
Outdoor Unit
E DB98-15775A(4)
AS18A9(0)RCF SM_E_15775 3/10/05 7:16 PM Page 43
Page 1: ...PLIT TYPE AIR CONDITIONER AS18A9 0 RCF AS18A9 0 RCFD AS24A1 2 RC AS24A1 2 RCD Indoor Unit US18A9 0 RCF US18A9 0 RCFD US24A1 2 RC US24A1 2 RCD Outdoor Unit E DB98 15775A 4 AS18A9 0 RCF SM_E_15775 3 10 05 7 16 PM Page 43 ...
Page 2: ...ury caused by an incorrectly installed air conditioner If you are unsure about installation contact an installation specialist When installing the built in type air conditioner keep all electrical cables such as the power cable and the connection cord in pipe ducts cable channels e t c to protect them against liquids outside impacts and so on INSTALLING THE UNIT If the power cord of this air condi...
Page 3: ...dule 15 16 21 ASSEMBLY DRAWING AND PART S LIST 1 Indoor unit 2 Outdoor unit 3 PCB Box 22 24 28 WIRING DIAGRAM 1 Indoor unit 2 Outdoor unit 38 39 36 SCHEMATIC DIAGRAM 1 Indoor unit 40 REFRIGERATING CYCLE BLOCK DIAGRAM 29 SET UP THE OPTION CODE 12 ΙΙ ΙΙΙΙ ΙΙΙΙΙΙ ΙΙΛ Λ Λ Λ Λ ΛΙΙΙΙΙΙ ΙΙΧ Χ PERFORMANCE CURVE 30 Λ ΛΙΙ PCB DIAGRAM 1 Main PCB Λ ΛΙΙΙΙ AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 3 ...
Page 4: ...eparate the tape from the front panel 3 Contract the second finger to the left and right handle And pull the inlet grille to open 4 Take the left and right filter out 5 Loosen one of the right screw and separate the terminal cover 6 Loosen three screws of front grille Taking off the deodorizing and Electrostatic filter out Option ΙΙ If you disassemble the heat exchanger you must pump down at first...
Page 5: ... Center of the indoor unit 3 Pull tray drain out from the back body 7 Pull the upper left and right of discharge softly so that the outside cover is pulled out 8 Pull softly the lower part of discharge and push it up Caution Assemble the front panel and fix the hooks of left and right AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 5 ...
Page 6: ... from the terminal block 3 If you pull out the main PCB up it will be taken out 1 Loosen two ground screws at the right side 2 Separate the connection pipe 3 Separate the bush body at the upper side and holder at the rear side 4 Loosen the two screws at the left side 5 Lift the heat exchanger up a little to push the upper side to separate it from the indoor unit AS18A9 0 RCF SM_E_15775 3 10 05 7 1...
Page 7: ...oss Fan 5 1 Loosen two screws and separate the motor holder 2 Loosen the screw of fan motor By use of M3 wrench 3 Separate the fan motor from the fan 4 Separate the fan from the left holder bearing AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 7 ...
Page 8: ...rminal block 3 Loosen the fixing screws and separate the upper cabinet 4 Loosen the fixing screws and separate the front cabinet 5 Loosen two screws and pull up the control box 6 Loosen the nut on the terminal cover and open it 7 Separate the comp lead wire US18A9 0 RCF US18A9 0 RCFD The designs and shape are subject to change according to the model AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 8 ...
Page 9: ...the nut flange Turn to the clockwise 2 Separate the fan 3 Loosen four screws to separate the motor 1 Release the refrigerant at first 2 Disassemble the inlet and outlet pipe by welding 3 Loosen the fixing screws of the heat exchanger 4 Separate the heat exchanger 5 Loosen three bolts of the compressor 6 Separate the compressor Heat Exchanger and compressor AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM P...
Page 10: ...s and separate the upper cabinet 4 Loosen the fixing screws and separate the front cabinet 5 Loosen three screws and pull up the control box 6 Separate the terminal cover and separate the comp lead wire US24A1 2 RC US24A1 2 RCD Disassemble and reassemble Continued ΙΙ The designs and shape are subject to change according to the model AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 10 ...
Page 11: ...ide LF and RH US24A1 2 RCD 1 Loosen the fixing bolt and separate the fan 2 Loosen four fixing bolts to separate the motor 1 Release the refrigerant at first 2 Disassemble the inlet and outlet pipe by welding 3 Loosen the fixing screws of the heat exchanger 4 Separate the heat exchanger 5 Loosen four bolts of the compressor 6 Separate the compressor AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 11 ...
Page 12: ...the remote control option set N N N No o o ot t t te e e e 1 If the first number is it is correct Otherwise press the button until appears 2 When pressing the button on the display select one of them 3 When pressing the button on the display select one of them 4 When pressing the button on the display select one of them 5 When pressing the button on the display select one of them 6 When pressing t...
Page 13: ...he battery from the remote control 2 Insert the battery into the remote control 3 Press the On Off button in the direction of the remote control for set Step 5 Testing the unit When pressing the On Off button in the direction of the remote control for unit it sounds beep or ringing and the first LED STANDARD lamp on the left side is flickering at the same time then the input option is completed If...
Page 14: ...ued ΙΙΙΙ A table of the option code Model AS18A9RCF AS18A9RCFD AS18A0RCF AS18A0RCFD AS24A1RC AS24A1RCD AS24A2RC AS24A2RCD 09000 1A0201 08000 1A0201 09000 1A0340 08000 1A0340 Option code AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 14 ...
Page 15: ...compressor is reoperated The same phenomenon occurs when a power is on As a phenomenon that the compressor is reoperated after three minutes the indoor fan is adjusted automatically with reference to a temperature of the air The Fan speed operating is not allowed in the Auto or Dry mode The speed of the indoor fan is set to LL in the Dry mode The Fan speed is five steps are selected automatically ...
Page 16: ...ndoor fan of Micom normal Is voltage of 33 terminal of Micom IC04 normal 0VDC Is voltage of 18 terminal of Micom IC04 normal 5VDC Is voltage rating within 10 range applied to the between 1 and 3 of CN78 Check linkage between a power cord and a terminal tap Check fuse Does 11 12 5VDC appear in the input side of the DC regulator ic ka7805 ic02 Replace PCB module Refer to page 21 YES YES NO YES NO YE...
Page 17: ...ure After unplugging out the power cord should be reconnected within five seconds Does the STD lamp Orange blink Does the Solid State Relay SS71 work properly Is the supply voltage of the fan motor sufficient Test rod location PCB CN73 Condition Fan operate about AC 180V Normal voltage pin 3 and 5 YES YES YES NO NO NO Check as the procedure No power Refer to page 16 Micom is abnormal PCB is abnorm...
Page 18: ...thin five seconds Does the STD lamp blink YES YES NO NO YES NO NO NO YES Outdoor unit is abnormal Power relay is abnormal Replace the Power relay Replace the PCB module Refer to page 21 PCB is abnormal Check PCB Room temperature sensor is abnormal Check PCB and room temperature sensor Check as the procedure No Power Refer to page 16 Is the room sensor registered normal 50 F 10 C 68 F 20 C 86 F 30 ...
Page 19: ...Remove the power cord and plug it in again in approx five seconds Does the STD lamp blink Does it start operating when you push the swing button of the remote control Is voltage of 1 4 of Micom ICO4 changed Squarewave Is voltage of pin 10 11 IC05 KID65003 15 and 16 changed squarewave The UP DOWN louver motor is abnormal Driver IC06 KID65003 is abnormal Micom IC04 is abnormal Normal Check as the pr...
Page 20: ...5Y or Q602 C1623Y is abnormal IR LED CL 1L5EU is abnormal The melody sounds from the indoor unit when you push the On Off button on the remote control Is voltage of battery less than 2 5V Remote Control Unit Is LCD display status of the remote control normal Is voltage of 30 of remote control of Micom IC04 changed Is voltage at collector of Q601 or Q602 changed Is voltage of 26 of Micom IC04 chang...
Page 21: ... the power cord Replace the PCB module Check the connection and plug in Refer to set up the option code Does the display lamp blink or STD lamp blink YES NO Replace another PCB module AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 21 ...
Page 22: ...22 Assembly drawing and part s list ΙΙΛ Λ 1 Indoor unit AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 22 ...
Page 23: ...SE CLEANER FILTER CARBON FILTER CLEANER FILTER COVER TERMINAL FRONT PANEL ASS Y PCB DISPLAY COVER DISPLAY ASS Y TRAY DRAIN STEPPING MOTOR BLADE H ASS Y EVAP ASS Y EVAP SPACER EVAP ASS Y HOLDER MOTOR HOLDER MOTOR TERMINAL BLOCK ASS Y MOTOR FAN IN ASS Y CROSS FAN RUBBER BEARING BEARING MOTOR ASS Y MAIN PCB ASS Y THERMISTOR CASE CONTROL ASS Y BACK BODY ASS Y HOLDER PIPE PLATE HANGER COVER TERMINAL BL...
Page 24: ... Continued ΙΙΛ Λ US18A9 0 RCF US18A9 0 RCFD 15 19 14 12 2 12 1 13 13 1 18 5 3 2 4 11 1 6 7 16 8 12 4 12 3 15 2 15 1 15 3 15 5 15 4 15 6 12 10 2 10 1 10 3 9 20 10 17 1 17 2 17 2 Outdoor unit AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 24 ...
Page 25: ...1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 3 4 5 6 7 8 9 10 10 1 10 2 10 3 11 12 12 1 12 2 12 3 12 4 13 13 1 14 15 15 1 15 2 15 3 15 4 15 5 15 6 16 17 1 17 2 18 19 20 DB90 00353K DB90 01877A DB90 20160H DB90 01753A DB67 50063A DB60 30020A DB31 00056D DB61 20008C DB94 00165A DB94 00165D DB96 01523C DB90 40176B DB90 10671L DB90 01813C DB90 01349A DB71 00087A DB90 10613D DB90 01878A 48D190IU1EH DB73 00082A DB60...
Page 26: ...26 Assembly drawing and part s list Continued ΙΙΛ Λ US24A1 2 RC US24A1 2 RCD 17 1 17 2 17 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 26 ...
Page 27: ... 4 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 3 4 5 6 7 8 9 10 10 1 10 2 10 3 11 12 12 1 12 2 13 13 1 14 15 15 1 15 2 15 3 15 4 15 5 15 6 15 7 16 17 1 17 2 18 19 DB90 00652P DB90 01364D DB63 00831A DB90 20210A DB90 01752D DB67 50074A DB67 00438A DB60 20020A DB60 30020A DB31 00027F DB31 00282B DB95 20147A DB61 02171A DB94 50039C DB94 00685C DB96 01917A DB90 40176B DB64 60160B DB90 01350G DB90 01351A DB7...
Page 28: ...ox No 1 2 3 4 5 Description ASS Y MAIN PCB ASS Y THERMISTOR ASS Y PCB DISPLAY CASE CONTROL COVER DISPLAY Specification AS18A9 0 RCF AS18A9 0 RCFD AS24A1 2 RC AS24A1 2 RCD 103AT DKS 103FW ASS Y ABS ABS DB93 01985A Q TY 1 1 1 1 1 Remark AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 28 ...
Page 29: ...20 67 20 57 13 67 20 67 20 57 13 95 35 115 46 67 20 95 35 115 46 67 20 75 24 75 24 57 13 75 24 75 24 57 13 DB WB DB WB Cooling Standard Max over load Low temp 64 78 Cooling AS18A9 0 RCF AS18A9 0 RCFD AS24A1 2 RC AS24A1 2 RCD Standard Max over load Low temp 57 71 STD Pressure psi 3 Way Valve Piping Temp F C Use Temp Condition F C Indoor Outdoor T1 T2 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 29 ...
Page 30: ... indoor humidity 50 Air flow should be set at HI Total power consumption x10 3 kW Outdoor intake air DB temperature F Total capacity Total capacity x10 3 Btu h Outdoor intake air DB temperature F Indoor intake air WB temperature F Indoor intake air WB temperature F 71 67 63 59 71 67 63 55 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 30 ...
Page 31: ...ssure psi G Outdoor ambient DB temperature F Indoor DB temperature F Low pressure Suction pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 31 ...
Page 32: ...re Suction temperature F Outdoor ambient DB temperature F Indoor DB temperature F Discharge temperature Discharge temperature F Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 32 ...
Page 33: ...mption x10 3 kW Outdoor intake air DB temperature F Indoor intake air WB temperature F Total capacity Total capacity x10 3 Btu h Outdoor intake air DB temperature F Indoor intake air WB temperature F 71 67 63 59 71 67 63 55 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 33 ...
Page 34: ...Condensing pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F Low pressure Suction pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 34 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 34 ...
Page 35: ...re F Outdoor ambient DB temperature F Indoor DB temperature F Discharge temperature Discharge temperature F Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 35 AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 35 ...
Page 36: ...36 PCB diagram Λ ΛΙΙΙΙ 1 Main PCB AS18A9 0 RCF SM_E_15775 3 10 05 7 15 PM Page 36 ...
Page 37: ... 1 R206 501 502 601 604 606 902 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM 7 R201 207 208 401 403 408 603 605 608 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 9 R910 911 912 913 R CARBON 3 3KOHM 5 1 8W AA TP 1 8X3 2MM 4 R102 103 R CARBON 330KOHM 5 1 4W AA TP 2 4X6 4MM 2 R106 901 R CARBON 4 7KOHM 5 1 8W AA TP 1 8X3 2MM 2 R607 R CARBON 560OHM 5 1 4W AA TP 2 4X6 4MM 1 R402 R CARBON 6 8KOHM 5 1 8W AA TP 1 8X3 2M...
Page 38: ...8 Wiring diagram Λ ΛΙΙΙΙΙΙ 1 Indoor unit AS18A9 0 RCF AS18A9 0 RCFD AS24A1 2 RC AS24A1 2 RCD This document can not be used without Samsung s authorization AS18A9 0 RCF SM_E_15775 3 10 05 7 16 PM Page 38 ...
Page 39: ...AY TB1 2 TERMINAL BLOCK F FUSE 2A 250V FM1 FAN MOTOR S SPARK KILLER C1 CAPACITOR MARK NAME MARK NAME PR POWER RELAY TB 1 2 TERMINAL BLOCK C1 CAPACITOR FM1 FAN MOTOR F FUSE 2A 250V S SPARK KILLER This document can not be used without Samsung s authorization AS18A9 0 RCF SM_E_15775 3 10 05 7 16 PM Page 39 ...
Page 40: ...40 Schematic diagram ΙΧ This document can not be used without Samsung s authorization AS18A9 0 RCF AS18A9 0 RCFD AS24A1 2 RC AS24A1 2 RCD 1 Indoor unit AS18A9 0 RCF SM_E_15775 3 10 05 9 36 PM Page 40 ...
Page 41: ...41 MEMO AS18A9 0 RCF SM_E_15775 3 10 05 7 16 PM Page 41 ...
Page 42: ...S This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable lnternational and or domestic law AS18A9 0 RCF SM_E_15775 3 10 05 7 16 PM Page 42 ...
