SPLIT-TYPE AIR CONDITIONER
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1 SPLIT-TYPE AIR CONDITIONER INDOOR UNIT Basic : AQB09JJWC AQB12JJWC Model : AQV09JA AQV12JA Model Code : AQV09JA AQV12JA OUTDOOR UNIT AQV09JAX AQV12JAX AIR CONDITIONER THE FEATURE OF PRODUCT High Energy Efficiency BLDC Air Conditioner Simple Flat Grille Design AQV09JA, AQV12JA good sleep Mode : good sleep Mode can help you sleep quickly and soundly and wake up refreshed. Multi Functional Cleaning System : Silver Nano Health System and Deodorizing/ Catechin Filter are adopted. Silence Mode : When you use the "Silence Mode", you can experience extremely quiet operation of your air conditioner. AQV09JAX, AQV12JAX Refer to the service manual in the GSPN(see the rear cover) for the more information.
2 Operating Instructions and Installation Contents 11. Precautions Installing the air conditioner Power supply and circuit breaker During operation Disposing of the unit Others Product Specifications The Feature of Product Product Specifications The Comparative Specifications of Product Accessory and Option Specifications Alignment and Adjustments Test Mode Indoor Display Error and Check Method Outdoor LED Error Display and Check Method Setting Option Setup Method Disassembly and Reassembly Indoor Unit Outdoor Unit Exploded Views and Parts List Indoor Unit Outdoor Unit Ass y Control In Ass y Control Out Wiring Diagram Indoor Unit Outdoor Unit Schematic Diagram Indoor Unit Outdoor Unit
3 Operating Instructions and Installation Contents 18. Circuit Descriptions PCB Circuit Descriptions Refrigerating Cycle Diagram PCB Diagram Indoor PCB Outdoor Inverter PCB Outdoor Main PCB Operating Instructions Name of Each Part Wireless Remote Control-Buttons and Display Main Function Troubleshooting Items to be checked first Fault Diagnosis by Symptom PCB Inspection Method Main Part Inspection Method Block Diagram Indoor Unit Outdoor Unit Reference Sheet Index for Model Name Low Refrigerant Pressure Distribution Pressure & Capacity mark Q & A for n-trouble Cleaning/Filter Change Installation Installation Diagram of Indoor Unit and Outdoor Unit
4 1. Precautions 1-1 Installing the air conditioner Users should not install the air conditioner by themselves. Ask the dealer or authorized company to install the air conditioner except the window-type air conditioner in U.S.A and Canada. If you don t install the air conditioner properly, it may cause a fire, a water leakage or an electric shock. You must install the air conditioner according to the national wiring regulations and safety regulations. Install the indoor unit higher than 8.2ft(2.5m) from the floor to avoid the injury caused by the operation of the fan. (except the window-type air conditioner) The manufacturer is not responsible for any accidents or injury caused by an incorrect installation. When installing the built-in type air conditioner, keep all electric cables such as the power cable and the connection cord in pipes, ducts, or cable channels to protect them from the danger of impact or any other incidents. 1-2 Power supply and circuit breaker If the power cord of the air conditioner is damaged, it must be replaced by the manufacturer or a qualified person in order to avoid a hazard. The air conditioner must be plugged into an independent circuit if applicable or connect the power cable to the auxiliary circuit breaker. An all pole disconnection from the power supply must be incorporated in the fixed wiring with a contact opening of >0.12inch(3mm). Do not extend an electric cord to the air conditioner. The air conditioner must be plugged in after you complete the installation. 1-3 During operation Do not repair the air conditioner at your discretion. It is recommended to contact a service center directly. Never spill any kind of liquid on the air conditioner. If this happens, turn off the air conditioner and contact an authorized service center. Do not insert anything between the airflow blades to prevent damage of the inner fan and consequent injury. Keep children away from the air conditioner. Do not place any obstacles in front of the air conditioner. Do not spray any kind of liquid into the indoor unit. If this happens, turn off the air conditioner and contact a service center. Make sure that the air conditioner is well ventilated at all times: Do not place a cloth or other materials over it. Remove the batteries if you don t use the remote control for a long time. (If applicable) Use the remote control within 23ft(7m) from the indoor unit. (If applicable) 1-1
5 1-4 Disposing of the unit Before throwing out the air conditioner, remove the batteries from the remote control. When you dispose of the air conditioner, consult your dealer. If pipes are removed incorrectly, refrigerant may blow out and cause air pollution. When it contacts with your skin, it can cause skin injury. The package of the air conditioner should be recycled or disposed of properly for environmental reasons. 1-5 Others Never store or load the air conditioner upside down or sideways to prevent the damage to the compressor. Young children or infirm persons should be always supervised when they use the air conditioner. Max current is measured according to IEC standard for safety. Current is measured according to ISO standard for energy efficiency. 1-2
6 2. Product Specifications 2-1 The Feature of Product High Energy Efficiency BLDC Air Conditioner BLDC Technique arises the efficiency of air conditioner and makes a room cool and warm with high energy saving. Simple Flat Grille Design With a Smart and fashionable style, the high impressive interior design allow this product to set place in anywhere. good sleep Mode good sleep Mode can help you sleep quickly and soundly and wake up refreshed. Multi functional cleaning system With Silver Nano Health System and Deodorizing/Catechin Filters makes your room more refreshed. Silence Mode When you use the Silence Mode, you can experience extremely quiet operation of your air conditioner. 2-1
7 2-2 Product Specifications Model AQV09JA AQV12JA Item Indoor Unit Outdoor Unit Indoor Unit Outdoor Unit Type Wall-mounted Wall-mounted Capacity Cooling Btu/hr 3,100 / 9,000 / 11,900 3,100 / 12,000 / 14,300 Heating (Low / Std / Max) 3,100 / 12,000 / 16,500 3,100 / 13,600 / 17,500 Running Frequency Cooling Hz 20 / 49 / / 72 / 90 Heating (Low / Std / Max) 20 / 70 / / 78 / 102 Dehumidifying Pints/hr Performance Air Volume Cooling m3/min 9.5/8.5/ /8.5/ Heating (H/M/L) 9.9/8.5/ /8.9/ ise Cooling db 41/ /25 53 Heating (H/L) 41/ /25 53 SEER Cooling (Std) HSPF Heating Power ph-v-hz 1-208/ / Power Consumtion Cooling W 230 / 650 / 1, / 1,050 / 1,450 Heating (Low / Std / Max) 220 / 950 / 1, / 1,130 / 1,550 Operating Current Cooling A 1.6 / 3.0 / / 4.9 / 6.9 Heating (Low / Std / Max) 1.35 / 4.4 / / 5.3 / 6.9 Power Cooling % 70 / 85 / / 90 /95 Power Factor Heating (Low / Std / Max) 70 / 85 / / 90 /95 Breaker Size A MCA MOP Outer Dimension Width x Height inch 32.5 X 11.2 X X 21.6 X X 11.2 X X 21.6 X 10.4 x Depth mm 825 X 285 X X 548 X X 285 X X 548 X 265 Size Weight (Net) lb kg Drain Hose D(inch) x L(ft) Φ0.7 x 1.8 Φ0.7 x 1.8 D(mm) x L(mm) Φ18 x 550 Φ18 x 550 Type Rotary, G4C090LUBER Rotary, G4C090LUBER Type Hermetic Hermetic Motor Compressor Rated Output W 853W 853W Oil Type FREOLα68ES-T FREOLα68ES-T RLA A Type Cross-flow Propeller Cross-flow Propeller Blower Type Resin / Steel, AC Resin / Steel, DC Resin / Steel, AC Resin / Steel, DC Motor Rated Output W FLA 0.17A 35W 0.10A 31W 0.17A 35W 0.10A 31W Maximum Spec. Length ft (m) 49.2 (15) 49.2 (15) Height ft (m) 26.2 (8) 26.2 (8) OD(inch) x L(ft) Φ1/4 x 24.6 Φ1/4 x 24.6 Piping Liquid OD(mm) x L(m) Φ6.35 x 7.5 Φ6.35 x 7.5 Refrigerant Pipe OD(inch) x L(ft) Φ3/8 x 24.6 Φ3/8 x 24.6 Gas OD(mm) x L(m) Φ9.52 x 7.5 Φ9.52 x 7.5 Heat Exchanger 2 Row 14 Step 2 Row 24 Step 2 Row 14 Step 2 Row 24 Step Refrigerant Control Unit EEV EEV Freezer Oil Capacity gal cc Refrigerant to be Charged (R410A) oz g Refrigerant to be Added (R410A) oz/ft Chargeless Chargeless g/m Chargeless Chargeless Protection Device (OLP) ne ne Cooling Test Condition Indoor Unit : DB80 F WB67 F Outdoor Unit : DB95 F WB75 F Indoor Unit : DB26.7 C WB19.4 C Outdoor Unit : DB35 C WB23.9 C Heating Test Condition Indoor Unit : DB70 F WB60 F Outdoor Unit : DB47 F WB43 F Indoor Unit : DB21.1 C WB15.6 C Outdoor Unit : DB8.3 C WB6.1 C Operation conditon range cooling indoor 61 F to 90 F approx. 61 F to 90 F approx. 16 C to 32 C approx. 16 C to 32 C approx. Outdoor 14 F to 115 F approx. 14 F to 115 F approx. -10 C to 46 C approx. -10 C to 46 C approx. heating indoor 80 F or less 80 F or less 27 C or less 27 C or less Outdoor 5 F to 75 F approx. 5 F to 75 F approx. -15 C to 24 C approx. -15 C to 24 C approx. 2-2
8 2-3 The Comparative Specifications of Product Item Development Model AQV09JA AQV12JA Comparative Model AQB09JJWC AQB12JJWC Indoor Unit Design Outdoor Unit Indoor Unit 20.0lb (9.0kg) 20.0lb (9.0kg) Net Weight Outdoor Unit 74.0lb (33.5kg) 78lb (35.5kg) Indoor Unit 32.5 X 11.2 X 7.4 (inch) 825 X 285 X 189 (mm) 32.5 X 11.2 X 7.4 (inch) 825 X 285 X 189 (mm) Outer Dimension Outdoor Unit 28.3 X 21.6 X 10.4 (inch) 720 X 548 X 265 (mm) 31.1 X 21.6 X 11.2 (inch) 790 X 548 X 285 (mm) ise Indoor Unit Outdoor Unit AQV09J* : 41dB (Silence : 25dB ) AQV12J* : 43dB (Silence : 25dB ) AQV09J* : 51dB AQV12J* : 53dB AQB09J* : 41dB (Silence : 28dB ) AQB12J* : 43dB (Silence : 28dB ) AQB09J* : 51dB AQB12J* : 53dB Air Purifying System Filter Silver Nano Coated Evaporator Bio Filter Deodorizing Fiter Silver Nano Coated Evaporator Bio Filter Deodorizing Fiter Indoor Display 3 LED Display 3 LED Display 2-3
9 Geteilte raumklimaanlage Geteilte raumklimaanlage Geteilte raumklimaanlage 2-4 Accessory and Option Specifications Accessories Item Descriptions Code-. Q'TY Remark Ass'y Plate Hanger DB B 1 Remote Control DB N 1 Batteries for Remote Control DB A 2 Indoor Unit OWNER'SINSTRUCTIONS MANUALDEINSTRUCCIONES ISTRUZIONIPERL'USO MANUALDEINSTRU ÍES MANUELD'UTILISATION GEBRAUCHSANWEISUNG Splut-type Room Air Conditioner Aire acondicionadodomžsticosistemasplit Condizionatored'ariaperambientiadunitˆSeparate Aparelho de ar condicionadotiposplit ClimatiseurdetypesŽparŽ User s Manual DB A 1 OWNER'SINSTRUCTIONS MANUALDEINSTRUCCIONES ISTRUZIONIPERL'USO MANUALDEINSTRU ÍES MANUELD'UTILISATION GEBRAUCHSANWEISUNG Splut-type Room Air Conditioner Aire acondicionadodomžsticosistemasplit Condizionatored'ariaperambientiadunitˆSeparate Aparelho de ar condicionadotiposplit ClimatiseurdetypesŽparŽ Installation Manual DB A 1 OWNER'SINSTRUCTIONS MANUALDEINSTRUCCIONES ISTRUZIONIPERL'USO MANUALDEINSTRU ÍES MANUELD'UTILISATION GEBRAUCHSANWEISUNG Splut-type Room Air Conditioner Aire acondicionadodomžsticosistemasplit Condizionatored'ariaperambientiadunitˆSeparate Aparelho de ar condicionadotiposplit ClimatiseurdetypesŽparŽ Service Manual DB A 1 Drain Plug DB A 1 Outdoor Unit Rubber Leg DB A 4 2-4
10 3. Alignment and Adjustments 3-1 Test Mode 1. How to Operate Test Mode Press the Power button of indoor unit for 5 seconds (Cooling test operation). Or press the K1 switch of the display board once (Cooling test operation) or twice (Heating test operation) after removing the Cover Control of outdoor unit. The Unit operates Test Mode for sixty minutes. on/off switch 2. How to Check the Unit on Test Mode Please check the three LED and Error Mode Display. Please check the low pressure as connecting a manifold gauge with the service valve. 3. How to Quit Test Mode Press the power button of indoor unit once again Or press the K1 switch of display board three times again. * After the test operation is finished, you cannot retry the test operation without power reset. * The blade places to set position and then the indoor fan operates. * The Compressor is operated by rated frequency before sixty minutes or enforced stop. 3-1
11 3-2 Indoor Display Error and Check Method Description LAMP OPERATION TIMER TURBO Main Checking Point Indoor unit room temperature sensor error (open or short) Indoor unit heat exchanger temperature sensor error (open or short) 3-2P 3-3P Indoor fan motor malfunction 3-4P EEPROM error Option Setting Option error (option wasn t set up or option data error) Option Setting Outdoor unit error Lamp on, Remote Control on/off Outdoor Unit Power Reset Lamp off, Lamp blink 3-2
12 3-3 Outdoor LED Error Display and Check Method. LED Display Yellow Green Red Explanation 1 Power off/ VDD NG 2 IPM Over Current(O.C) 3 Abnormal Serial communication 4 Compressor Starting error 5 rmal Operation 6 Compressor Lock error 7 DC-Link voltage under/over error 8 Outdoor temperature sensor error 9 Discharge over temperature 10 Discharge temperature sensor error 11 Current sensor error 12 Compressor limit error 13 Coil temperature sensor error 14 1min. Time out Communication 15 Fan error 16 OTP error 17 Compressor rotation error 18 Operation condition secession(dual only) 19 DC-Link voltage sensor error 20 I_Trip error / PFC Over current 21 GAS Leak error 22 AC Line Zero Cross Signal out 23 Power ON reset(1sec) 24 Capacity miss match 25 Test Operation at Cooling Mode 26 Test Operation at Heating Mode LED ON, LED OFF, LED BLINK 3-3
13 3-4 Setting Option Setup Method ex) Option. : Step 1 : Enter the Option Setup mode. 1 st Take out the batteries of remote control. 2 nd Press the temperature button simultaneously and insert the battery again. 3 rd Make sure the remocon display shown as. Step 2 : Enter the Option Setup mode and select your option according to the following procedure. 1 Feature Setting Option SEG1. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. Display 2 Setting Option SEG2. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 3 Change it into the set display of Option SEG3 and SEG4 with the button. 4 Setting Option SEG3. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 5 Setting Option SEG4. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 3-4
14 Alignment and Adjustments 6 Feature Change it into the set display of Option SEG5 and SEG6 with the button. Display 7 Setting Option SEG5. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 8 Setting Option SEG6. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 9 Change it into the set display of Option SEG7 and SEG8 with the button. 10 Setting Option SEG7. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 11 Setting Option SEG8. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 12 Change it into the set display of Option SEG9 and SEG10 with the button. 13 Setting Option SEG9. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 14 Setting Option SEG10. Push the button to set the display panel to. Every time you push the button, the display panel reads... repeatedly. 3-5
15 Alignment Operating Instructions and Adjustments and Installation Step 3 : Upon completion of the selection, check you made right selections. Whenever you press the button, the set Option will be displayed. Step 4 : Pressing the ON/OFF button ( ) When pressing the operation ON/OFF key with the direction of remote control for unit, the sound "Ding" is heard and the OPERATION LED lamp is flickering at the same time, then the input of option is completed. (If the "ding" sound isn't heard, try again pressing the ON/OFF button.) Step 5 : Unit operation test-run First, Remove the battery from the remote control. Second, Re-insert the battery into the remote control. Third, Press ON/OFF ( ) key with the direction of remote control for set. Error Mode 1 st If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry. 2 nd If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model. OPTION ITEMS MODEL REMOCON SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 AQV09JA 0 8 C F 2 4 C AQV12JA 0 9 C F 2 5 D 3-6
16 4. Disassembly and Reassembly Necessary Tools Item Remark +SCREW DRIVER MONKEY SPANNER 4-1
17 4-1 Indoor Unit Parts Procedure Remark 1 Front Grille 1) Stop the air conditioner operation and shut off the main power. 2) Open the Front Grille by pulling right and left sides of the hook. 3) Loosen 1 of the right screw(ccw) and detach the Terminal Cover. (Use +Screw Driver.) 4) Detach the thermistor from the Front Grille. 5) Loosen 2 fixing screws(ccw) of Front Grille. 6) Unlock 3 hooks to fix Panel Front and Tray Drain. (Use +Screw Driver.) 4-2
18 Disassembly and Reassembly Parts Procedure Remark 7) Unlock 3 hooks to fix Panel Front and Back-Body. 2 Control-In (Main PCB) 1) Take all the connector of PCB upper side out. (Inclusion Power Cord) 2) Detach the outdoor unit connection wire from the Terminal Block. 3) Loosen 4 fixing screws(ccw) of Ass'y Control-In. (Use +Screw Driver.) You can disassembly Ass'y Control In without evaporator disassembled. 3 Tray Drain 1) Pull Tray Drain out from the Back Body. 4-3
19 Disassembly and Reassembly Parts Procedure Remark 4 Heat Exchanger 1) Loosen 2 fixing earth screws(ccw) of right side. (Use +Screw Driver.) 2) Detach the Connection Pipe. 3) Detach the Holder Pipe at the rear side. 4) Loosen the 4 fixing screws(ccw) of right and left side. (Use +Screw Driver.) 5) Lifting the Heat Exchanger up a little to push the up side for separation from the indoor unit. First, check Comp. Down and then disconnect the connection pipes before you disassemble the Evaporator from indoor unit. 5 Fan Motor & Cross Fan 1) Loosen the fixing screw(ccw). (Use +Screw Driver.) 2) Detach the Fan Motor from the Fan. 3) Detach the Fan From the left Holder Bearing. 4-4
20 4-2 Outdoor Unit Parts Procedure Remark 1 Common Work 1) Loosen 1 fixing screw(ccw) of the Cover-Side. (Use +Screw Driver.) 2) Loosen each 4 screws(ccw) on both right and left Cabinet Side edges and a fixing screw on the Cabinet Front lower to detach the Cabinet Front. (Use +Screw Driver.) 3) Detach the Cabinet Front like the picture on the right side. 4) Loosen 1 screw(ccw) fixed to assemble Plate Control Out with Cabinet-Side RH. (Use +Screw Driver.) 4-5
21 Disassembly and Reassembly Parts Procedure Remark 5) Loosen 2 fixing screws(ccw) on the rear side of Cabinet-Side RH. (Use +Screw Driver.) 6) Loosen 3 screws(ccw) fixed to assemble Bracket Valve with Cabinet-Side RH. (Use +Screw Driver.) 7) Loosen 2 fixing screws(ccw) of Cabinet Side LF. (Use +Screw Driver.) 4-6
22 Disassembly and Reassembly Parts 2 Ass'y Control Out Procedure Remark 1) Detach the Motor Wire from the PCB of Ass'y Control Out. 2) Detach several connectors from the PCB of Ass'y Control Out. 3) Detach 2 Connect Wires from Reactor. 4) Loosen 1 screw(ccw) fixed to assemble Ass'y Control Out with Partition. (Use +Screw Driver.) 4-7
23 Disassembly and Reassembly Parts Procedure 3 Fan & Motor 1) Release the refrigerant at first. 2) Loosen fixing screw(cw). (Use Monkey Spanner.) 3) Disassemble the pipes in both inlet and outlet with welding torch. 4) Detach the Heat Exchanger. 4 Heat Exchanger 1) Loosen 2 fixing screws(ccw) on both sides. (Use +Screw Driver.) 2) Disassemble the pipes in both inlet and outlet with welding torch. 3) Detach the Heat Exchanger. Remark Before you disassemble the pipes and Condenser, be sure that there should be no refrigerant remained in the unit. 5 Ass'y Valve 4-Way & Ass'y Valve EEV 1) Loosen 4 bolts(ccw) fixed to assemble Valve Service with Bracket Valve like the picture on the right side. (Use Monkey Spanner.) 2) Disassemble the pipes assembled the suction and discharge sides of the Compressor with welding torch. 6 Compressor 1) Loosen the Nut(CCW) of Terminal Cover. (Use Monkey Spanner.) 2) Detach the Terminal Cover and detach the Connect Comp Wire from Compressor. 3) Disassemble the Felt Comp Sound. 4) Loosen the 3 bolts(ccw) at the bottom of Compressor like the picture on the right side. (Use Monkey Spanner.) 4-8
24 MEMO 4-9
25 5. Exploded Views and Parts List 5-1 Indoor Unit 5-1
26 Exploded Views and Parts List Parts List. Code. Description Specification AQV09JA Q'TY AQV12JA SA/SNA 1 DB H ASS Y-BACK BODY ASS Y 1 1 SA 1-1 DB D BACK-BODY HIPS 1 1 SNA 1-2 DB A CUSHION-BACK BODY EPS 1 1 SA 1-3 DB A ASSY EVAP SUPPORT RH ASS Y 1 1 SNA 1-4 DB A MOTOR-IN V~, 50/60Hz, Class E 1 1 SA 1-5 DB A ASS Y-CROSS FAN OD92x SA 1-6 DB A ASS Y-BOLT SPECIAL ASS Y 1 1 SNA 1-7 DB A RUBBER-BEARING RUBBER 1 1 SNA 1-8 DB A MOLD-BEARING BEARING 1 1 SA 2 DB A ASS Y EVAP TOTAL ASS Y 1 1 SNA 2-1 DB A COVER-BEARING ABS 1 1 SNA 2-3 DB F ASS Y-EVAP 1.3S,2x SA 3 DB D ASS Y-TRAY DRAIN ASS Y 1 1 SA 3-1 DB A TRAY-DRAIN ABS 1 1 SNA 3-2 DB C BLADE-H HIPS 1 1 SA 3-3 DB A BLADE-V PP 2 2 SA 3-4 DB A TRAY-STABILIZER ABS 1 1 SNA 3-5 DB A CUSHION EPS-TRAY-RH EPS SA 3-6 DB A RUBBER-CAP DRAIN GUM-EPM 1 1 SNA 3-7 DB A ASS Y-MOTOR STEPPING V~, 50/60Hz, Class E 1 1 SA 3-8 DB B ASS Y DRAIN-HOSE ASS Y 1 1 SA 4 DB A ASS Y CONTROL-IN ASS Y 1 1 SA 5 DB R ASS Y PANEL FRONT ASS Y 1 1 SA 5-1 DB E PANEL FRONT HIPS 1 1 SA 5-2 DB B GRILLE PANEL D HIPS 1 1 SA 5-3 DB A ASS Y COVER-DISPLAY ASS Y 1 1 SA 5-4 DB B GUARD-AIR FILTER PP 2 2 SA 5-5 DB C GRILLE INLET HIPS 1 1 SA 6 DB B ASSY PLATE HANGER SGCC-M 1 1 SNA 7 DB B HOLDER-PIPE PS 1 1 SNA 8 DB E COVER TERMINAL ABS 5V 1 1 SA 9 DB N ASS Y REMOCON ARH SA 5-2
27 5-2 Outdoor Unit 5-3
28 Exploded Views and Parts List Parts List Q TY. Code. Description Specification AQV09JA AQV12JA SA/SNA 1 DB G ASS Y CABI FRONT ASS Y, SC-94445T 1 1 SA 2 DB C GUARD FAN PP, UL746C 1 1 SA 3 DB L ASS Y BASE OUT ASS Y, SC-94445T 1 1 SA 4 DB A ASS Y BRACKET VALVE ASS Y, SC-94445T 1 1 SA 5 DB A FAN-PROPELLER AS+G/F20%, Φ SA 6 DB A SCREW MACHINE M6 1 1 SA 7 DB A SCREW SPECIAL M4 4 4 SNA 8 DB A MOTOR FAN OUT DC Motor, SIC-52FV-F SA 9 DB A BRACKET MOTOR SGCC-M 1 1 SA 10 DB A ASS Y SUPPORT PLATE B/M SGCC-M 1 1 SA 11 DB A ASS Y PARTITION ASS Y, SGCC-M 1 1 SA 12 DB A REACTOR PPS,5mH, 10A 1 1 SA 13 DB B ASS Y COND UNIT ASS Y 1 1 SA 14 DB A ASS Y COVER CONTROL ASS Y 1 1 SA 15 DB A ASS Y CABINET SIDE RH ASS Y, SC-94445T 1 1 SA 16 DB A ASS Y CABINET SIDE LF ASS Y, SC-94445T 1 1 SA 16-1 DB A CABINET SIDE LF SECC-P, SC-94445T 1 1 SA 16-2 DB A HANDLE LF PP 1 1 SA 17 G4C090LUBER COMPRESSOR ROTARY, BLDC 1 1 SNA 17-1 DB A GROMMET ISOLATOR NR 3 3 SNA 17-2 DB A SCREW HEX M8 3 3 SNA 17-3 DB A SCREW MACHINE M5 1 1 SNA 17-4 DB A COVER TERMINAL PBT (G/F 15%) 1 1 SNA 17-5 DB A GASKET EPDM 1 1 SNA 18 DB A FELT COMP SIDE FELT+PVC Sheet 1 1 SA 19 DB A FELT COMP BASE FELT+PVC Sheet 1 1 SA 20 DB A FELT COMP UPPER FELT+PVC Sheet 1 1 SA 21 DB A ASS'Y VALVE 4WAY ASS'Y 1 1 SA 21-1 DB A 4WAY VALVE R410A, SANHUA 1 1 SNA 21-2 DB A VALVE SERVICE R410A, SANHUA, 3/8" 1 1 SNA 22 DB A ASS'Y VALVE EEV ASS'Y 1 1 SA 22-1 DB A VALVE EXPANSION COIL FUJIKOKI, Φ SNA 22-2 DB A VALVE EXPANSION BODY FUJIKOKI, Φ SNA 22-3 DB A VALVE SERVICE R410A, SANHUA, 1/4" 1 1 SNA 23 DB A ASS'Y CONTROL OUT ASS'Y - 1 SA DB B ASS'Y CONTROL OUT ASS'Y 1 - SA 24 DB C GUIDE SCREEN P.E.H 100% 1 1 SA 25 DB D THERMISTOR OUT/DIS ASS Y 1 1 SA 26 DB B THERMISTOR COND ASS Y 1 1 SA 27 DB A CONNECT WIRE COMP ASS Y 1 1 SA 5-4
29 5-3 Ass'y Control In : DB A Parts List. Code. Description Specification Q'TY SA/SNA 1 DB C CASE-CONTROL IN ABS 5V 1 SNA 2 DB D ASS Y-MAIN PCB PCB 1 SA 3 DB U TERMINAL BLOCK DAF-4P 1 SNA 4 DB A ASS Y-S/W & DISPLAY PCB ASS Y 1 SNA 5 DB A PLATE CONTROL IN SGCC-M,T1.2 1 SNA 6 DB A HOLDER-WIRE CLAMP ABS 1 SA SCREW-MACHINE PH M3xL22 1 SNA SCREW-MACHINE TH M4xL10 3 SNA 9 DB A CONNECT WIRE MOTOR ASS Y 1 SNA 10 DB A ASS Y-THERMISTOR 4P(103AT) 1 SA 11 DB A COVER LAMP ABS(V0) 1 SNA 12 DB B RUBBER-BAND RUBBER 1 SNA 13 DB T CONNECT WIRE-L BRN 1 SNA 14 DB A CONNECT WIRE-N SKYBLU,3P 1 SNA 15 DB B CONNECT WIRE-COMM RED/BLU 1 SNA 16 DB A LABEL CAUTION TETRON25 1 SNA 17 DB A C/W DISPLAY PCB DISPLAY 1 SNA 18 DB A ASSY PCB SUB-485 PCB 1 SA 5-5
30 5-4 Ass'y Control Out AQV09JAX : DB B AQV12JAX : DB A 5-6
31 Exploded Views and Parts List Parts List. Code. Description Specification AQV09JAX Q'TY AQV12JAX SA/SNA Remark 1 DB B CASE CONTROL COVER ABS 5V, GRAY 1 1 SA 2 DB A SEAL CASE CONTROL COVER FOAM LEX T2(WHITE) 1 1 SNA SCREW TAPPING M3xL8 PH+ ZPC(YEL) 3 3 SNA 4 DB A ASS Y SCREW-MACHINE M3x16 WSP PH+ 5 5 SNA 5 DB B ASS Y PCB INV FR4 160x SA DB A ASS Y PCB INV FR4 160x140-1 SA 6 DB A HEAT SINK 140x50x45mm, 11FIN 1 1 SA SCREW TAPPING PH,+,2S,M4,L SNA 8 DB A ASS Y PCB EMI FR-1 139x SA 9 DB A ASS PCB MAIN FR4 125x SA 10 DB B CASE CONTROL BASE ABS 5V, T SA 11 DB A PLATE CONTROL OUT SGCC-M T SA 12 DB P SEAL CASE CONTROL BASE FOAM PU(BLACK) 1 1 SNA SCREW TAPPING M4xL25 PH+ ZPC(YEL) 1 1 SNA 14 DB C TERMINAL BLOCK DAF-6P 1 1 SA 15 DB A ASS Y PCB DISPLAY FR-1 35x SA 16 DB A CASE DISPLAY PCB ABS V0,T SA 17 DB B INSULATOR MICA 1 1 SNA 18 DB B CONNECT WIRE DISPLAY FOR DISPLAY, 5P 1 1 SA 19 DB A LEAD CONNECTOR-N SKYBLU 1 1 SNA 20 DB B LEAD CONNECTOR-L BRN 1 1 SNA SCREW SPECIAL SCREW EARTH 1 1 SNA 22 DB D CABLE TIE NYLON SNA 5-7
32 6. Wiring Diagram 6-1 Indoor Unit This Document can not be used without Samsung s authorization. 6-1
33 6-2 Outdoor Unit This Document can not be used without Samsung s authorization. 6-2
34 7. Schematic Diagram 7-1 Indoor Unit This Document can not be used without Samsung s authorization. 7-1
35 7-2 Outdoor Unit Inverter This Document can not be used without Samsung s authorization. 7-2
36 Main 7-3
37 MEMO 7-4
38 8. Circuit Descriptions 8-1 PCB Circuit Descriptions Indoor Unit SMPS PART INDOOR FAN CONTROL ZERO CROSSING PART INDOOR TEMPERATURE SENSOR MPI PART BUZZER PART SUB PCB CONNECTOR DISPLAY PART STEP MOTOR & ION HUMID PART This Document can not be used without Samsung s authorization. 8-1
39 Circuit Descriptions Circuit Descriptions Outdoor Unit Main Inverter BLDC FAN INVERTER PFC SMPS MICOM COMMUNICATION TEMPERATURE SENSOR & EEV 485 COMMUNICATION This Document can not be used without Samsung s authorization. 8-2
40 8-2 Refrigerating Cycle Diagram Indoor Unit Outdoor Unit 2 way valve Liquid side Expansion valve Capillary tube Heat Exchanger (Evaporator) Cross Fan Heat Exchanger (Condenser) Propeller Fan Gas side 3 way valve 4 way valve Compressor Cooling Heating Gas Leak Check Point 8-3
41 MEMO 8-4
42 9. PCB Diagram 9-1 Indoor PCB The red number connecter is not used Power 7 2 Motor RPM Feedback 8 3 Remocon Module 9 4 Humidity Sensor 10 5 Anions 11 6 MPI 12 Temperature Sensor Auto Grill HVPS(High voltage Generator) BLADE-H Step Motor Display Indoor Fan Motor 9-1
43 9-2 Outdoor Inverter PCB The red number connecter is not used Power N 5 Power Relay 2 Power L 6 Comp. Connector Wire 3 BLDC Fan : YAW396-07V (WHT) 7 Reactor Connector Wire 4 Main PCB Connector : SMW200-07(WHT) 9-2
44 9-3 Outdoor Main PCB Inverter PCB Connector : SMW200-07(WHT) Display PCB Connector : SMW200-05(WHT) OLP/Cond. Temperature Sensor : SMAW250A-04(WHT) Outdoor/Discharge Temperature Sensor : SMAW250A-04(RED) EEV Connector : SMAW250A-06(WHT) DC5V Connector : SMW250-03(WHT) Communication 9-3
45 10. Operating Instructions 10-1 Name of Each Part Indoor Unit Air Inlet Temperature sensor Air filter (under the grille) Air flow blades (outlet) Operation indicator (GREEN) Timer indicator (GREEN) Turbo indicator (RED) On/Off button Air Inlet (Rear) Air Outlet Connection Valve (Inside) 10-1
46 10-2 Wireless Remote Control-Buttons and Display Transmission indicator Temperature and Timer setting Battery life indicator Operation modes indicator ( AUTO, COOL, DRY, FAN, HEAT) Airflow direction Fan speed & Silence indicator 1 Hour Timer indicator On Timer indicator Off Timer indicator Turbo function indicator Sleep mode indicator Energy saving indicator Turbo button Power(On/Off) button 1 Hour Timer button Mode selection button (AUTO, COOL, DRY, FAN, HEAT) Temperature adjustment button Fan speed adjustment button & Silence mode button Airflow control button Energy Saving button Good Sleep button Timer Set/Cancel button On Timer button Battery check button Off Timer button 10-2
47 10-3 Main Function Basic Function Mode Explanation Remark Auto Mode Press the button on the remote control until is displayed. Cool Mode Press the button on the remote control until is displayed. Press the displayed. button to select the fan speed until the required setting is Automatic (rotated : ) Silence mode Low Medium High Maximum Heat Mode Press the button on the remote control until is displayed. Press the displayed. button to select the fan speed until the required setting is Automatic (rotated : ) Silence mode Low Medium High Maximum 10-3
48 Operating Instructions Basic Function(cont.) Mode Explanation Remark Dry Mode Press the button on the remote control until is displayed. Fan Mode Press the button on the remote control until is displayed Applied Function Mode Explanation Remark Turbo Function Press the button. After 30 minutes, the air conditioner is reset automatically to the previous mode, temperature and fan settings. You can select the Turbo function in the Auto, Cool and Heat mode. If you select this function in the Dry or Fan mode, it will return to the Auto mode. good' sleep Mode Press the button until the indicator appears on the remote control. 10-4
49 11. Troubleshooting 11-1 Items to be checked first 1. The input voltage should be rating voltage ±10% range. The air conditioner may not operate properly if the voltage is out of this range. 2. Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 5 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the air conditioner may not operate properly. 3. When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the malfunction of the air conditioner. Operation of air conditioner Explanation 1 The OPERATION indication LED(BLUE) blinks when a power plug of the indoor unit is plugged in for the first time. It indicates power is on. The LED stops blinking if the operation ON/OFF button on the remote control unit is pushed. 2 In a COOL operation mode, the compressor does not operate at a room temperature higher than the setting temperature that the INDOOR FAN should operate. [In case of heat pump model] In a HEAT operation mode, the compressor does not operate at a room temperature lower than the setting temperature that indoor fan should operate. In happens after a delay of 3 minutes when the compressor is reoperated. The same phenomenon occurs when a power is on. As a phenomenon that the compressor is reoperated after a delay of 3 minutes, the indoor fan is adjusted automatically with reference to a temperature of the air blew. 3 Fan speed setting is not allowed in DRY( ) mode. The speed of the indoor fan is set to LL in DRY mode. Fan speed is selected automatically in AUTO mode. 4 Compressor stops operation intermittently in DRY( ) mode. 5 Timer LED(ORANGE) of the indoor unit lights up and the air conditioner does not operate. 6 The compressor stops intermittently in a COOL mode or DRY mode, and fan speed of the indoor unit decreases. 7 [In case of heat pump model] Compressor of the outdoor unit is operating although it is turned off in a HEAT mode. 8 [In case of heat pump model] The compressor and indoor fan stop intermittently in HEAT mode. 9 [In case of heat pump model] Indoor fan and outdoor fan stop operation intermittently in a HEAT mode. Compressor operation is controlled automatically in DRY mode depending on the room temperature and humidity. Timer is being activated and the unit is in ready mode. The unit operates normally if the timer operation is cancelled. The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air frozen depending on the inside/outside air temperature. When the unit is turned off while de-ice is activated, the compressor continues operation for up to 9 minutes(maximum) until the deice is completed. The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from overheated air in a HEAT mode. The compressor operates in a reverse cycle to remove exterior ice in a HEAT mode, and indoor fan and outdoor fan do not operate intermittently for within 20% of the total heater operation 11-1
50 11-2 Fault Diagnosis by Symptom Power (completely dead)-initial diagnosis 1. Checklist : 1) Is input voltage normal? 2) Is AC power linked correctly? 3) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11VDC-12.5VDC) 4) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) 2. Troubleshooting procedure Unplug the power cord and plug it after 30 seconds Press the Power Button on the remote control unit to operate the air conditioner operate Check the display board does not operate Check the indoor unit control board Check whether 2 wires of power cord are connected correctly to the terminal block and control board. Reconnect wires correctly Check whether the fuse on the control board is normal. FUSE(F701) : T3.15[A]/250[V] Replace fuse Check the output of SMPS on the control board. Input power: AC230±15%[V] IC02 Input: DC12[V] IC02 output: DC5[V] PCB should be replaced Check the setting temperature 11-2
51 Troubleshooting The Outdoor unit power supply error 1. Checklist : 1) Are the input power voltage and the power connection correct? 2) Is there no Fuse short in the indoor unit and outdoor unit? 3) Is the cable connected correctly between the indoor unit and outdoor unit in order. 4) Is the wire connected correctly to the terminal block of the indoor unit and outdoor unit? 2. Troubleshooting procedure Is the voltage of indoor unit terminal block 1 and 2 correct after power input? Is the R701 resistance of indoor PCB 200Ω? Exchange the PCB. Is the indoor unit fuse normal? Exchange the fuse. Pull out the power cord and execute the following step after 30 seconds. Is the outdoor unit normal? Exchange the fuse. Is the outdoor unit normal? Is the reactor connected correctly? Connect the reactor wire. Is the +, - of C102 short? Disassemble the PCB from the case. Is there no error at the insertion of PCB? Exchange the PCB. Exchange the PCB. Is the +,- of C102 short? Are the BLDC FAN Wire 1 and 3 short? Exchange the PCB. Exchange the BLDC FAN. rmal Operation Exit 11-3
52 Troubleshooting When the Up/Down Louver Motor Does t Operate. (Initial Diagnosis) 1. Checklist : 1) Is input voltage normal? 2) Is the Up/Down louver motor properly connected with the connector (CN61)? 2. Troubleshooting procedure Unplug the power cord and plug it after 30 seconds Is STD lamp blinking? Check as in the procedure Power. Does operation start when swing button of the remote control unit pushed? rmal Voltage at pin #30~#34 of micom (IC04) change?(squarewave) Micom (IC04) is faulty. Voltage at pin #2 ~ #5 of CN61(motor connector) change?(squarewave) Driver IC05/06 (ULN2003A) is faulty. Up/Down louver motor is faulty. 11-4
53 Troubleshooting The Outdoor unit Fan error 1. Checklist : 1) Are the input power voltage and the power connection correct? 2) Is the motor wire connected to the outdoor PCB correctly? 3) Is there no assembly error or none-assembly in the terminal of motor wire connector? 4) Is there no obstacle at the surrounding of motor and propeller? 2. Troubleshooting procedure Is the Pin voltage of CN01 #1, #3 over 250V? Follow the Check Procedure of outdoor unit power supply error check. Is the Pin voltage of CN01 #3, #5 within 1V~5V during the operation? Does the Pin voltage of IC01(MICOM).13 change?(square-wave) FAN DRIVE CIRCUIT (Q901,Q902 etc.) error Exchange the PCB. Exchange the PCB. MICOM Error Is the Pin voltage of CN01 #6 changed during the operation?(square-wave) Pull out the power cord and execute the following step after 30 seconds. Disassemble the BLDC FAN Wire. Is the short between the BLDC FAN Wires? Exchange the PCB. Exchange the BLDC FAN MOTOR. Exchange the PCB. 11-5
54 Troubleshooting Total current Trip error 1. Checklist : 1) Is the input power voltage proper? 2) Is the refrigerant charged properly? 3) Does the compressor rotate normally? (Reverse rotation, Locking etc.) 4) Dose the outdoor fan operate normally? (Fan propeller loss, Motor error etc.) 5) Is the installation condition of outdoor unit good? (Piping, Space etc.) 6) Is there no ventilation obstruction at the surrounding of outdoor? (Outdoor unit cover, Fan front obstruction etc.) 2. Troubleshooting procedure Is the installation of outdoor unit good? Reinstall and remove the obstruction. Dose the compressor rotate normally? Exchange the compressor. Is the assembly of R418, R413, IC41, C437 and the peripheral part good? Exchange the PCB. Pull out the power cord and exchange the PCB from the case after 30 seconds. Is the assembly of Micom and peripheral circuit part good? Exchange the PCB. Check again after assembly of PCB. 11-6
55 Troubleshooting In case of heating at the cooling mode or cooling at the heating mode 1. Troubleshooting procedure Is the Thermo off? Change the setting temperature of remote control. Is the unit in the defrosting operation? Operate it with a heating mode as soon as the defrosting is finished. Is the compressor in 3 minutes off? After 3 minutes, cooling and heating start automatically. Indoor operation SW is on. Turn the SW On. Is much frost in the heat exchanger? Is the outdoor air sensor and outdoor heat exchanger attached correctly? Attach the sensor correctly. Over shortage of the refrigerant Does the 4 way valve operate normally? Is the 4 way valve connector connected correctly? Connect the connecter correctly. Check the resistance value of 4 way valve coil. NG 4-WAY valve coil error OK Dose the voltage of AC 220V apply to the connector of 4 way valve coil during the operation? Exchange the outdoor PCB. Go to the next page 4 way valve main body error 11-7
56 Troubleshooting In case of heating at the cooling mode or cooling at the heating mode(cont.) From the previous page Does the EEV operate normally? Is much frost in the heat exchanger? Connect the connector. Check the resistance value of EEV coil. NG EEV coil error OK Is much frost in the heat exchanger? Exchange the out PCB. EEV main body error Does the outdoor fan operate at the operation of compressor? The over shortage of refrigerant, Insufficient Capacity, Load estimation error Is the outdoor fan connected correctly? Connect the connector. Check the resistance value of outdoor fan. NG Outdoor fan error OK Dose the voltage of DC300V apply to the connector of outdoor fan during the operation of outdoor unit? Check the motor wire. Outdoor PCB error 11-8
57 Troubleshooting Outdoor temperature sensor error 1. Checklist : 1) Is the sensor connector connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull_up correct? 2. Troubleshooting procedure Is the sensor connector connected correctly in accordance with a color? Reconnect the sensor connector. Is the temperature sensor connected correctly without separation? Change the position of sensor. Does the both terminal of sensor satisfy the resistance value in accordance with temperature? (Refer to the R/T TABLE) Exchange the sensor. Is the resistance value of sensor connection pull_up 18.2K? Exchange the PCB. Exchange the PCB. rmal operation Exit
58 Troubleshooting Discharge temperature sensor error 1. Checklist : 1) Is the sensor connector connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull_up correct? 2. Troubleshooting procedure Is the sensor connector connected correctly in accordance with a color? Reconnect the sensor connector. Is the temperature sensor connected correctly without separation? Change the position of sensor. Does the both terminal of sensor satisfy the resistance value in accordance with temperature? (Refer to the R/T TABLE) Exchange the sensor. Is the resistance value of sensor connection pull_up 24K? Exchange the PCB. Exchange the PCB. rmal operation Exit
59 Troubleshooting Coil temperature sensor error 1. Checklist : 1) Is the sensor connector connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull_up correct? 2. Troubleshooting procedure Is the sensor connector connected correctly in accordance with a color? Reconnect the sensor connector. Is the temperature sensor connected correctly without separation? Change the position of sensor. Does the both terminal of sensor satisfy the resistance value in accordance with temperature? (Refer to the R/T TABLE) Exchange the sensor. Is the resistance value of sensor connection pull_up 18.2K? Exchange the PCB. Exchange the PCB. rmal operation Exit
60 Operating Instructions and Installation Sensor R-T Table (Resistance-Temperature) 1. Discharge Temp. Sensor RESISTANCE : 200.0kΩ at 25 C (77 F) RESISTANCE TOLERANCE : ±5% TEMP.( C) TEMP.( F) MAX (kω) CENTER (kω) MIN (kω)
61 Operating Instructions and Installation Sensor R-T Table (Resistance-Temperature) 2. Outdoor Coil Temp. Sensor, Outdoor Air Temp. Sensor Indoor Coil Temp. Sensor, Indoor Air Temp. Sensor RESISTANCE : 10.0kΩ at 25 C (77 F) RESISTANCE TOLERANCE : ±1% TEMP.( C) TEMP.( F) MAX (kω) CENTER (kω) MIN (kω) TEMP. TOLERANCE. ( F)
62 Troubleshooting Fan error 1. Checklist : 1) Isn t the fan locked? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull_up correct? 2. Troubleshooting procedure Isn't the Fan locked? Remove the Fan lock. Is the connector connected correctly? Connect the connector. Is the color of Fan wire matched correctly? Exchange the Fan. Exchange the PCB. rmal operation Exit 11-14
63 Troubleshooting DC-Link voltage sensor error 1. Checklist : 1) Is the voltage of indoor unit terminal block 1, 2 correct after power supply? 2) Is the capacitor(c101, C102, C103) for DC-Link assembled in accordance the specification? 3) Are R112, R113, R Kohm? 4) Is R Kohm? 2. Troubleshooting procedure Is the voltage of indoor unit terminal block 1, 2 correct after power supply? Apply the troubleshooting for outdoor unit power supply error. Is the capacitor(c101, C102, C103) for DC-Link assembled in accordance the specification? Connect the connector. Are R113, R114, R kohm? Exchange the PCB. Is R kohm? Exchange the Fan. Exchange the PCB. rmal operation Exit 11-15
64 Troubleshooting O.C.(Over Current) error 1. Checklist : 1) Is the Shunt resistance value correct? 2) Is the condition of surrounding temperature abnormal overload? 3) Is there any problem as like the temperature sensor separation or measurement value error? 4) Is the interphase resistance of compressor normal? 2. Troubleshooting procedure Restart after power off. Is the O.C.(Over Current) error occurred? Terminate the service. Is the Shunt resistance value normal? Exchange the PCB. Is the interphase resistance value of compressor (u v, v w, w u) normal? Exchange the Compressor. Is the compressor body and interphase resistance insulated? Exchange the Compressor. Is the condition of indoor/outdoor temperature normal load? Restart after returning to the normal load. Is the O.C. error occurred again? Terminate the service. Is the position of temperature sensor and the sensing value normal? Correct the sensor position or exchange the sensor. Is the connection cable for the compressor and power terminal normal? Correct the cable connection. Exchange the PCB
65 Troubleshooting Communication error 1. Checklist : 1) Is the communication cable between the indoor unit and outdoor unit connected correctly? 2) Isn t the power cable and communication cable error? 2. Troubleshooting procedure Restart after power off. Is the communication error occurred again? Terminate the service. Isn't the power cable and communication cable error? Correct the wrong wiring. Is the connection of communication cable normal? Correct the connection of communication cable. Is it the outdoor 2 Micom(Inverter + Main) model? Exchange the indoor/outdoor unit PCB. Exchange the outdoor unit PCB
66 Troubleshooting Compressor start error 1. Checklist : 1) Is the connection of cable for the compressor and power? 2) Is the interphase resistance of compressor normal? 2. Troubleshooting procedure Restart after power off. Is the restart error occurred again? Terminate the service. Is the interphase resistance value of compressor (u v, v w, w u) normal? Exchange the compressor. Is the compressor body and interphase resistance insulated? Exchange the compressor. Is the connection cable for the compressor and power terminal normal? Correct the cable connection. Exchange the PCB
67 Troubleshooting Compressor lock error 1. Checklist : 1) Is the connection of cable for the compressor and power? 2) Is the interphase resistance of compressor normal? 2. Troubleshooting procedure Restart after power off. Is the lock error occurred again? Terminate the service. Is the interphase resistance value of compressor (u v, v w, w u) normal? Exchange the compressor. Is the compressor body and interphase resistance insulated? Exchange the compressor. Is the connection cable for the compressor and power terminal normal? Correct the cable connection. Exchange the PCB
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