Samsung AW078AA Service Manual

AW078AA AW088AA AW108AA AW128AA AW069AB AW089AB AW109AB AW129AB AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications 3. Installation and Operating Instructions 4. Disassembly and Reassembly 5. Troubleshooting 6. Exploded Views and Parts List 7. Block Diagram 8. Wiring Diagram SERVICE Manual

power cord from the circuit breaker. 2. Use proper parts: Use only exact replacement parts. (Also, we recommend replacing parts rather than repairing them.) 3. Use the proper tools: Use the proper tools and test equipment, and know how to use equipment may cause problems later- intermittent contact, for example. 4. Power Cord: Prior to repair, check the power cord and replace it if necessary. 5. Avoid using an extension cord, and avoid tapping into a power cord. This practice may result in malfunction or fire. 6. After completing repairs and reassembly, check the insulation resistance. Procedure: Prior to applying power, measure the resistance between the power cord and the ground terminal. The resistance must be greater than 30 megaohms. 7. Make sure that the grounds are adequate. 8. Make sure that the installation conditions are satisfactory. Relocate the unit if necessary. 9. Keep children away from the unit while it is being repaired. 10. Be sure to clean the unit and its surrounding area. Fig. 1-1 Avoid Dangerous Contact Fig. 1-2 No Tapping and No Extension Cords Fig. 1-3 No Kids Nearby! Fig. 1-4 Clean the Unit

Notice AW078AA AW088AA AW069AB AW089AB AW109AB AW128AA AW129AB C AW108AA

2-1 Table Item Unit of Measure AW069AB AW078AA AW088AA AW089AB Type - Voltage Volt Phase - Frequency Hz Operating Current A Power Consumption W Refrigerant Type FREON Refrigerant Charge g Capacity BTU/h EER BTU/h.W Net Weight kg Condenser Row 3× 15 2× 15 2× 15 3× 15 Condenser Fan Type Evaporator Row 2× 14 2× 14 2× 14 3× 14 Evaporator Fan Type Fan Motor Model YGN55-6F YGN55-6E YGN55-6B YGN55-6B Compressor(Rotary) Model 44C062HU1EA 44A072HW1EB 44A080HU1EB 44A076HU1EB Overload Protect - MRA12040-12008 MRA98706-12008 MRA12083-12008 MRA12083-12008 Compressor Capacitor F/VAC 35/370 25/370 35/370 35/370 Fan Motor Capacitor F/VAC 5/250 6/450 6/250 6/250 Fan speed RPM 780/750/670 780/720/650 880/780/710 880/780/710 Thermo Control - Air Swing Model WINDOW M2CK59ZT79-H Packing size: (Width× Height× Depth) mm Dimensions: (Width× Height× Depth) mm THERMISTOR 520× 345× 485 571× 454× 546 R22 Propeller Fan Blower Single

AW108AA AW109AB AW128AA AW129AB Remarks Type Voltage Volt Phase - Frequency Hz Operating Current A Power Consumption W Refrigerant Type FREON Refrigerant Charge g Capacity BTU/h EER BTU/h.W Net Weight kg Condenser Row 3× 15 3× 17 3× 17 3× 17 Condenser Fan Type Evaporator Row 2× 12 2× 16 3× 16 2× 14 Evaporator Fan Type Fan Motor Model YGN61-6A YFK70-6A YGN60-6B YGN60-6G Compressor(Rotary) Model 44B098HU2EF 44B098HU2EF 44B124HX1EL 44B124HX1EL Overload Protect - MRA12132-12007 MRA12132-12007 MRA98693-12007 MRA98693-12007 Compressor Capacitor F/VAC 45/370 45/370 50/370 50/370 Fan Motor Capacitor F/VAC 15/250 8/250 15/250 15/250 Fan speed RPM 1020/970/900 880/800/740 880/780/710 880/780/710 Thermo Control - Air Swing Model WINDOW M2CK59ZT79-H 660× 394× 595 550× 345× 485 590× 468× 578 728× 459× 647 THERMISTOR R22 Propeller Fan Dimensions: (Width× Height× Depth) mm Blower Single Packing size: (Width× Height× Depth) mm

2-2-2 Remote Control W H H D Front view Side view (Unit : mm) Timer setting button Sleep timer setting button Operating mode selection buttons Energy Saver button Air flow blade swing button Temperature adjustment buttons Fan speed adjustment buttons ON/OFF button Type W H D A 520 345 485 B 600 394 595 C 550 345 485

3-1 Installation 3-1-1 Selecting Area for Installation 1. Make sure that you install the unit in an area providing good ventilation. The air conditioner must not be blocked by any obstacle affecting the air flow near the air inlet and air outlet. 2. Make sure that you install the unit in an area that allow good air handling. The installation area must be able to endure vibration from the unit. 3. Make sure that you install the unit away from heat or vapor. 4. Make sure that you install the unit in an area which is cool and has adequate space. 5. Make sure that you install the unit in an area away from TVs, audio units, cordless phones, fluorescent lighting fixtures and other electrical appliances (obtain a clearance of at least one meter). 6. Make sure that you install the unit in an area which provides easy drainage for condensed water. 7. Make sure that you install the unit in an area not exposed to rain or direct sunlight. (Install a separate sunblind if exposed to direct sunlight.) 8. Make sure that you install the unit in an area allowing good air movement. Do not install it in a space that would cause noise amplification of noise. 9. Fix the unit firmly if mounted in a high place. Caution: Do not use the air conditioner in the following environments : greasy areas (including areas near machines), or marine areas. Contact your local dealer for advice.

3-2-1 Cooling operation mode Fan speed indicator (LOW, MED, HIGH) Temperature/Timer settings Temperature adjustment buttons Operating mode indicators (COOL, FAN) Remote control sensor Air flow blade swing button Fan Speed adjustment button Air flow blade swing indicator Energy saver indicator ON/OFF Timer adjustment button Sleep adjustment button Timer indicator Energy saver button Operating mode selection button Operating on/off The compressor is turned on and off according to the ambient temperature and set temperature. 1) Compressor on and off control • Compressor on and off control according to the ambient temperature * The compressor is turned off when "ambient temperature = set temperature * The compressor is turned on when "ambient temperature = set temperature +1˚C" 2) Default value after power reset ➔set temperature = 24˚C Fan speed = High 3) Set temperature indicating (setting) range : 1˚C interval from 18˚C to 30˚C. 3-2-2 Fan operation mode 1) If "Fan operation mode" signal is received from remocon or panel. ➔ the compressor is immediately turned off and only fan motor is operated at set blowing speed. ➔ it changes such as "High ➔Med ➔Low ➔ High"( if Fan speed is selected). 2) The initial Fan motor speed is set to "High". 3) The set temperature can not be indicated and set. 3-2-3 Energy saver operation mode * If the compressor turn off at the cooling operation, the fan motor turn off after operation during the fixation time only, and operation that energy saver by turn off the fixation time only, and operation that energy saver by turn off the motor continuously before the condition of the compressor on. * The fan motor is not operated at flow wind operation. * Energy saver operation specification at the cooling operation. 1) Fan motor control in compressor on : operate with setting wind speed 2) Fan motor control in compressor off : After compressor off, the fan motor is operated breeze for 2 minutes and then it turn off. 3) After the fan motor off, the compressor and fan motor is operated normally when the compressor on.

Samsung Electronics 3-3 3-2-4 Sleep operation mode 1) Enable to sleep operation only when cooling operation. 2) First, 7-SEG LED DISPLAY "SLEEP" while 15 second, Second, 7-SEG LED DISPLAY "8Hr" And, automatically SET OFF after operated while 8 Hour 3) If sleep operation, setting Temperature rise 1˚C after 1 Hour 4) ON TIMER operation, not operation, ENERGY SAVER operation, not sleep operation. 3-2-5 Air flow blade swing motor operation 1) The Air flow blade swing motor is turned on and off according to Air flow blade swing operation in remocon or panel, if SET is cooling or Fan operation mode. 2) If the operation mode is "ENERGY SAVER", in case of fan motor being turned off Air flow blade swing motor is immediately turned off. 3-2-6 LED display indication in case of error detection ERROR OPERATION ROOM THERMISTOR (OPEN or SHORT) 7-SEG LED DISPLAY E1 displayed 1) Set operation in case of error occurrence. • Malfunction of each temperature sensor (open, short) - Error mode display, warning sound. - The operation status is off.

Key operational function POWER Operation start and stop * First ON = operation start, second ON = operation stop - Selected as "OFF –> COOL or FAN". (DEFAULT=OFF) * Continuous operation is not available. Mode Operation mode change * at every ON - Selected as "COOL –> FAN". (Default=COOL) * If operation is OFF, it is considered as an invalid key. * Continuous operation is not available. Fan speed Fan motor speed setting * at every ON - Selected as “HIGH →MED →LOW →HIGH”. (DEFAULT=HIGH) Temperature Currently displayed set temperature increase/decrease (L M) * At every pressing, the set temperature is changed by 1˚C (increase(L) : 18˚C →19˚C →... →29˚C →30˚C) (decrease(M) : 24˚C →23˚C →... →17˚C →18˚C) * In case of the set temperature of 30˚C, when the “increase” key is pressed temperature does not increase any more. * In case of the set temperature of 18˚C, when the “decrease” key is pressed temperature does not decrease any more. * In case of above situation, when “increase/decrease“ key is pressed by remocon, warning sound is generated. * If operation is OFF, it is considered as an invalid key. * In case of “FAN” mode operation, it is considered as an invalid key. * Continuous operation is available. Circulaire Circulaire motor operation and stop * Once ON=Circulaire motor operation. Another ON-Circulaire motor stop. * Continuous operation is not available. * In case of operation stop, when the fan motor is turned off it is considered as an invalid key. Timer Setting the on/off timer (ON/OFF) * Can set “OFF TIMER HOUR“ if set is operation * Can set “ON TIMER HOUR“ if set is not operation * Once ON = standby setting TIMER : “– –“ displayed * In case of key pressing in status of standby setting ON/OFF TIMER (––Hr →1Hr →2Hr →... –> 23Hr →24Hr) * If press TIMER key countinuosly operate such the lower part (––Hr →1Hr →2Hr →... →24Hr →--Hr) * Continuous operation is available. Sleep SLEEP mode on and off * Once ON=SLEEP mode on, Another ON=SLEEP mode off • Continuous operation is not abailable • Operation off, on timer Operation, save operation , not key operation * Not SLEEP operation is FAN mode Energy Saver Power save mode on and off * Once ON=Power save mode on, Another ON=Power save mode off * Continuous operation is not available. * If operation is OFF, it is considered as an invalid key. 3-2-7 Panel key operation Key discription Key name

3-2-8 LED lamp operation specifications LAMP name Operations specifications COOLING The mode is set to "COOL" →ON Others →OFF FAN The mode is set to "FAN" →ON Others →OFF HIGH The mode is set to "HIGH" →ON Others →OFF MED The mode is set to "MED" →ON Others →OFF LOW The fan speed is set to "LOW" →ON Others →OFF TIMER The mode is set to "TIMER" →ON Others →OFF ENER SAVER The mode is set to "ENERGY SAVER" →ON Others →OFF CIRCULAIRE The mode is set to "CIRCULAIRE" →ON Others →OFF In case of set temperature display →NO. (1) 7–SEG LED DISPLAY indicates temperature of the tens digit →NO. (2) 7-SEG LED DISPLAY indicates temperature of the units digit In case of time display →NO. (1) 7–SEG LED DISPLAY indicates time of the tens digit →NO. (2) 7–SEG LED DISPLAY indicates time of the units digit In case of set temperature display →NO. (3) 7–SEG LED DISPLAY indicates temperature unit(˚) →NO. (4) 7-SEG LED DISPLAY indicates temperature unit(C) In case of time display →NO. (3) 7–SEG LED DISPLAY indicates time unit(H) of the tens digit →NO. (4) 7–SEG LED DISPLAY indicates time unit(r) of the units digit First, 7–SEG LED DISPLAY "SLEEP" while 15 second, Second, 7-SEG LED DISPLAY "8Hr" (1) (2) (3) (1) (2) (3) (4) (4)

3-3-1 Remocon key operation 11) In case of pressing ”POWER” key, operation start and stop. 12) In case of pressing ”COOL” key, cool mode operation start. 13) In case of pressing ”FAN” key, fan mode operation start. 14) In case of pressing ”HIGH” key, fan motor operates high speed. 15) In case of pressing ”MED” key, fan motor operates mid speed. 16) In case of pressing ”LOW” key, fan motor operates low speed. 17) In case of pressing ”ENERGY SAVER” on/off key, set operates as power saving mode. 18) In case of pressing ”L” key, set temperature increase by 1˚C(18˚C ~ 30˚C). 19) In case of pressing ”M” key, set temperature decrease by 1˚C(30˚C ~ 18˚C). 10) In case of pressing ”TIMER” key, the convenient reserve TIMER time increase by 1 Hr (1Hr ~ 24Hr). 11) In case of pressing ”SLEEP” key, SLEEP operates. 12) In case of power off, all keys except POWER key are considered as an invalid key. Timer setting button Sleep timer setting button Operating mode selection buttons Energy Saver button Air flow blade swing button Temperature adjustment buttons Fan speed adjustment buttons ON/OFF button

3-3-2 Resistor values table of “ROOM THERMISTOR” for each temperature Temperature [˚C] THERMISTOR RESISTOR [Kohm] ±1% 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 2.229 2.296 2.365 2.437 2.512 2.589 2.669 2.752 2.838 2.928 3.021 3.116 3.216 3.319 3.426 3.537 3.652 3.772 3.897 4.026 4.161 4.300 4.444 4.594 4.749 4.912 5.080 5.256 5.439 5.630 5.828 6.033 6.246 6.468 6.699 6.941 7.192 7.455 7.729 8.015 8.313 Temperature [˚C] THERMISTOR RESISTOR [Kohm] ±1% 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 8.622 8.944 9.281 9.632 10.000 10.380 10.780 11.200 11.630 12.090 12.560 13.060 13.570 14.120 14.680 15.280 15.900 16.550 17.240 17.960 18.700 19.480 20.290 21.150 22.050 22.990 23.900 25.030 26.130 27.280 28.470 29.720 31.040 32.430 33.890 35.430 37.050 38.760 40.560

4-1 Compressor Replacement Flow Chart Locate cause of defect Release refrigerant Disconnect electrical wiring from compressor Cut refrigerant lines from compressor Plug disconnected lines Replace compressor Inspect electrical wiring for defects, and terminals for correct and secure connections Solder discharge line Corrective action Check refrigerant oil level Add oil as necessary Solder suction line Use nitrogen gas Perform soldering function Fill system with nitrogen gas Check for leakage Pinch and braze filling tube Recharge system Evacuate system Release nitrogen gas? Problem? Low oil level? N Y Y N N Y Leakage?

4-2-1 Oil quality 4-2-2 Replacing and refilling the refrigerant oil 1. Change the compressor - DO NOT recharge the oil as the compressor itself is already charged. 2. Change the condenser .... add 50cc 3. Change the evaporator .... add 50cc 4. When the refrigerant is replaced .... add 30cc oil. 5. After vacuum is completed, the oil is filled through the high pressure side. 6. In the event of a refrigerant leak, generally it is not necessary to add oil. (Unless the oil has leaked significantly.) Fill the transparent container with 10cc of oil, and then conduct the test. Conidition of Refrigerant Cycle Normal Over-heated Compressor Damage Color Straw Yellow Brown Color Dark Brown Odor No Odor - Pungent oil Remarks Return with the system Change the oil Change the oil Oil Condition 4-2 Samsung Electronics

Stop operating the air conditioner, and pull out the power cord before repair. No. Part name Procedures Remarks ! @ # Ass'y Grill Ass'y Cabinet Ass'y COVER EVAP 1. Pull the panel front and remove the screw on the grille. 2. Hold the lower part of grill with two hands while pressing down on both sides of the lower part of the cabinet, pull it forward by about 30, and the then lift it up for removal. 1. Remove the two screws both side cabinet. 2. Pull the front both side, and remove the unit from the cabinet. 1. Remove 6 screws on the COVER EVAP. 2. Remove the COVER EVAP. POWER / MODE *The type of front-panel depends on models.

4-4 Samsung Electronics No. Part name Procedures Remarks $ % ^ Ass'y Control PLATE EVAP CASING & TRAY DRAIN Blower & Propeller Fan 1. Remove the blade V(and arm blade). 2. Remove 3 screws on the FRAME BLADE. 3. Remove the FRAME BLADE. 4. Remove 1 screw under the Base pan, and earth wire screw. 5. Remove two lead wire assemblies. 6. Take out the control box forward. 1. Remove 2 screws on the front side. 2. Remove 4 screws on the left side. 3. Pull up the PLATE EVAP CASING and TRAY DRAIN. 1. Remove 2 screws on the rear side (Base pan), and 7 screws on the case cond. 2. Pull up the CONDENSER from the Base pan. 3. Remove the nut, and remove the propeller fan. 4. Remove the nut, and remove the BLOWER.

Samsung Electronics 4-5 No. Part name Procedures Remarks & * CASE COND Motor & the others parts 1. Remove the CASE COND. 1. Remove 4 screws on the MOTOR, and remove the motor. 2. Remove 4 screws on the mounter motor, and remove the mounter motor. 3. Remove the CASE BLOWER. 4. Remove 4 screws on the PARTITION.

Stop operating the air conditioner, and pull out the power cord before repair. No. Part name Procedures Remarks ! @ # Ass'y Grill Ass'y Cabinet COVER-EVAP 1. Pull the grille air inlet and remove the screw on the grille. 2. Hold the lower part of the grill with two hands while pressing down on both sides of the lower part of the cabinet, pull it forward by about 30, and then lift it up for removal. 1. Remove the screws on both sides of the cabinet to disconnect the cabinet and frame. 2. Pull the handle on the front side of the bottom, and remove the unit from the cabinet. 1. Remove the 8 screws on the COVER EVAP. 2. Remove the COVER EVAP. 4-6 Samsung Electronics POWER / MODE *The type of front-panel depends on models.

Samsung Electronics 4-7 No. Part name Procedures Remarks $ % ^ Ass'y Control PLATE EVAP CASING & TRAY DRAIN Case Cond & Propeller Fan 1. Remove the blade V(and arm blade). 2. Remove 4 screws on the FRAME BLADE. 3. Remove the FRAME BLADE. 4. Remove 2 screws under the BASE PAN, and earth wire screw. 5. Remove two lead wire assemblies. 6. Take out the control box forward. 1. Remove 2 srews on the front side. 2. Remove 3 screws on the left side. 3. Remove 1 screw from the Base pan. 4. Pull up the PLATE EVAP CASING and TRAY DRAIN. 1. Remove 2 screws on the rear side (Base pan), and 7 screws on the case cond. 2. Pull up the CONDENSER from the Base pan. 3. Remove the Nut, and remove the propeller fan. 4. Remove the Nut, and remove the BLOWER.

4-8 Samsung Electronics No. Part name Procedures Remarks & * CASE COND MOTOR & the others parts 1. Remove the CASE COND. 1. Remove 4 screws on the MOTOR, and remove the motor. 2. Remove 4 bolts on the mounter motor, and remove the mounter motor. 3. Remove the CASE EVAP. 4. Remove 4 screws on the partition.

Check the basic checkpoints first to determine whether it is machine trouble or a problem in the operation method. When it is not related to the basic checkpoints, perform checking in accordance with the procedures of troubleshooting by symptom. 1) Is the voltage of the power source appropriate ? (1) It should be within the rating voltage ±10% range. (2) The air conditioner may not operate properly when the voltage is out of this range. 2) Is the connection with the fan motor, compressor wire, and starting condenser appropriately made ? 3) The symptoms listed in the table below are not indicative of machine trouble. Symptom Cause and check No operation • Check whether there is power failure or the power plug is pulled out. • Check whether the unit is stopped as a result of completion of the sleep time. • Pull out the power plug for ten seconds, and then insert it again. Air flows, but • Check whether the Air filter is clogged with dust or is dirty. no cooling • Check whether the desired temperature is too high. Set the desired temperature to a lower level than the current temperature. • Check whether it is in "FAN" mode. The remocon does • Check whether battery is completely depleted. not operate • Check whether the battery is properly inserted. • Check whether the receiving window of the remocon for the assembly main PCB is blinded. • Check whether the remocon is affected by jamming due to a neon sign. No temperature • Check whether the unit is in "FAN" mode. setting (In "FAN" mode, only the current temperature is displayed, and the desired temperature is not set.) ❈Checking and Display of Fault Area ERROR OPERATION ROOM THERMISTOR (OPEN OR SHORT) ERROR OPERATION E1 displayed

5-2-1 No power 1) Check points (1) Is the voltage of the power source normal ? (the rating voltage ±10% range.) (2) Is the electric wire in good contact ?(CN 71, RY 71) (3) Is the output voltage of the IC01(KA7812) normal ?(DC 11.5V ~ DC 12.5V) (4) Is the output voltage of the IC02(KA7805) normal ?(DC 4.5V ~ DC 5.5V) Turn off the power, and then turn it on again five seconds later. Replace the assembly main PCB. Dose the buzzer sound, when the power on? Check whether the "COOLING ICON" LED lamp is on, and the operation starts when pressing the ON/OFF button of the remocon. Is the primary voltage of the transformer normal? (the rating voltage ±10% range.) Is the secondary voltage of the transformer normal? (AC 13V ~ AC 17V) Is the F701(3.15A) fuse blown? Is the rectifier diode(D101~D104) normal? Are the IC01(KA7812) and IC02(KA7805) normal? - Is the voltage of DC 17V ~ DC 23V applied at both ends of the C101 electrolytic condenser? - Is the voltage of DC 12V applied at both ends of the C102 electrolytic condenser? - Is the voltage of DC 5V applied at both ends of the C103 electrolytic condenser? Normal operation. Normal operation. Replace the fuse. Check the power cord and electric wire. Check and replace the trans. • Check the D101 ~ D104 for cold soldering. • Replace the rectifier diode • Check both ends of the C101 for short and cold soldering. • Check the +12V for a short. • Check the +5V for a short. • Check and replace the C101~104. • Check the IC01, and IC02 for cold soldering and a short. • Replace the IC01, and IC02. Y N N N Y Y Y Y Y Y Y N N N N N

1) Check points (1) Is the voltage of the power source normal ? (the rating voltage ±10% range.) (2) Is the electric wire in good contact ?(CN71, RY71) (3) Is the connection of the assembly main PCB, and MEMBRANE KEY PAD in good contact? (CN91) Check the micom (IC04) for a short, and replace it. Check the micom (IC04) for a short, and replace it. Check the Q901~ Q905 for a short, and replace it. Check the micom (IC04) for a short, and replace it. Normal operation Check the micom (IC04) for a short, and replace it. Replace the MEMBRANE KEY PAD Replace the MEMBRANE KEY PAD. Y N Normal operation N N N N N N Y Y Y Y Y Y Y Turn off the power, and then turn it on again five seconds later. When the LED DISPLAY is not operated. When the MEMBRANE KEY is not operated. Is the voltage of the micom (IC04) No.1, 2, 38~43 port a square wave? Is the voltage of the micom (IC04) No.13, 14 port a square wave? Is the voltage of the micom (IC04) No.3, 4, 10, 11, 44 port a square wave? Is the voltage of the micom (IC04) No.3, 4, 10, 11, 44 port a square wave? Is the voltage of the Q901 ~ Q905 square wave? Check the IC07 for a short, and replace it. N Is the voltage of the IC07 No. 10~16 a square value?

1) Check points (1) Is the voltage of the power source normal ? (the rating voltage ±10% range. ) (2) Is the electric wire in good contact ? (CN71, RY71) (3) Is the assembly main PCB in good contact with the MEMBRANE KEY PAD(CN91) (4) Is the battery voltage of the remocon above DC 2.7V? Turn off the power, and then turn it on again five seconds later. Replace the assembly main PCB. Dose the Buzzer sound, when the power on? Check whether the "COOLING ICON" LED lamp is on and th operation starts when pressing the on/off button of the remocon. Is the battery voltage of the remocon above DC 2.7V? Is the collector voltage of the remocon QT1, QT2 a square wave? Does the X-TAL(RJ 455JB) oscillate normally? Is the input voltage of the micom(IC04) No. 15 pin of the assembly main PCB a aquare wave? Go to the clause "No power". The remocon is normally operated. Replace the battery. • Check the X-TAL for cold soldering and a short. • Replace relevant components. • Check the micom(ICT1) QT1, and QT2 for cold soldering and a short. • Replace relevant components. • Check the R415 components. • Check the assembly main PCB micom(IC04). N Y N Y Y Y Y N N N N Y

1) Check points (1) Is the voltage of the power source normal ? (the rating voltage ±10% range. ) (2) Is the desired temperature lower than the indoor temperature in the “COOL” mode? (Compressor stopped) (3) Is the starting condenser in good contact? (4) Is the electric wire in good contact ? (CN71, RY71) (5) Is the output voltage of the IC01(KA7812) and IC02(KA7805) normal ? Turn off the power, and then turn it on again five seconds later. Replace the compressor. Dose the Buzzer sound, when the power on? Check whether the "COOLING ICON" LED lamp is on and the operation starts when pressing the on/off button of the remocon. Is the IC03 output normal? - When the compressor is ON, IC03 No. 15 pin –> Low. Does the relay(RY71) operate normally? - When the compressor is ON, the RY71 should operate. Is the compressor normal? Go to the clause "No power". • Go to the clause "when he remocon does not operate". • Check the IC03 for short and cold soldering. • Replace the IC03. • Check the relay coil resistance. (resistance : About 150Ω±20Ω) • Replace the relay. • Check the operation of the O.L.P, and replace it if necessary. • Check the compressor resistance.(0Ω: short, ∞Ω: open) N Y Y Y Y Y N Normal operation. N Y N N N Check whether the compressor is activated in three minutes after turning on the power with the "COOLING ICON" LED lamp being switched on when selecting the cool mode of the remocon.

1) Check points (1) Is the voltage of the power source normal ? (the rating voltage ±10% range. ) (2) Is the electric wire in good contact ?(CN71, RY71) (3) Is the swing motor connector in good contact?(CN71) (4) Is the terminal connected to the swing motor in good contact? (5) Is the output voltage of the IC01(KA7812) and IC02(KA7805) normal? Turn off the power, and then turn it on again five seconds later. Replace the air-swing motor. Dose the buzzer sound, when the power on? Does the air-swing motor operate when pressing the air-swing button of the remote control? Is the IC03 output normal? - When the air-swing motor is on, IC03 No. 11 pin ➝Low Does the relay(RY 75) operate normally? - When the air-swing motor is operated, the RY75 should be operated. Go to the clause "No power". Normal operation. • Check the IC03 for a short and cold soldering. • Replace the IC03. • Check the relay coil resistance. (Normal: About 400Ω) • Replace the relay. • Check the air-swing motor resistance. (0Ω: short, ∞Ω: open) N Y N Y Y Is the air-swing motor normal? Y Y N Check whether the “COOLING ICON” LED lamp is on, and the operation starts when pressing the ON/OFF button of the remocon? Go to the clause of “when the remocon dose not operated” Y N N N

1) Check points (1) Is the voltage of the power source normal ? (the rating voltage ±10% range. ) (2) Is the electric wire in good contact ?(CN71, RY71) (3) Is the starting condenser(FAN MOTOR) in good contact? (4) Is the fan motor connector in good contact?(CN73) (5) Is the output voltage of the IC01(KA7812) and IC02(KA7805) normal ? Turn off the power, and then turn it on again five seconds later. Replace the fan motor. Dose the buzzer sound, when the power on? Check whether the "COOLING ICON" LED lamp is on and the operation starts when pressing the on/off button of the remocon. Is the IC03 output normal? - When the fan motor is High, IC03 No. 13 pin –> LOW. - When the fan motor is Med, IC03 NO. 14 pin –> LOW. - When the fan motor is Low, IC03 No. 16 pin –> LOW. Does the relay(RY 72, 73) operate normally? - When the fan motor is High, RY72 should operate. - When the fan motor is Med, RY73 should operate. - When the fan motor is Low, RY76 should operate. Go to the clause "No power". • Go to the clause of "when the remocon does not operated". • Check the IC03 for a short and cold soldering. • Replace the IC03. • Check the relay coil resistance. (Normal: About 400Ω) • Replace the relay. N Y Y Y Is the fan motor normal? Y Y N N N • Check the fan motor resistance. (0Ω: short, ∞Ω: open) • Check the fan motor thermal fuse? (130˚C) N

6-1 Main unit ( Type "A" And "C" ) 19 21 24 25 26 22 20 23 1 2-3 3 2 2-2 2-1 6-1 5 15 17 10 11 16 28 29 27 30 7 8 9 14 18 12 13 6 4 32 31 31-5 31-10 31-9 31-7 31-6 31-1 31-2 31-13 31-3 31-4 31-8 31-12 31-11 33 You can search for the updated part code number through the ITSELF. URL : http://itself.sec.samsung.co.kr

I Part List ( Type “A” And "C") AW069AB AW078AA AW088AA AW089AB AW108AA 1 GRILLE AIR-INLET DB64-10158A HIPS 1 1 1 1 1 2 ASSY PANEL FRONT DB92-00042E SC94445R 1 1 1 1 1 2-1 GUARD AIR-FILTER DB63-30158A HIPS 1 1 1 1 1 2-2 PANEL FRONT DB64-70093A HIPS 1 1 1 1 1 2-3 BLADE-H DB66-30191A HIPS 1 1 1 1 1 3 ASSY EVAP DB96-00994A OD7.0*2*14 1 1 1 - - DB96-01574A OD7.0*3*14 - - - 1 - DB96-01514A OD9.52*2*12 - - - - 1 4 ARM BLADE DB66-70031A PS 1 1 1 1 1 5 BLADE-V DB66-30211B PP,SC-97525R 1 1 1 1 1 6 FRAME BLADE DB90-00508A ASSY 1 1 1 1 - DB90-00508B ASSY - - - - 1 6-1 LEVER DAMPER DB66-00278A ABS,T2.0 - - - - 1 DB66-00126A ABS,T2.0 1 1 1 1 - 7 PLATE EVAP CASING DB61-00644A SGCC-M 1 1 1 1 - DB61-00689A SGCC-M - - - - 1 8 PLATE PARTITION DB71-00068B SGCC-M,T0.8 1 1 1 1 1 9 CASE EVAP DB61-00645A 30FO-PS,T10 1 1 1 1 1 10 NUT WASHER DB60-30004A M6 SM20C NTR 1 1 1 1 1 11 BLOWER DB67-00013A ABS,OK-PJT 1 - - - - DB67-50078A ABS,180 - 1 1 1 1 12 MOUNT MOTOR DB61-00651A SGCC-M 1 1 1 1 - DB61-00690A SGCC-M - - - - 1 13 MOTOR FAN DB31-00123C YGN55-6F 1 - - - - DB31-00123B YGN55-6E - 1 - - - DB31-00123A YGN55-6B - - 1 1 - DB31-00140A YGN61-6A - - - - 1 14 ASSY COVER EVAP DB90-00539A ASSY 1 1 1 1 - DB90-00539B ASSY - - - - 1 15 FAN PROPELLER DB67-50077A ABS,290 1 1 1 1 1 16 NUT FLANGE DB60-30020A M6,FEFZY,LF 1 1 1 1 1 17 CASE COND DB61-00423A PP 1 1 1 1 1 18 ASSY BASE DB90-20212F SGCC-M 1 1 1 1 - DB90-00544B SGCC-M - - - - 1 19 ASSY COND DB96-01027A OD7*3*15 1 - - 1 - DB96-01515A OD7*3*15 - - - - 1 DB96-00995A OD7*2*15 - 1 1 - - 20 COMPRESSOR 44C062HU1EA 115V/60Hz 1 - - - - 44A072HW1EB 115V/60Hz - 1 - - - 44A080HU1EB 115V/60Hz - - 1 - - 44A076HU1EB 115V/60Hz - - - 1 - 44B098HU2EF 115V/60Hz - - - - 1 21 TUBE SUCTION DB96-00966A OD9.52 1 1 1 1 - DB62-00871A OD9.52 - - - - 1 22 TUBE DISCHARGE DB62-00483A 8K TOP 1 - - 1 - DB62-00675A OD7.93 - 1 1 - - DB62-00826A T-PJT - - - - 1 Q'TY NO CODE NO DESCRIPTION SPECIFICATION

I Part List ( Type “A” And "C" ) AW069AB AW078AA AW088AA AW089AB AW108AA 23 TUBE CAPILARY DB96-01018A ID1.3*1100 1 - - - - DB96-00992A ID1.3*900 - 1 - - - DB96-00993A ID1.42*1200 - - 1 1 - DB62-00872A 2-ID1.2*1200 - - - - 1 24 NUT WASHER DB60-30018A M5 SM20C 1 1 1 1 1 25 COVER TERMINAL DB63-10026A NORYL,SEI-701 1 1 1 1 1 26 OLP DB47-20002F MRA12040-12008 1 - - - - DB47-20001V MRA98706-12008 - 1 - - - - MRA12083-12008 - - 1 1 - - MRA12132-12007 - - - - 1 27 GASKET DB63-20002A EPDM T0.8 1 1 1 1 1 28 NUT WASHER DB60-30028A HEX 2C M8 ZPC 3 3 3 3 3 29 GROMMET ISOLATER DB73-00070A NR 3 3 3 3 3 3 30 ASSY CABINET DB90-00133P N-PJT 1 1 1 1 - DB90-00701A T-PJT - - - - 1 31 ASSY CONTROL DB93-00465B 6K 1 - - - - DB93-00465F 7K - 1 - - - DB93-00465A 8K - - 1 1 - DB93-00465E 10K - - - - 1 32 TRAY DRAIN DB63-00274A HIPS,T1.5 1 1 1 1 - DB63-00296A HIPS,T2.0 - - - - 1 33 ASSY REMOCON DB93-00284K ARC-709 1 1 1 1 1 Q'TY NO DESCRIPTION CODE NO SPECIFICATION

19 30 22 11 15 17 24 25 26 27 12 13 1 16 10 4 28 29 20 18 23 2 2-2 2-1 2-3 3 7 9 8 14 6 5 5-1 6-1 21 32 31 31-5 31-10 31-9 31-7 31-6 31-1 31-2 31-13 31-3 31-4 31-8 31-12 31-11 33 You can search for the updated part code number through the ITSELF. URL : http://itself.sec.samsung.co.kr

I Part List (Type “B”) AW109AB AW128AA AW129AB 1 GRILLE AIR-INLET DB64-10145A HIPS,T2.5 1 1 1 2 ASSY PANEL FRONT DB92-10319C ASSY 1 1 1 2-1 GUARD AIR-FILTER DB63-30142A HIPS,T2 1 1 1 2-2 PANEL FRONT DB64-70080A HIPS,T2.5,W600 1 1 1 2-3 BLADE-H DB66-30169A PP,T2.5 1 1 1 3 ASSY EVAP DB96-00983A 7-2*16*273 1 - - DB96-00978A 9.52-2*14*355 - - 1 DB96-01002A 9.52-2*14*355 - 1 - 4 ARM BLADE DB66-70022D PS,T2,SC-96527R 1 1 1 5 BLADE-V DB66-30170A PP,SC-97525R 1 1 1 6 FRAME BLADE DB90-00510B AW129AB/XAA 1 1 1 6-1 LEVER DAMPER DB66-70024A HIPS,T2.5 1 1 1 7 PLATE EVAP CASING DB71-00074B SGCC-M,T0.7 1 1 1 8 PLATE PARTITION DB71-00075B SGCC-M,T0.8,358 1 1 1 9 CASE EVAP DB61-00649A 30FO-PS,T10 1 1 1 10 NUT WASHER DB60-30004A M6 SM20C NTR 1 1 1 11 BLOWER DB67-50078A ABS,180 1 - 1 DB67-50073A ABS,200 - 1 - 12 MOUNT MOTOR DB61-00650A SGCC-M 1 1 1 13 MOTOR FAN DB31-00122F YGN60-6A 1 - - DB31-00122A YGN60-6B - 1 - DB31-00122E YGN60-6G - - 1 14 ASSY COVER EVAP DB90-00511A ASSY 1 1 1 15 FAN PROPELLER DB67-00139A ABS+G.F20% 1 1 1 16 NUT FLANGE DB60-30020A M6,FEFZY,LF 1 1 1 17 CASE COND DB61-00647A PP,T2 1 1 1 18 ASSY BASE DB90-00514A D-PJT 1 1 1 19 ASSY COND DB96-00979A 7-3*17*510.4 1 1 1 20 COMPRESSOR 44B098HU2EF 115V,60Hz 1 - - 44B124HX1EL 115V,60Hz - 1 1 21 TUBE SUCTION DB62-00684A OD12.7 1 1 1 22 TUBE DISCHARGE DB62-00327A OD9.52,T0.7 1 1 1 23 TUBE CAPILARY DB62-00687A ID1.7*900 - 1 - DB62-00687B ID1.5*900 1 - - DB62-01026A 2-ID1.3*1000 - - 1 24 NUT FLANGE DB60-30018A M5 SM20C 1 1 1 25 COVER TERMINAL DB63-10026A NORYL,SEI-701 1 1 1 26 OLP - MRA12132-12007 1 - - DB47-20001U MRA98693-12007 - 1 1 27 GASKET DB63-20002A EPDM T0.8 1 1 1 28 NUT WASHER DB60-30028A HEX 2C M8 ZPC 3 3 3 29 GROMMET ISOLATER DB73-00070A NR 3 3 3 3 30 ASSY CABINET DB90-00364B D-PJT 1 1 1 31 ASSY CONTROL DB93-00674B 10K 1 - - DB93-00674A 12K - 1 1 32 TRAY DRAIN DB63-00276A 30FO-PS,T10 1 1 1 33 ASSY REMOCON DB93-00284K ARC-709 1 1 1 Q'TY NO CODE NO DESCRIPTION SPECIFICATION

5 10 9 7 6 1 2 3 4 8 13 12 11 I Part List ( Type “A” And "C" ) 0 ASSY CONTROL DB93-00465B 6K 1 - - - DB93-00465F 7K - 1 - - DB93-00465A 8K - - 1 - DB93-00465E 10K - - - 1 1 SWITCH MEMBRANE DB34-00013B 99*134.5,PC 1 1 1 1 2 PANEL CONTROL DB64-00259B HIPS,T2.0,V5 1 1 1 1 3 ASSY PCB MAIN DB93-00407A COOLING 1 1 1 1 4 CASE CONTROL UP DB61-00419A SGCC-M T0.7 1 1 1 1 5 SWING MOTOR DB31-00084A M2CK59ZT79-H 1 1 1 1 6 C-OIL 2501-001228 35 F 370VAC 1 - 1 - 2501-001226 25 F 370VAC - 1 - - 2501-001230 45 F 370VAC - - - 1 7 CLIP CAPACITOR DB65-10008B SGCC-M T0.8 1 1 1 1 8 POWER CORD ASSY DB39-00343A 125V,13A 1 1 1 1 9 C-FILM 2301-001451 5 F 250VAC 1 - - - 2301-001449 6 F 450VAC - 1 1 - 2301-001452 15 F 250VAC - - - 1 10 TRANSFORMER DB26-00006B AC115V,50Hz/60Hz 1 1 1 1 11 CASE CONTROL LOW DB61-00417A SGCC-M T0.7 1 1 1 1 12 THERMISTOR DB32-10051B 10K/25 103AT 1 1 1 1 13 WINDOW REMOCON DB64-00321A MTN-G2 1 1 1 1 AW108AA AW088AA AW089AB NO CODE NO DESCRIPTION SPECIFICATION Q'TY AW069AB AW078AA

5 10 9 7 6 1 2 3 4 8 13 12 11 I Part List (Type “B”) 0 A S S Y C O N TR O L D B 9 3 - 0 0 6 7 4 B 1 0 K 1 - D B 9 3 - 0 0 6 7 4 A 1 2 K - 1 1 S W I T C H M E M B R A N E D B 3 4 - 0 0 0 1 3 B 9 9 * 1 3 4 . 5 ,P C 1 1 2 P A N E L CO N T R O L D B 6 4 - 0 0 2 5 9 B H IPS ,T2 .0,V 5 1 1 3 A S S Y P C B M A I N D B 9 3 - 0 0 4 0 7 A C O O L IN G 1 1 4 C A S E C O N TR O L U P D B 6 1 - 0 0 4 2 1 A S G C C - M T 0 .7 1 1 5 S W I N G M O T O R D B 3 1 - 0 0 0 8 4 A M 2 C K 5 9 Z T 7 9 - H 1 1 6 C-O IL 2 5 0 1 - 0 0 1 2 3 0 4 5 F 3 7 0 V A C 1 - 2 5 0 1 - 0 0 1 2 3 1 5 0 F 3 7 0 V A C - 1 7 C L I P C A P A C I T O R D B 6 5 - 1 0 0 0 8 B S G C C - M T 0 .8 1 1 8 P O W E R C O R D A S SY D B 3 9 - 0 0 3 4 3 B 1 2 5 V , 1 5 A 1 1 9 C-F ILM 2 3 0 1 - 0 0 1 4 4 8 8 F 2 5 0 V A C 1 - C-F ILM 2 3 0 1 - 0 0 1 4 5 2 1 5 F 2 5 0 V A C - 1 1 0 T R A N S FO R M E R D B 2 6 - 0 0 0 0 6 B A C 1 1 5 V , 5 0 H z / 6 0 H z 1 1 1 1 C A S E C O N TR O L L O W D B 6 1 - 0 0 4 1 7 A S G C C - M T 0 .7 1 1 1 2 T H E R M I S T O R D B 3 2 - 1 0 0 5 1 B 1 0 K / 2 5 1 0 3 A T 1 1 1 3 W I N D O W R E M O C O N D B 6 4 - 0 0 3 2 1 A M T N - G 2 1 1 Q 'T Y N O C O D E N O D E S C R IP T IO N S P E C I F I C A T I O N A W 1 0 9 A B A W 1 2 8 A A A W 1 2 9 A B

Samsung Electronics 7-1 7-1 Refrigerating Cycle Block Diagram PINCH PIPE (SERVICE VALVE) SUCTION LINE ACCUMULATOR/COMPRESSOR EVAPORATOR CAPILLARY TUBE CONDENSER DISCHARGE LINE PINCH PIPE (SERVICE VALVE) 7-2 Basic Structure 7-2-1 Micom Control Diagram A/D converter • Swing motor control • Compressor control • Buzzer control • Temperature control • Fan motor control Reset Circuit Led display control Remocon Single Receiving Operation Swing Timer Sleep Fan speed (high) Fan speed (med) Fan speed (low) Fan Cool Energy saver Temp.setting(↑) Temp.setting(↓) Compressor Fan motor Power circuit (DC 5V) Oscillation Circuit Membrane Pad control • Energe saver • Temp.set(↑, ↓) • Operation, Mode • Swing, Sleep • Fan select, Timer • Remocon single control MAIN MICOM (Remote Control) Room Temperature sensor Receiving Unit of Remocon Swing motor Powercircuit (DC 12V) Down Trans (AC15V) Power input (AC230V) (Key operation) (Remocon control)

KS88C4716 GRID5 SEG-DATA(d) SEG-DATA(e) SEG-DATA(f) SEG-DATA(g) SEG-DATA(h) SEG-DATA(a) EEPROM CLK EEPROM IN EEPROM OUT BUZZER OPTION JIG OUTPUT OPTION SENSOR THERMISTOR(103AT) OPTION OPTION OPTION OPTION SAVE OPTION SWING MOTOR GND SEG-DATA(c) SEG-DATA(b) GRID4 GRID3 Vcc Vss 10MHz RESONATOR 10MHz RESONATOR TEST GRID2 GRDI1 RESET IC OUTPUT KEY-IN1 KEY-IN2 REMOCON EEPROM CS LOW FAN COMPERSSOR MIDDLE FAN HIGH FAN 4-WAY VALVE Vcc 1 P0.1 P4.4 44 2 P0.0 P0.2 43 3 P4.3 P0.3 42 4 P4.2 P0.4 41 5 VDD P0.5 40 6 VSS P0.6 39 7 Xout P0.7 38 8 Xin P1.0 37 9 TEST P1.1 36 10 P4.1 P1.2 35 11 P4.0 P1.3 34 12 RESET P1.4 33 13 P2.0 P1.5 32 14 P2.1 P3.7 31 15 P2.2 P3.6 30 16 P2.3 P3.5 29 17 P2.4 P3.4 28 18 P2.5 P3.3 27 19 P2.6 P3.2 26 20 P2.7 P3.1 25 21 P4.5 P3.0 24 22 AVref AVss 23

NO. CODE-NO DESCRIPTION SPECIFICATION Q’TY REMAKRS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 - 1405-000147 DE13-20017A DE13-20009A DE13-20016A DE13-20008A DE60-10100A DE62-30031A - - - - - - 3711-003407 - - DE32-10037A - DE30-20016A 2001-001172 - - - - - DB93-00407B - - - 2004-001137 2004-000218 - - - - - - - - - DB09-00091A 3501-001058 2802-000103 DB07-00010A 3501-000399 DIODE-RECTIFIER VARISTOR IC-DRIVE IC IC-VOLT REGU IC-VOLT REGU SCREW TAPPING HEAT SINK C-AL C-AL C-AL C-AL CONNECTOR WAFER CONNECTOR WAFER CONNECTOR WAFER CONNECTOR WAFER CONNECTOR WAFER FUSE FUSE HOLDER BUZZER R-CARBON REMOCON MODULE CONNECTOR WAFER JUMPER WIRE JUMPER WIRE JUMPER WIRE PCB-MAIN R-CARBON R-CARBON(2012) R-CARBON(2012) R-CARBON R-CARBON R-CARBON(2012) R-CARBON(2012) C-CERAMIC(2012) C-CERAMIC(2012) C-CERAMIC(2012) C-CERAMIC(2012) TRANSISTOR TRANSISTOR DIODE-SWITCHING(SMALL) IC-MCU RELAY-POWER CERAMIC RESONATOR LED DISPLAY RELAY 1T4 470V 4500A KID65003AP KA7533Z KA7805A KA7812A PH-3 L6 A6063 L23.5 W30 2200µF 25V 1000µF 35V 100µF 10V 22µF 16V YW396-03AV YEL YW396-03AV WHT YW396-05AV WHT JSW250-02 RED JSW250-03 RED 250V 3.15A FB 58 20MM CSB2220BA 620 OHM 1/2W KSM713TE5 FCZ254-08S PI0.6 52MM PI0.6 52MM 3216 TYPE FR-1 81.5*134.5 RD 1/4W 180-J MCR10 330-J MCR10 10K-J RD 1/8W 6.8K-F RD 1/8W 10K-F MCR10 1K-J MCR 100K-J MCR21 2F 104Z MCR21 2F 223Z MCR21 2F 101Z MCR21 2F 102Z KRA226S KRC246S 1N4148 KS88C4716 ID 1U 10MHz ELF-316GWB JQ1A 12V 4 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 24 1 7 1 8 5 10 1 2 2 1 9 4 1 3 5 1 5 1 1 1 1 4 D101~D104 VA71 IC03, IC07 IC05 IC02 IC01 C102 C101 C103 C104 CN11 CN71 CN73 CN41 CN12 F701 F701 BZ61 R601 RM41 CN91 J1~J13, J15~J24, J32 OP01 J25~J31 R903~R910 R404~R406, R415, R902 R301, R407, R408, R410~R414, R501, R901 R403 R401, R402 R201, R202 R409 C105, C106, C401~C406, C410 C501, C502, C601, C901 C407 C408, C409, C902 Q901~Q905 Q906 D901~D905 IC04 RY71 X501 RY72, 73, 75, 76

10. Schematic Diagrams No. Resistor Temp. Unit R411 10K-J ˚C 4.7K-J ˚F OPTION

(KEY NAME) K29 : SAVE K37 : TIMER K39 : SLEEP K41 : AIR SWING K49 : TEMP. (↓) K50 : TEMP. (↑) K53 : LOW FAN K54 : MID FAN K55 : HIGH FAN K57 : FAN K60 : COOL K63 : ON/OFF

Application date Page Part# Note(Cause & Solution) S/Bulletin# Use this page to keep any special servicing information. (Service Bulletin, etc.) If only parts number changes, Just change parts number directly on parts list. And if you need more information, please see the service website. Itself Solution Integrated technology supporting electronic library http://itself.sec.samsung.co.kr Copyright © 2002 By Samsung Electronics Co., Ltd. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable from without prior written permission of Samsung Electronics Co., Ltd. Printed in Korea.