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2. When the Indoor Unit Fan Does Not Operate - Initial Diagnosis

2. When the Indoor Unit Fan Does Not Operate - Initial Diagnosis

1) Checklist :

(1) Is the indoor unit fan motor properly connected with the connector (CN73)?

(2) Is the AC voltage correct?

(3) Is HALL IC in the indoor fan motor properly connected with the connector (CN43)?

(4) Is the running capacitor properly connected with PCB board?

2) Troubleshooting procedure

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

abnormal

Replace the PCB

module

Refer to page21

Replace MFC

Replace Fan motor

Fan motor

is abnormal.

MFC is abnormal

YES

-

Test rod location

+

SS71-

SS71-

12V

Normal

Voltage

AS18A5(6)RC_E 1/7/04 6:08 PM Page 17

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Содержание AS18A0RCF

Страница 1: ...SERVICE Manual SPLIT TYPE AIR CONDITIONER AS18A9 0 RCF AS24A1 2 RC Indoor Unit US18A9 0 RCF US24A1 2 RC Outdoor Unit E DB98 15775A 1 AS18A5 6 RC_E 1 7 04 6 08 PM Page 43 ...

Страница 2: ...AS18A5 6 RC_E 1 7 04 6 08 PM Page 1 ...

Страница 3: ...r injury 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 ...

Страница 4: ...lace PCB module 15 16 21 ASSEMBLY DRAWING AND PART S LIST 1 Indoor unit 2 Outdoor unit 3 PCB box 22 24 28 PCB DIAGRAM 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 ΛΙΙΙΙ ΙΙΧ Χ PERFORMANCE CURVE 30 Λ ΛΙΙ WIRING DIAGRAM 1 Indoor unit 2 Outdoor unit 38 39 Λ ΛΙΙΙΙΙΙ AS18A5 6 RC_E 1 7 04 6 08 PM Page 3 ...

Страница 5: ...r 2 Separate 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 ...

Страница 6: ...t 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 Front Panel AS18A5 6 RC_E 1 7 04 6 08 PM Page 5 ...

Страница 7: ...wire 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 AS18A5 6 RC_E 1 7 04 6 08 PM Pa...

Страница 8: ...and Cross 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 7 ...

Страница 9: ...l 2 Separate the connection wire from the terminal 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 8 ...

Страница 10: ...se 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 9 ...

Страница 11: ...om the terminal block 3 Loosen the fixing screws 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 Disassemble and reassemble cont d ΙΙ AS18A5 6 RC_E 1 7 04 6 08 PM Page 10 ...

Страница 12: ...en 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 11 ...

Страница 13: ...g for 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 pres...

Страница 14: ...ove the 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 complet...

Страница 15: ...et up the option code cont d ΙΙΙΙ A table of the option code Model AS18A9RCF AS18A0RCF AS24A1RC AS24A2RC 09000 1A0201 08000 1A0201 09000 1A0340 08000 1A0340 Option code AS18A5 6 RC_E 1 7 04 6 08 PM Page 14 ...

Страница 16: ...n the 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 automati...

Страница 17: ...04 indoor 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 N...

Страница 18: ...rocedure 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 a...

Страница 19: ...in 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 C ...

Страница 20: ...dure 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 t...

Страница 21: ...C4375Y 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 c...

Страница 22: ...Remove 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 21 ...

Страница 23: ...22 1 2 4 5 7 1 6 6 1 20 10 2 10 1 21 14 16 11 12 13 9 8 13 1 17 18 19 10 15 7 2 3 2 3 3 3 1 3 7 Assembly drawing and part s list ΙΙΛ Λ 1 Indoor unit AS18A5 6 RC_E 1 7 04 6 08 PM Page 22 ...

Страница 24: ...AL 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 BLOCK PLATE KNOCKOUT HIPS PP ASS Y PP POLYESTER CARBON POLYES...

Страница 25: ...drawing and part s list cont d ΙΙΛ Λ US18A9 0 RCF 15 19 14 10 9 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 17 1 17 2 17 2 Outdoor unit AS18A5 6 RC_E 1 7 04 6 08 PM Page 24 ...

Страница 26: ...8D190IU1EH NR BLK M8 M5 PBT BLK ASS Y 10LT MIN 1 2 ASS Y 6 35 INCH ASS Y UZ 2A BB220 40uFx450VAC 8P 35A ASS Y 2A 250V 2 5uFx450VAC C3771BD C3771BD ASS Y Description Specification Remark Q TY 1 2 3 4 5 6 7 8 9 10 11 12 12 1 12 2 12 3 12 4 13 13 1 14 14 1 15 15 1 15 2 15 3 15 4 15 5 15 6 16 17 1 17 2 18 19 DB90 00653K DB90 20160H DB67 50063A DB60 30020A DB31 00056D DB61 20008C DB94 00165A DB96 01523...

Страница 27: ...Assembly drawing and part s list cont d ΙΙΛ Λ US24A1 2 RC 1 2 3 4 7 16 6 5 8 18 13 12 13 1 15 1 15 2 15 3 15 5 15 15 4 15 6 14 2 10 9 14 1 14 12 2 12 1 11 17 1 17 2 17 AS18A5 6 RC_E 1 7 04 6 08 PM Page 26 ...

Страница 28: ...ASS Y H29B26UABCA CR M8 ASS Y 20LT MIN ASS Y ID 1 7 x 900 x 2 6 35 INCH ASS Y UZ 2A BB220 45µFx450VAC 8P 35A ASS Y 2A 250V 4µF x 450VAC G3771BD G3771BD 1 1 1 1 1 1 1 1 1 1 1 1 4 4 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 Description Specification Remark Q TY 1 2 3 4 5 6 7 8 9 10 11 12 12 1 12 2 13 13 1 14 14 1 14 2 15 15 1 15 2 15 3 15 4 15 5 15 6 16 17 1 17 2 18 DB90 00652P DB90 20210A DB67 50074A DB60 2002...

Страница 29: ... 4 1 2 5 3 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 AS24A1 2 RC 103AT DKS 103FW ASS Y ABS ABS DB93 01985A Q TY 1 1 1 1 1 Remark 3 PCB Box AS18A5 6 RC_E 1 7 04 6 08 PM Page 28 ...

Страница 30: ...d pressure Operating Condition Model 50 54 10 12 46 54 7 12 50 54 10 12 46 54 7 12 80 26 80 26 67 20 80 26 80 26 67 20 67 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 AS24A1 2 RC Standard Max over load Low temp 57 71 STD Pressure psi 3 Way Valve Piping Temp F...

Страница 31: ...1 1 1 3 1 5 1 7 1 9 2 1 2 3 65 75 85 95 105 115 Total power consumption x10 3 kW Outdoor intake air DB temperature F Total capacity 55 18 20 16 14 12 10 8 6 4 2 0 65 75 85 95 105 115 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 30 ...

Страница 32: ...pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F Low pressure 55 20 30 40 50 60 70 80 90 100 65 75 85 95 105 115 Suction pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 AS18A5 6 RC_E 1 7 04 6 08 PM Page 31 ...

Страница 33: ...5 115 Suction temperature F Outdoor ambient DB temperature F Indoor DB temperature F Discharge temperature 55 100 120 140 160 180 200 220 65 75 85 95 105 115 Discharge temperature F Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 AS18A5 6 RC_E 1 7 04 6 08 PM Page 32 ...

Страница 34: ...wer consumption x10 3 kW Outdoor intake air DB temperature F Indoor intake air WB temperature F Total capacity 55 25 20 15 10 5 0 65 75 85 95 105 115 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 33 ...

Страница 35: ...5 Condensing pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F Low pressure 55 20 30 40 50 60 70 80 90 100 65 75 85 95 105 115 Suction pressure psi G Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 34 AS18A5 6 RC_E 1 7 04 6 08 PM Page 34 ...

Страница 36: ...rature F Outdoor ambient DB temperature F Indoor DB temperature F Discharge temperature 55 100 120 140 160 180 200 220 65 75 85 95 105 115 Discharge temperature F Outdoor ambient DB temperature F Indoor DB temperature F 86 80 75 70 86 80 75 70 35 AS18A5 6 RC_E 1 7 04 6 08 PM Page 35 ...

Страница 37: ...36 PCB Diagram Λ ΛΙΙΙΙ 1 Main PCB AS18A5 6 RC_E 1 7 04 6 08 PM Page 36 ...

Страница 38: ...X6 4MM 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 ...

Страница 39: ...38 Wiring diagram Λ ΛΙΙΙΙΙΙ 1 Indoor unit AS18A9 0 RCF AS24A1 2 RC This document can not be used without Samsung s authorization AS18A5 6 RC_E 1 7 04 6 08 PM Page 38 ...

Страница 40: ... 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 39 ...

Страница 41: ...40 Schematic diagram ΙΙΧ Χ This document can not be used without Samsung s authorization AS18A9 0 RCF AS24A1 2 RC 1 Indoor unit AS18A5 6 RC_E 1 7 04 6 08 PM Page 40 ...

Страница 42: ...41 MEMO AS18A5 6 RC_E 1 7 04 6 08 PM Page 41 ...

Страница 43: ...TRONICS 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 AS18A5 6 RC_E 1 7 04 6 08 PM Page 42 ...

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