LG ABNH366GLAC Service Manual Download Page 96

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Troubleshooting Guide

Universal System Air Conditioner

7) Troubleshooting CH23

DC Link Low voltage

• DC Link volt is below

300V

• Check point & Normal condition
• Check the TAB1 is connect.
• At not operating : DC Link voltage(260V

)

• At Comp operating : DC Link voltage(500V

)

Display

code

Title

Cause of error

Check point & Normal condition

Check Point

1. Check the Tab1 connection condition. (Refer to outdoor wiring diagram)

2. Check the CN_COIL(IN), CN_COIL(OUT) connection condition.

3. Check the DC Link voltage at not operating(260V

)

4. Check the DC Link voltage at Comp operating(500V

)

Summary of Contents for ABNH366GLAC

Page 1: ...ir Conditioner SERVICE MANUAL LG CAUTION website http www lgservice com e mail http www lgeservice com techsup html BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Page 2: ...ycle Troubleshooting Guide 81 Electronic Parts Troubleshooting 82 General Information 87 IV Electronic Control Device Ceiling Cassette Type 107 Ceiling Duct Type 108 Ceiling Suspended 109 Outdoor Unit 110 V Schematic Diagram Ceiling Cassette Type 113 Ceiling Duct Type 114 Ceiling Suspended 115 VI Functional Description Ceiling Cassette Type 118 Ceiling Duct Type 120 Ceiling Floor 126 Outdoor Units...

Page 3: ...ry or damage to properties only Installation Be sure not to do Be sure to follow the instruction Do not use a defective or under rated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire or electric shock Alway...

Page 4: ...tive installation stand It may cause injury accident or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air condi tioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense ...

Page 5: ...roduct damage Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Do not store or use flammable gas or com bustibles near the product There is risk of fire or failure of product If strange sounds or small or s...

Page 6: ...fire electric shock or damage to the plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on or put anyting on the product outdoor units There is risk of personal injury and failure of product Do not insert hands or other objects through the air inlet or outlet while the product is ope...

Page 7: ...I Indoor Units Introduction 8 Ceiling Cassette 4 way 10 Ceiling Floor 28 Ceiling Concealed Duct 44 Service Manual 7 ...

Page 8: ...6DLFC ATNH486DLFC ATNH606DLFC VK AVNH366KLAC AVNH366KLA1 VL AVNH426LLFC AVNH486LLFC AVNH606LLFC BG ABNH366GLAC BR ABNH426RLAC ABNH486RLAC ABNH606RLAC Nominal capacity Btu h kW Power Supply Model name Indoor Unit 1Ø 220 240V 50Hz Ceiling Suspended R410A R410A Ceiling Concealed Duct 8 Universal System Air Conditioner Introduction Introduction ...

Page 9: ...80V 415V 50Hz Nominal CoolingCapacity in Btu h Ex 18 18 000 Btu h 48 48 000 Btu h Model Type C Cooling Only H HeatPump Indicates that this is a indoor unit for R410A ATN Ceiling cassette type indoor unit ABN Ceiling concealed duct type indoor unit AVN Convertible type indoor unit P T H E C Functions A Basic C Plasma Air Purifier E Elevation Grille F Elevation Grille Plasma Air Purifier Indoor Unit...

Page 10: ...1 Features Benefits 11 2 List of Functions 15 3 Specifications 16 4 Dimensional Drawings 17 5 Wiring Diagrams 18 6 Piping Diagrams 19 7 Operating Instructions 20 8 Installation 22 9 Accessories 27 Ceiling Cassette 4 way R410A Indoor Units ATNH DL Ceiling Cassette 4 way ...

Page 11: ...Main body Remote control Zero stanby power consumption Jet cool Swirl swing Space control Compact Design and Easy Installation Only about 269mm height in the ceiling is sufficient for installation space A smaller size than a Textile 600X600 is very conve nient for installation Low Noise with 3 dimensional turbo fan The most advanced low noise design The adoption of turbo fan and round type heat ex...

Page 12: ... of up to 700 mm is possible creating the ideal solution for perfect water drainage High Ceiling Corresponding Operation According to the height of the installation it provides vari ability of indoor fan motor rpm If the height of installation is low then you can adjust low rpm of indoor fan motor On the other hand if the height of the installation is high you can adjust high rpm of indoor fan mot...

Page 13: ...al 2 4 4 8 100 Improved Comparison of Air Flow Types Comparison of Floor Temp Distribution 20 C Vane 1 Close Open Open Open Open Open Close Close Open Vane 3 Close Open Close Close Open Open Open Close Close Open Vane 2 Open Open Time Close Close Open Vane 4 Vane 1 Vane 3 Vane 2 Time Vane 4 Vane 3 Vane 4 Vane 1 Swirl Swing It is the function for comfort cooling heating operation The diagonal two l...

Page 14: ...res With the help of the slide switch at the back of the LCD wired remote controller selection of the desired thermistor for controlling the unit can be done One thermistor is in the Indoor unit the other one is in the LCD wired remote Group Control It enables to control as much as 16 units with the help of one wired remote controller All the units will follow same setting of temperature other sub...

Page 15: ...er Auto cleaning Auto operation Artificial intelligence Auto restart operation Child lock Convenience Forced operation Group control Sleep mode Timer On Off Timer weekly Two thermistor control Standard wired remote controller Deluxe wired remote controller Individual control Simple wired remote controller Wired remote controller for hotel use Wireless remote controller simple Wireless LCD remote c...

Page 16: ...1 107 1 25 23 21 29 26 23 30 28 26 34 32 30 883 812 742 1023 918 812 1059 988 918 1200 1130 1059 4 440 6 400 6 400 6 400 Direct Drive Direct Drive Direct Drive Direct Drive 2R x 12C x 21 2R x 12C x 21 2R x 12C x 21 2R x 12C x 21 840 288 840 33 1 11 3 33 1 840 288 840 33 1 11 3 33 1 840 288 840 33 1 11 3 33 1 840 288 840 33 1 11 3 33 1 950 30 950 37 4 1 2 37 4 950 30 950 37 4 1 2 37 4 950 30 950 37...

Page 17: ... 5 875 Ceiling opening 875 Ceiling opening 785 Hanging bolt 45 45 Unit mm 4 1 2 3 950 950 5 6 30 Number Name Descripition 1 Liquid pipe connection 36k ø6 35 42 48 60k ø9 52 flare 2 Gas pipe connection 36k ø15 88 42 48 60k ø19 05flare 3 Drain pipe connection 4 Power supply connection 5 Air discharge grille 6 Air suction grille unit mm 4 Dimensional Drawings ATNH DL ...

Page 18: ...CN D PUMP DRAIN PUMP OUTPUT CN DISP DISPLAY CN FLOAT FLOAT SWITCH INPUT CN PTC PTC HEATER INUT CN REMO REMOTE CONTROL CN GRILL GRILL CONTROL CN CC CENTRAL CONTROL CN PIPE2 DISCHARGE PIPE SENSOR CN ROOM ROOM SENSOR CN PIPE1 PIPE SENSOR CN HVB AIR CLEANER CN UD1 STEP MOTOR CN UD2 STEP MOTOR CN LR1 STEP MOTOR CN LR2 STEP MOTOR 5 Wiring Diagrams ...

Page 19: ...y Refrigerant pipe connection port diameter Model Gas Liquid unit mm inch Heat Exchanger Turbo Fan lndoor unit Heating Cooling Thermistor 6 Piping Diagrams ATNH366DLFC 15 88 5 8 6 35 1 4 ATNH426DLFC ATNH486DLFC 19 05 3 4 9 52 3 8 ATNH606DLFC ...

Page 20: ... Used to set the timer when the desired time is obtained 12 Week Button Used to set a day of the week 13 Program Button Used to set the weekly timer 14 Holiday Button Used to set a holiday of the week 15 Time Set Button Used to set the time of the day and change the time in the weekly timer Function 16 Set and Clear Button Used to set and clear the weekly timer 17 Swirl Button 4 way Used to select...

Page 21: ...sed to set Sleep Mode Auto operation 11 AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating 12 ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature 13 PLASMA OPTIONAL Used to start or stop the plasma purification func tion 14 RESET BUTTON Initialize remote controller 15 2nd F Button Used prior to using modes printed in blue at the bottom of buttons CAUTI...

Page 22: ... 32mm Level Screw driver Electric drill Hole core drill ø70mm Flaring Tools set Torque Wrenches Hexagonal Wrench 4mm 5mm Gas leak detector Owner s Manual Thermometer 8 1 Selection of the best location There should not be any heat source or steam near the unit There should not be any obstacles to the air circula tion There should be provision of easy condensate drain Taking into accounting the nois...

Page 23: ...opening 790 Ceiling opening 572 Hanging bolt 109 109 Unit mm 840 Unit size 840 Unit size 672 Hanging bolt 101 5 101 5 875 Ceiling opening 875 Ceiling opening 785 Hanging bolt 45 45 The dimensions of the paper pattern for installation are the same as those of the ceiling opening dimensions Select and mark the position for fixing bolts and piping hole Decide the position for fixing bolts slightly ti...

Page 24: ...M10 Nut W3 8 or M10 Spring washer M10 Air Conditioner body The following parts are local purchasing Hanging Bolt W 3 8 or M10 Nut W 3 8 or M10 Spring Washer M10 Plate Washer M10 Tighten the nut and bolt to prevent unit from falling off CAUTION Air inlet side view Control box cover Indoor power cord Remote controller cord Control box cover fitting screw 2 units Terminal Block in Indoor 1 L 2 N 3 4 ...

Page 25: ...After tightening these screws install the air inlet grille including the air filter Decoration panel fixing screws hexagon M5 screws Temporally fitting at 2 places Tightening about 10mm Control box cover Piping side Inlet Grille Inlet Grille Inlet Grille Louver motor Decoration panel fixing screws Hexagon M5 screw Air conditioner unit Decoration panel Key holes Display Lead wire for louver motor a...

Page 26: ...ible drain hose CAUTION The supplied flexible drain hose should not be curved neither screwed The curved or screwed hose may cause a leakage of water 1 50 1 100 MAX 700mm Flexible drain hose Flexible drain hose After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power specialized for the air conditioner As for the method of wiring be guid...

Page 27: ... Unit Standard Accessories Paper pattern for installation Owner s manual Installation manual No Item Type Model No Component Parts Wireless remote control 1EA Holder 1EA Battery 2EA Screw 2EA Central control Installation manual PCB 1EA Installation manual Wire assembly 1 2 3 Wireless remote control With air purifying function AHWRHD Central control Simple PQCSA101S0 PI485 Gateway For central contr...

Page 28: ... 1 Features Benefits 29 2 List of Functions 30 3 Specifications 31 4 Dimensional Drawings 32 5 Wiring Diagrams 33 6 Piping Diagrams 34 7 Operating Instructions 35 8 Installation 36 9 Accessories 43 Ceiling suspended R410A Indoor Units AVNH KL LL Ceiling suspended ...

Page 29: ...ifference in indoor temperatures and allowing air in every corner of the room Auto air flow direction up down The air flow direction can be adjusted as desired by using the remote controller This is effective when you want to cool yourself directly One touch air filter filter chage alarm function Easily change air filter when it is dirty ...

Page 30: ...network function Simple central control LGAP PDI Power Distribution Indicator PI485 CTIE Electro thermostat Special function kit RF remote controller Tele controller Zone control Others Thermistor 1 1 1 1 Manual Manual Manual Manual Auto Auto Auto Auto O O O O 3 4 3 3 4 3 3 4 3 3 4 3 X X X X O O O O O O O O O O O O O O O O X X X X O O O O O O O O O O O O O O O O X X X X O O O O X X X X O O O O X X...

Page 31: ... 3R 14C 19 3R 14C 19 3R 14C 19 3R 14C 19 3R 14C 19 1350 630 220 1350 630 220 1750 630 220 1750 630 220 1750 630 220 53 2 24 8 8 66 53 2 24 8 8 66 68 9 24 8 8 66 68 9 24 8 8 66 68 9 24 8 8 66 35 77 2 35 77 2 45 99 2 45 99 2 45 99 2 Long life filter Long life filter Long life filter Long life filter Long life filter 44 42 40 44 42 40 48 45 42 54 52 50 56 54 52 6 35 1 4 6 35 1 4 9 52 3 8 9 52 3 8 9 5...

Page 32: ...5 36k Ø 19 05 Ø 9 52 42k 48k 60k Gas Liquid Model 1 Pipe Specification mm Note More than 70cm More than 30cm More than 70cm Suspension bolt 320mm B Washer Nut Suspension bolts Ceiling Anchor nut Suspension bolts Spring washer Max 12mm Hangen Washer Nut Dimension Chassis VL Chassis 1750 1655 220 VK Chassis 1350 1255 220 A B C unit mm ...

Page 33: ...CN POWER AC POWER SUPPLY CN TH2 DISCHARGE PIPE SENSOR CN MOTOR BLDC FAN MOTOR OUTPUT CN TH1 PIPE AND ROOM SENSOR CN D PUMP DRAIN PUMP OUTPUT CN HVB AIR CLEANER CN AC DC AC DC CONNECTION CN DOOR STEP MOTOR CN DISPLAY DISPLAY CN U D1 STEP MOTOR CN FLOAT FLOAT SWITCH INUT CN CC CENTRAL CONTROL AVNH KL AVNH LL ...

Page 34: ...ner 6 Piping Diagrams Refrigerant pipe connection port diameter unit mm inch Heat Exchanger C F F lndoor unit Heating Cooling Thermistor Model Gas Liquid AVNH366KLAC AVNH366KLA1 15 88 5 8 6 35 1 4 AVNH426LLFC AVNH486LLFC 19 05 3 4 9 52 3 8 AVNH606LLFC ...

Page 35: ...starting and stopping operation 8 TIME SETTING BUTTONS Used to adjust the time 9 TIMER SET CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation 10 SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation 11 AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating 12 ROOM TEMPERATURE CHECKING BUTTON Used to check the roo...

Page 36: ...prevent the air circulation A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is taken into consid eration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling or other obstacles 8 2 Indoor unit installation Installation of Unit Unit should be installed for horizontal ...

Page 37: ...the position for fixing bolts Drill the hole for set anchor on the face of ceiling Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the ceiling Mount the suspension bolts to the set anchor firmly Secure the installation plates onto the suspension bolts adjust level roughly using nuts washers and spring washers Suspension bolts Spring washer Max 12mm Wa...

Page 38: ...t grill side 4 Hold the side cover with other hand while tapping to prevent it to fall down Recommendation it is recommended to select the left side for drain to have common hole in the side cover along with pipe and wiring 5 Remove the rubber stopple in the desired drain direc tion 6 Knock out the pipe hole from the left side cover with the help or nipper plier 7 Knock hole on right side cover on...

Page 39: ... ceiling Mount the suspension bolts to the anchor nuts firm ly Secure the hangers onto the Suspension bolts adjust level roughly using nuts washers and spring washers Adjust a level with a level gauge on the direction of left right back forth by adjusting suspension bolts Adjust a level on the direction of top bottom by adjusting supension bolts Then the unit will be declined to the bottomside so ...

Page 40: ...l or inclined at angle The inclination should be less thanr or euql to 1 or in between 10 to 20mm inclined in drain direction as shown in fig The unit must be declined to the bottomside of the unit when finished installation Side of view 8 5 Indoor unit installation Hang the Indoor unit on suspension bolt as per following guidelines 1 Lift the indoor unit to sufficient height 2 Insert the suspende...

Page 41: ... using a ket tle 2 Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit Drain piping 1 The drain hose should point downward for easy drain flow 2 Do not make drain piping like the following Downward slope Do not raise Accumulated drain water Tip of drain hose dipped in water Air Waving Water leakage Water leakage Ditch Less than 50mm gap ...

Page 42: ...onditioner As for the method of wiring be guided by the circuit diagram pasted on the inside of control box cover 2 Provide a circuit breaker switch between power source and the unit 3 The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation Check them and make sure that they a...

Page 43: ...Drain hose 1 EA Clamp 8 EA Washer for hanging backet 6 EA Other Owner s manual Installation manual Optional Accessories For Unit Standard Accessories No Item Type Model No Component Parts Central control Installation manual PCB 1EA Installation manual Wire assembly 1 2 Central control Simple PQCSA101S0 PI485 Gateway For central control PHNFP14A0 ...

Page 44: ...fits 45 2 List of Functions 47 3 Specifications 48 4 Dimensional Drawings 49 5 Wiring Diagrams 50 6 Piping Diagrams 51 7 E S P Setting for 52 8 OPERATIONG INSTRUCTION 56 9 Installation 58 10 Accessories 63 Ceiling Concealed Duct R410A Indoor Units ABNH HL GL RL Ceiling Concealed Duct ...

Page 45: ...system Accessory Hygienic and easy to clean filter Easy Installation Flexible Duct is easy to install regardless of room size or heater position It can be installed even in a limited space and saves construction cost with slim thickness Innovative Design of Fan and Housing System Low Noise Easy Serviceability Plastic Fan and Housing Assembly Designed for low noise Designed to reduce weight Designe...

Page 46: ...ne is lower than set temperature then the damper is closed On the other hand if the temperature of a particular zone is higher than the set temperature damper is opened to pro vide cooling to the zone and vice versa in the heating mode Polluted Air Purified fresh Air 4 8KV discharge Ionizer Photo Catalyst Coated Mesh Dust particles Odour Dust electrode discharge Odour molecule Generating plasma LG...

Page 47: ...ntroller for hotel use Wireless remote controller simple Wireless LCD remote controller General central control Non LGAP Dry contact CAC network function Simple central control LGAP PDI Power Distribution Indicator PI485 Special function kit CTIE Zone control Others Thermistor 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 ABPAGH ABPAGH ABPARH ABPARH O O O O ABDPG ABDPG ABDPG ABDPG O O O O O O O O O O O O O O O ...

Page 48: ...o Fan Sirocco Fan Sirocco Fan Sirocco Fan 272 2 431 2 431 2 431 2 32 29 26 36 32 28 40 35 30 50 45 40 1130 1024 918 1260 1120 980 1413 1236 1059 1766 1413 1236 10 10 15 15 6 370 15 450 15 450 15 450 Direct Drive Direct Drive Direct Drive Direct Drive 3R x 10C x 21 3R x 10C x 21 3R x 13C x 19 4R x 13C x 19 1180 298 450 46 5 11 7 17 7 1230 380 590 48 4 15 0 23 2 1230 380 590 48 4 15 0 23 2 1230 380 ...

Page 49: ... box 1000 H l i h j k A H C D E F B G a b c d K J f e Ø 15 88 Ø 6 35 Ø 9 52 36k Ø 19 05 42k 48k 60k Gas Liquid Model 1 Pipe Specification mm Note C D E F G H J K a b c d e f h i j k l 355 45 5 450 30 87 830 186 298 229 5 243 232 243 116 160 53 59 81 19 158 5 477 56 590 30 120 1006 294 380 215 279 241 279 185 168 51 98 83 17 172 Capacity A B 1232 1182 1282 1230 ABNH366GLAC ABNH426RLAC ABNH486RLAC A...

Page 50: ...L BR 1 L 2 N 3 4 5 CN OUT CN PTC PTC HEATER VENTILATION E HEATER CN ZONE ZONE CONTROL CN FLOAT FLOAT S W CONNECTOR NUMBER LOCATION CN POWER AC POWER SUPPLY CN MOTOR BLDC FAN MOTOR OUTPUT CN D PUMP DRAIN PUMP OUTPUT CN DISP RF REMOTE CONTROL CN FLOAT FLOAT SWITCH INUT CN ZONE ZONE CONTROL OUTPUT CN CC CENTRAL CONTROL OUTPUT CONNECTOR NUMBER LOCATION CN PIPE1 PIPE SENSOR CN PIPE2 DISCHAGE PIPE SENSO...

Page 51: ... 6 Piping Diagrams Refrigerant pipe connection port diameter unit mm inch Heat Exchanger Sirocco Fan lndoor unit Heating Cooling Thermistor Model Gas Liquid ABNH366GLAC 15 88 5 8 6 35 1 4 ABNH426RLAC ABNH486RLAC 19 05 3 4 9 52 3 8 ABNH606RLAC ...

Page 52: ...aried according to the state of dampers by micom 2 Position F H Maximum E S P setting Fan speed doesn t vary according to the opening Closing of dampers 3 Position V L Minimum E S P setting Fan speed is varied according to the state of dampers by micom Maximum 18 24k 8mmAq 30 36k 10mmAq 48 60k 15mmAq Minimum All 0mmAq 3 Move the slide switch to set position 4 Close the rear cover and check if it w...

Page 53: ...igit only If the range selection is above 100 then the third digit will appear in the screen as shown Preheat ZONE Operation unit Program set Room Temp MED LO AUTO JET Heater Defrost Filter Humidify Out door Timer On Set no Time Off 01 03 05 07 09 11 13 15 17 19 21 23 1 2 3 4 OPERATION FAN SPEED SUB FUNCTION SET TEMP HI AUTO SWING Time Preheat ZONE Operation unit Program set Room Temp MED LO AUTO ...

Page 54: ...2 230 225 220 215 205 200 190 180 160 ABNH486RLAC Med 35 1235 250 245 240 235 230 220 215 210 200 Low 30 1059 255 255 255 250 245 240 235 230 225 High 50 1766 185 180 174 162 154 140 90 5 1 ABNH606RLAC Med 45 1589 210 205 199 191 189 180 155 138 110 Low 40 1423 230 225 219 215 210 205 193 180 171 Note 1 To get the desired Airflow E S P combination from the table set the matching value from the tab...

Page 55: ...02 37 5 1324 36 4 1286 ABNH426RLAC Med 230 41 1448 40 2 1420 37 6 1328 35 1236 33 8 1194 32 7 1155 Low 248 37 1307 36 1 1275 34 6 1222 31 5 1112 29 1 1028 27 9 985 High 200 49 1730 47 4 1675 44 9 1584 43 3 1529 41 7 1472 40 1412 38 6 1361 37 1305 35 4 1249 ABNH486RLAC Med 220 44 1554 42 4 1498 40 2 1420 39 2 1384 36 7 1296 35 1236 34 6 1220 33 1164 32 2 1137 Low 240 38 1342 37 2 1314 35 1234 32 4 ...

Page 56: ...d to set the Electric Heater 6 Fan Speed Button Used to set desired fan speed 7 Operation Mode Selection Button Used to select the operation mode Auto Operation Mode Cooling Operation Mode Soft Dry Operation Mode Heating Operation Mode except cooling model 8 Timer Cancel Button Used to cancel the timer 9 Timer Set Button Used to set the timer when the desired time is obtained 10 Week Button Used t...

Page 57: ...ration ex elec tronic quick start ELBA inverter type fluorescent lamp Signal transmitter Transmits the signals to the signal receptor 1 FAN Operation Button Used to circulate room air without cooling or heat ing 2 Cooling Operation Button 3 Soft Dry Operation Button Used to dehumidify without overcooling 4 Heating Operation Button Heat pump model only 5 Timer Set Button Used to set the timer when ...

Page 58: ...ll ø70mm Flaring Tools set Torque Wrenches Hexagonal Wrench 4mm 5mm Gas leak detector Owner s Manual Thermometer 9 1 Selection of the best location Install the air conditioner in the location that satisfies the fol lowing conditions The place shall easily bear a load exceeding four times the indoor unit s weight The place should have enough area for inspection as shown in figure The place where th...

Page 59: ... C 1 3 mm D G H I E F NOTE Throughly study the following installation locations 1 In such places as restaurants and kitchens considerable amount of oil steam and flour adhere to the fan the fin of the heat exchanger resulting in heat exchange reduction spraying dispersing of water drops etc In these cases take the following actions Make sure that the ventilation fan for smoke collecting hood on a ...

Page 60: ...ntrol board individually according to the outdoor unit connection Ensure that the color of the wires of outdoor unit and the terminal No are the same as those of indoor unit respectively Clamping of cables 1 Arrange 2 power cables on the control panel 2 First fasten the steel clamp with a screw to the inner boss of control panel 3 For the cooling model fix the other side of the clamp with a screw ...

Page 61: ...ulator for piping Local supply Hose crip for thermal insulator Local supply Union for liquid pipe Refrigerant pipe and thermal insulator Local supply Union for gas pipe Thermal insulator for refrigerant pipe Local supply Hose crip for thermal insulator Local supply 9 5 Checking the Drainage 1 Remove the Air Filter 2 Check the drainage Spray one or two glasses of water on the evapo rator Ensure tha...

Page 62: ...ipe Drain Pump 1 50 1 100 1 50 1 100 Front of view Alway lay the drain with downward inclination 1 50 to 1 100 Prevent any upward flow or reverse flow in any part 5mm or thicker formed thermal insulator shall always be provided for the drain pipe CORRECT Install the P Trap or U Trap to prevent a water leakage caused by the blocking of intake air filter Applied U Trap Dimension 1 Decline Installati...

Page 63: ...onent Parts Wireless remote control 1EA Holder 1EA Battery 2EA Screw 2EA Plasm Air Purifier Kit 1EA Wired Remote Control 1EA Factory sypplied Zone control PCB Durchased Locally Damper Damper Moter thermostat Drain Pump Assembly 1EA Central control Installation manual PCB 1EA Installation manual Wire assembly 1 2 3 4 5 6 Wireless remote control With air purifying function AHWRHS AHWRHD LCD Plasma a...

Page 64: ...64 Universal System Air Conditioner II Outdoor Units Introduction 65 AUUW C R410A 67 ...

Page 65: ...ling cassette ceiling concealed duct and ceiling floor types Series Model name Power supply AUUW368C AUUW368C1 MPS Inverter Heat Pump AUUW428C 3Ø 380 415 50Hz AUUW488C AUUW608C Outdoor unit Indoor unit Type Model name Ceiling Cassette ATNH366DLFC AUUW368C Ceiling Suspended AVNH366KLAC AUUW368C1 AVNH366KLA1 Ceiling Concealed Duct ABNH366GLAC Ceiling Cassette ATNH426DLFC AUUW428C Ceiling Suspended A...

Page 66: ...Phase Volts Freq 6 1Ø 220V 240V 50Hz 8 3Ø 380V 415V 50Hz Indicates that this is a R410A outdoor unit Model Type W Inverter Heat Pump H Heat Pump Nominal Cooling Capacity in Btu h 18 18 000 Btu h 12 12 000 Btu h 24 24 000 Btu h 72 72 000 Btu h 100 100 000 Btu h 30 30 000 Btu h 36 36 000 Btu h 48 48 000 Btu h 60 60 000 Btu h ...

Page 67: ...rter SINGLE A Contents 1 Specifications 68 2 Dimensional Drawings 70 3 Wiring Diagrams 72 4 Piping Diagrams 74 5 Electric Characteristics 75 6 Operation Range 76 7 Installation 77 R410A Outdoor Units AUUW C Inverter SINGLE A ...

Page 68: ...Btu h 0 252 CFM CMM 35 3 Indoor Units Outdoor Units Cooling kw Nominal Capacity Btu h Min Rating Max Heating kw Btu h Nominal Input Cooling kw Min Rating Max Heating kw Energy label Nominal Capacity and Nominal Input ATNH366DLFC ATNH426DLFC ATNH486DLFC ATNH606DLFC AUUW368C AUUW428C AUUW488C AUUW608C 6 24 9 52 10 85 7 39 11 87 13 55 8 24 12 89 15 34 8 80 14 21 16 13 21 300 32 500 37 000 25 200 40 5...

Page 69: ...Rotary Twin Rotary 1 x 5KD240X 1 x 5KD240X 1 x 5JD420X 1 x 5JD420X 1 x 5JD420X BLDC BLDC BLDC BLDC BLDC 900 900 1300 1300 1300 FV50S FV50S FV50S FV50S FV50S 2500 88 18 2500 88 18 4000 141 1 4000 141 1 4000 141 1 R410A R410A R410A R410A R410A L E V L E V L E V L E V L E V 50 30 50 30 75 30 75 30 75 30 2R x 48C x 18 2R x 48C x 18 2R x 52C x 18 2R x52C x 18 2R x 52C x 18 Reversing cycle Reversing cyc...

Page 70: ...nsional Drawings AUUW368C AUUW368C1 76 5 4 holes for anchor bolts 320 Unit mm 64 160 160 550 1060 360 340 320 1030 870 4 2 3 1 Number Name Descripition 1 Liquid side service valve mm Ø6 35 2 Gas side service valve mm Ø15 88 3 Air discharge grill 4 Control Cover ...

Page 71: ... L1 L2 L3 Gas side 3 way valve Control cover Liquid side 3 way valve 4 hole for anchor bolts W mm 900 H mm 1 165 D mm 370 L1 mm 460 L2 mm 45 L3 mm 410 L4 mm 1 135 L5 mm 30 L6 mm 550 L7 mm 175 L8 mm 175 L9 mm 112 L10 mm 120 L11 mm 83 mm Ø9 52 mm Ø19 05 AUUW42 48 608C Model Dimensions ...

Page 72: ...72 Universal System Air Conditioner Inverter SINGLE A AUUW368C AUUW368C1 3 Wiring Diagrams ...

Page 73: ...Service Manual 73 Inverter SINGLE A AUUW42 48 608C ...

Page 74: ...olenoid valve Reversing Valve Thermistor Thermistor Thermistor Thermistor Cooling Heating Refrigerant flow Low Pressure Switch L E V Heat Exchanger Field piping Liquid ØA Field piping Gas ØB MODEL A mm B mm AUUW368C1 AUUW428C 9 52 19 05 AUUW488C 9 52 19 05 19 05 AUUW608C 9 52 AUUW368C 6 35 15 88 AUUW36 42 48 608C 368C1 ...

Page 75: ...tors Load3 any other load rated 1 0A or more 4 Select wire spec based on the MCA 5 Select proper circuit breaker as given below MCA circuit breaker MOP 6 Recommended circuit breaker is ELCB Earth Leakage circuit breaker 7 MSC RLA are measured as the compressor only test condi tion 8 MSC values 14 MSC of inv comp 9 RLA is measured during each individual compressor test condi tion Ex 7 0 RLA of inv ...

Page 76: ... operation 24 Warming up Operation Outdoor Unit C DB Indoor Unit CDB Heating Although low ambient kit is installed in case outdoor temperature goes below 0 C the cooling capacity can be dropped and operation characteristics can be slightly different Operative Intermittent operation due to the operation conditions indoor outdoor temperature humidity and load can cause the heating capacity to drop ...

Page 77: ...an 50cm Service space More than 30cm Fence or obstacles More than 70cm More than 50cm More than More than 30cm 30cm More than 30cm Sunroof 7 2 Settlement of outdoor unit Anchor the outdoor unit with a bolt and nut ø10mm tight ly and horizontally on a concrete or rigid mount When installing on the wall roof or rooftop anchor the mounting base securely with a nail or wire assuming the influence of w...

Page 78: ...8 9 52mm 7 5 75 5 30 50 Capacity Pipe Size Length A m Elevation B m Additional Diameter Ø refrigerant g m Outdoor unit Indoor unit A B Outdoor unit Indoor unit A B A Oil trap If piping length is more than 5m Outdoor unit Indoor unit B CAUTION Rated performance for refrigerant line length of 7 5m Capacity is based on standard length and maximum allowance length is on the basis of reliabili ty Impro...

Page 79: ...Troubleshooting Guide Service Manual 79 III Troubleshooting Guide Self diagnosis Function 80 Cycle Troubleshooting Guide 81 Electronic Parts Troubleshooting Guide 82 General Information 87 ...

Page 80: ...mode operation 7times OFF Outdoor Error Error Code Description INV TPS LED 1 Red LED 2 Green Indoor Status 21 DC Peak IPM Fault 2times 1times Off 22 CT 2 Max CT 2times 2times Off 23 DC Link Low Volt 2times 3times Off 24 L H press SW 2times 4times Off 25 Low voltage Over voltage 2times 5times Off 26 DC Comp Position Error 2times 6times Off 32 D Pipe High INV 3times 2times Off 33 D Pipe High Normal ...

Page 81: ...ressure of refrigeration cycle Notice 1 The suction pressure is usually 4 5 6 0 kg cm2 G at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty Temp difference approx 0 C Current less than 80 of rated current Temp difference approx 8 C Current less than 80 of rated current Temp difference less than 8 C Current near the r...

Page 82: ...wer AC220V AC240V 50Hz The voltage of main power The voltage applied to the unit The connecting method of Indoor Outdoor connecting cable each color The P W B Ass y Fuse Noise Filter Power Transformer IC01D IC02D etc Trouble 1 NO YES The operation check of the P C B Ass y Procedure 1 The input voltage of power trans former 2 The output voltage of power transformer 3 IC01D 7812 4 IC02D 7805 5 IC01A...

Page 83: ...eping Mode the wind speed is set to the low speed as force Caused by the remote controller Caused by other parts except the remote controller When the mark is displayed in LCD screen replace battery Check the contact of CN DISP 1 connector When the detect switch double key inside the remote controller door is fault it is impossible to operate temperature regulating and wind speed selecting Check D...

Page 84: ...essor Outdoor fan is stopped Check the related circuit of R02H 12 1K R01H 1K R04H 6 2K R03H 1K C01H 102 C02H 102 Micom pin No Check the Indoor temperature sensor is disconnected or not about 10K at 25 C Check the Relay RY PWR RY START for driving Compressor Check the voltage between CN CP L and CN CP N of terminal to connect the Outdoor About AC220V 240V Check the related circuit of relay in Outdo...

Page 85: ...the Fan Motor Check the Fuse AC250V T2A Turn on the main power Check the related circuit of indoor Fan Motor The pin No 38 of micom and the part for driving SSR Q01M Check the related pattern Check the SSR SSR Open Indoor Fan Motor never operate SSR short Indoor Fan Motor always operates in case of ON or OFF The voltage of Pin No 1 orange and 3 black of CN FAN About AC 160V over About AC 50V over ...

Page 86: ...CB of CN U D or CN0L R Connector Check the operating circuit of the vertical louver Confirm that there is DC 12V between pin of CN U D CN0L R and GND Confirm that there is a soldering short at following terminals Between 1 2 3 and 4 of MICOM Between 17 18 19 and 20 of MICOM Between 4 5 6 and 7 of IC01M Between 5 6 7 and 8 of IC01M When the louver does not operate Trouble 5 If there are no problems...

Page 87: ...usly lower number of error code is first displayed After error occurs if error is released error LED is also released simultaneously Indoor Error 1 digit 10 digit Case of error Contents Error code Open Short Outlet pipe sensor 06 Different operation mode Different operation mode 07 Communication Poorly Float switch Open Communication Poorly Open Short Open Short Air sensor open short 01 Inlet pipe...

Page 88: ... Lock Comm Error Main board Fan board 21 22 23 24 25 65 67 105 Off Off Off Off Off Off Off Off Indoor Status 2 times 2 times 2 times 2 times 2 times 6 times 6 times 10 times 1 time 2 times 3 times 4 times 5 times 5 times 7 times 5 times LED03G Yellow Descriotion Error code DC PEAK IPM Fault DC Comp position Error No Position Locking Error Comm Error Main micon Sub micom DC Link Low voltage Error C...

Page 89: ...voltage 2 5Vdc at 25 C plugged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Display code Title Cause of error Check point Normal condition Check Point 1 Unplug the sensor on Indoor unit PCB 2 Estimate the resistance of each sensor 3 If the resistance of the sensor is 10KΩ 5KΩ at 25 C then sensor is normal 4 If the resistance of the sensor is 0 KΩ or then sensor is ab...

Page 90: ...ire Main PCB Volt DC12V Noise interference Display code Title Cause of error Check point Normal condition Check Point 1 Check the wire connection Open Short Repair the connection 2 Check the soldering state of connector Soldered poorly Repair or Change the PCB 3 Check the volt Of main PCB power source DC 12V DC 5V Repair or Change the main PCB 4 Check the installation of wired remote controller No...

Page 91: ...wer input 220V Drain tube installation Indoor unit installation Inclination Display code Title Cause of error Check point Normal condition Check Point 1 Check the wire connection Open Soldered poorly Repair the connection or change the PCB 2 Check the resistance of float switch Abnormal Open Normal short Check the float switch 3 Check the level of water 4 Check the volt Of Drain pump power supply ...

Page 92: ... Check point Normal condition Check Point 1 Check the input power AC230V Outdoor Indoor unit 2 Check the communication wires are correctly connected Adjust the connection of wire Confirm the wire of Live Neutral 3 Check the resistance between communication line and GND Normal Over 2MΩ 4 Check the connector for communication is correctly connect ed 5 If one indoor unit is operated normally outdoor ...

Page 93: ...ion of IPM An instant over current in the U V W phase Comp lock The abnormal connection of U V W Over load condition Overcharging of refrigerant Pipe length Outdoor Fan is stop Poor insulation of compressor Display code Title Cause of error Check point Normal condition Check Point 1 Check the wire connection U V W 2 Check the load condition Refrigerant Pipe length Adjust the load condition 3 Check...

Page 94: ...he IPM Measuring after Comp connector disconnect 1 Test mode set diode mode RD RD BK BK P N W V U P N W V U Measuring method A B Terminal P N W V U U V W 0 4 0 6V 0 4 0 6V 0 4 0 6V 0 4 0 6V 0 4 0 6V 0 4 0 6V Measuring method A Measuring method B Troubleshooting CH21 ...

Page 95: ...sor Blocking of pipe Low voltage input Refrigerant pipe length blocked Display code Title Cause of error Check point Normal condition Check Point 1 Check the power source 200 240V 2 Check the fan operation is right 3 Check the current 4 Check the install condition 5 Check the internal circuit C T Diode Resistor ...

Page 96: ...nect At not operating DC Link voltage 260V At Comp operating DC Link voltage 500V Display code Title Cause of error Check point Normal condition Check Point 1 Check the Tab1 connection condition Refer to outdoor wiring diagram 2 Check the CN_COIL IN CN_COIL OUT connection condition 3 Check the DC Link voltage at not operating 260V 4 Check the DC Link voltage at Comp operating 500V ...

Page 97: ...omponents Check the power source Check the components Display code Title Cause of error Check point Normal condition Check Point CH 24 1 Check the connection of CN_PRESS 2 Check the component of press switch 3 Check the install condition for over load 4 Check the SVC V V open 5 Check the leakage of refrigerant CH 25 1 Check the power source 2 Check the components Trans1 Primary resistance 2 27kΩ 1...

Page 98: ...sor Check the component of IPM detection parts Display code Title Cause of error Check point Normal condition Check Point 1 Check the connection condition of PCB 2 Check the connection condition of Comp U V W wire 3 Check the connection condition of CN_IPM P CN_IPM N 4 Check the comp resistor and insulation resistance 5 Check the IPM 6 Check the pressure of refrigerant 7 Check the Service Valve Op...

Page 99: ...arge sensor Inverter temp high Check the discharge pipe sensor for INV Check the install condition for over load Check the leakage of refrigerant Check the Service Valve open Check the outdoor fan Display code Title Cause of error Check point Normal condition Check Point 1 Check the install condition for over load 2 Check the Service Valve open 3 Check the outdoor fan operating condition 4 Check t...

Page 100: ...or Initial current error Malfunction of current detection circuit Open Short The voltage of C01N Is 4 0Vdc 25A Display code Title Cause of error Check point Normal condition Check Point 1 Check the input voltage 200 240V 2 Check the voltage of C01N at not operating 0V 3 Check the voltage of Figure2 red point at not operating 2 5V ...

Page 101: ... at 25 C Unplugged Normal voltage 4 5Vdc at 25 C plugged Normal resistor 10KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 200KΩ at 25 C Unplugged Normal voltage 4 5Vdc at 25 C plugged Normal resistor 10KΩ at 25 C Unplugg...

Page 102: ...it capacity Check the combination table Check the PCB ASM P No Check the poor soldering Display code Title Cause of error Check point Normal condition Check Point CH 51 1 Check the indoor unit capacity CH 60 1 Check the insertion condition of EEPROM 2 Check the poor soldering Model Max single indoor unit capacity AUUW368C AUUW368C1 40 AUUW428C 46 AUUW488C 52 AUUW608C 65 ...

Page 103: ...wiring of outdoor unit Reverse Phase omission of phase Abnormal Main PCB No connection of CN_Phase Changed R S T connection order Display code Title Cause of error Check point Normal condition Check Point 1 Check the connection condition of R S T wire 2 Check the connection condition of CN_Phase 3 Check the outdoor main fuse ...

Page 104: ...ck the load condition Check the sensor of Condenser pipe sensor Check the fan is locked Check the sensor of heat sink Display code Title Cause of error Check point Normal condition Check Point CH 61 1 Check the install condition for over load Refrigerant Pipe length Blocked CH 62 1 Check the fan is locked 2 Check the sensor of heat sink COMP Hz 95 C 70 C 80 C 5Hz Down 5Hz Down OFF OFF OFF FAN ON H...

Page 105: ... main PCB and fan PCB Check the fan condition Check the fan connector Short or fusing of communication line Poor outdoor unit PCB Power input when the DC link capacitor discharges Display code Title Cause of error Check point Normal condition Check Point CH 67 1 Check the install condition for fan CH 105 1 Is communication line between the main PCB and the fan PCB normal 2 Is the communication LED...

Page 106: ...Electronic Control Device 106 Universal System Air Conditioner IV Electronic Control Device Ceiling Cacsette Type 107 Ceiling Duct Type 108 Celing Suspended 109 Outdoor Unit 110 ...

Page 107: ...Electronic Control Device Service Manual 107 Main P C B ASM A 6871A10209 B 58 Ceiling Cacsette Type ...

Page 108: ...Electronic Control Device 108 Universal System Air Conditioner BG BR Series Ceiling Duct Type ...

Page 109: ...Electronic Control Device Service Manual 109 VK VL Series Ceiling Suspended ASM 6871A10025 ASM 6871A10186 ...

Page 110: ...Electronic Control Device 110 Universal System Air Conditioner Outdoor Unit 1 Component side ...

Page 111: ...Electronic Control Device Service Manual 111 2 Solder side ...

Page 112: ...Schematic Diagram 112 Universal System Air Conditioner V Schematic Diagram Ceiling Cacsette Type 113 Ceiling Duct Type 114 Celing Suspended Outdoor Unit ...

Page 113: ...Schematic Diagram Service Manual 113 Ceiling Cassette Type ...

Page 114: ...Schematic Diagram 114 Universal System Air Conditioner Ceiling Duct Type ...

Page 115: ...Schematic Diagram Service Manual 115 Ceiling Suspended ...

Page 116: ...Schematic Diagram 116 Universal System Air Conditioner G G N L N L C 3 C 2 C 4 C 1 Outdoor Unit ...

Page 117: ...Functional Description Service Manual 117 VI Functional Description Ceiling Cacsette Type 118 Ceiling Duct Type 120 Celing Suspended 123 Outdoor Unit 126 ...

Page 118: ...ontroller control Cooling Mode Operation When selecting the Cooling Mode Operation the unit will operate according to the setting by the remote con troller and the operation diagram is as following Swirl Swing Control Vane 2 4 is almost vane closed while vane1 3 is opened Vane 1 3 and vane 2 4 turn over minutely Intake Air Temperature Thermo On SET TEMPERATURE 0 5 C Thermo Off SET TEMPERATURE 0 5 ...

Page 119: ...owing 21 C 23 C 32 C 29 C 17 C Pipe temperature OFF Indoor fan speed LO LOW LOW SELECTED FAN LOW LOLOW COMP ON COMP Outdoor fan Indoor fan 4way valve Setting Temperature 2 C Unit Sensing 0 C Remo Sensing Thermo ON Setting Temperature 4 C Unit Sensing 2 C Remo Sensing Thermo OFF Indoor unit Heat Exchanger temperature 1min Minimum 3min 1min 3min Setting fan spped Setting fan spped Setting fan spped ...

Page 120: ...speed fan speed fan speed COMPRESSOR ON OFF ON OFF ON INDOOR FAN Low Low Soft Dry Operation The indoor fan speed is automatically set to the low so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control Cooling Mode Operation When selecting the Cooling Mode Operation the unit will operate according to the setting ...

Page 121: ...C Remo Sensing Thermo OFF Indoor unit Heat Exchanger temperature 1min Minimum 3min 1min 3min Setting fan spped Setting fan spped Setting fan spped ON ON ON ON Low Low Low Low Low Lo Off Off Off ON OFF OFF Low fan during 10sec A A B B Intake Air Temperature Compressor off interval While the indoor Heat Exchanger temperature is higher than 40 C fan operates at low speed when it becomes lower than 40...

Page 122: ...an does not rotate until the indoor unit Hex Exchanger temperature reaches 27 C The operation diagram is as following ON ON Off Off Low Low 1min 1min 20 C 27 C 33 C Indoor unit Heat Exchanger temperature Setting fan spped Setting fan spped Compressor Outdoor fan Indoor fan 4way Valve ON ...

Page 123: ...ry Operation by microcontroller control Cooling Mode Operation When selecting the Cooling Mode Operation the unit will operate according to the setting by the remote controller and the operation diagram is as following Intake Air Temperature SET TEMPERATURE 0 5 C Thermo ON SET TEMPERATURE 0 5 C Thermo OFF More than More than 3 minutes 3 minutes Selecting Selecting Selecting fan speed fan speed fan...

Page 124: ...sing 2 C Remo Sensing 1 C Flore Install Thermo OFF Indoor unit Heat Exchanger temperature 1min Minimum 3min 1min 3min Setting fan spped Setting fan spped Setting fan spped ON ON ON ON Low Low Low Low Lo Low Off Off Off ON OFF OFF Low fan during 10sec A A B B Intake Air Temperature Compressor off interval While the indoor Heat Exchanger temperature is higher than 35 C fan operates at low speed when...

Page 125: ... not rotate until the indoor unit Hex Exchanger temperature reaches 21 C The operation diagram is as following ON ON Off Low Low 1min 21 C 17 C 32 C Indoor unit Heat Exchanger temperature Setting fan spped Setting fan spped Compressor Outdoor fan Indoor fan 4way Valve ON ...

Page 126: ...ller Cooling mode Heating mode Stop state Compressor Step Control Step Control stop Fan Step Control Step Control After 30sec Off EEV PID Control PID Control After 60sec Full Open 4 way valve Off On After 30sec Off Step_base Standard frequency step by Qj Summation of capacity code Long piping Comp Step compensation by setting long piping Step_TAO step compensation by TAO Outdoor temp Step_TAI step...

Page 127: ...p_base exceeds maximum step the Step_base value follows the maximum step value The compressor get the minimum step in case Step_base value is lower than the minimum step of operating capacity Compressor operation range Control Capacity Load Inverter Compressor ...

Page 128: ...ulse down T superheating 2 C 2 Target Temperature Control Cooling mode In case outdoor temperature 39 C Target superheating T target Tin 18 C LEV pulse up T target 18 C LEV pulse down T target 18 C 3 Target Temperature Control Heating mode LEV pulse up T target Tout LEV pulse down T target Tout 4 LEV pulse change Value 8 pulse P1 P0 4 C 4 pulse 4 C P1 P0 3 C 2 pulse 3 C P1 P0 1 C ...

Page 129: ...an A Fan B 4 High High 3 Low Low 2 High X 1 Low X 0 X X Step_Fan Step_Fan 1 Step_Fan 2 Step_Fan 1 Step_Fan 2 41 C 38 C 28 C 22 C Step_Fan 2 Step_Fan 1 Step_Fan 1 Cooling Single FAN Cooling two FAN Outdoor temperature Step_Fan 3 10 C Step_Fan Step_Fan 1 Step_Fan 2 Step_Fan 1 Step_Fan 2 Step_Fan 4 Step_Fan 1 Step_Fan 1 20 C 14 C 4 C 3 C Heating Single FAN Heating two FAN Outdoor temperature ...

Page 130: ...3 STEP 4 STEP 5 STEP 6 STEP 7 STEP 8 STEP 9 STEP 10 STEP 11 STEP 12 STEP 13 Min RPM Max RPM RPM Lower OFF 200 250 300 400 500 600 700 750 800 850 900 950 200 950 Step_Fan Step_Fan 1 Step_Fan 2 Step_Fan 2 Step_Fan 4 41 C 38 C 28 C 24 C 2 FAN Outdoor Temp Step Compensation by Outdoor Temp Cooling Step_Fan 8 9 C Step_Fan 3 45 C Step_Fan 8 2 C Step_Fan 8 5 C Step_Fan 7 14 C Step_Fan 6 18 C Step_Fan St...

Page 131: ... up its revolution till 100 Hz Option 2 Every LEV have 350 pulse Option of opening when starts defrosting operation 3 Reversing valve is OFF after 5 seconds from arriving the compressor operating frequency of 30 Hz and then fans of indoor units turn OFF including the indoor unit with being OFF except the remote controller is being OFF 4 After 5 seconds minutes from the time arriving 30 Hz fans of ...

Page 132: ...o the normal condtiond control 2 3 Oil return control 2 3 1 Operating Contion 1 When the continuous running time is over 3hr option oil returning operation is made for 3min In case of the initial operation oil returning operation is made after completing initial operation 2 After defrost and oil returning operation the continuous running time is resetted 2 3 2 Operation Process 1 EEV Full open Hot...

Page 133: ...scosity in low outdoor temperature For the control compressor operates in low frequencies Operating condition in case of the following 3 conditions are fulfilled at the same time Outdoor temperature D pipe temperature Heat sink temperature below 0 C All Model is fitted with sump heater Comp Opening target 0 7 LEV 0 sec 90 300 sec Time option 15Hz starting starting OD temp 0 10 C ...

Page 134: ... Both cases unit will stop 2 Compressor working a If discharge pipe temperature T1 No limitation on compressor frequency b T2 discharge pipe temperature T off Hysteresis control Compressor frequency down by 5Hz and expansion valve up by 10 pulse in every 1 min c Discharge pipe temperature Toff Compressor will be off System will stop if this situation occurs 5 times in 1 hour and error code will be...

Page 135: ...ressor working a If discharge pipe temperature T1 Compressor ON LEV on time control b T2 discharge pipe temperature Toff Hysteresis control Expansion valve up by ßpulse every 1 min If LEV is in the starting control it will follow it as it is c Discharge pipe temperature Toff Compressor will be OFF System will stop if this situation occurs 5 times in 1 hour and error code will be generated COMP Ste...

Page 136: ...n CT sensing 3 CT 1 detection a If total current exceeds CT1 value reduce 1 step of operating Hz Step down 10Hz from current step If new Hz is below cooling Fc min heating Fh min then turn off the compressor b After step down if the total current exceed i1 for more than 5 sec then step down 1 more step c If the current continue below i1 for more than 1 min return the Hz to setting Hz 4 CT 2 detect...

Page 137: ... limitation on compressor frequency b T2 heat sink temperature Toff Compressor frequency down by 5 Hz c Heat sink temperature Toff Compressor will be off System will stop if this situation occurs 5 times in 1 hour and error code will be generated also self diagnosis will start If high temperature situation occurs 5 times in 1 hr system counts 1 error and after that 4 times if this situation occurs...

Page 138: ...Exploded View Replacement Parts List 138 Universal System Air Conditioner VII Exploded View Replacement Parts List Indoor Unit 139 Outdoor Unit 148 Panel Assembly Front 152 ...

Page 139: ...Exploded View Replacement Parts List Service Manual 139 266090 130411 354211 1 158591 330870 352118 1 266012 552111 159830 354211 2 249951 268714 349490 ATNH DL Ceiling Cassette Type Indoor Unit ...

Page 140: ...Exploded View Replacement Parts List 140 Universal System Air Conditioner 130411 346810 359012 130911 1 352150 2 W0CZZ 130911 2 267110 1 267110 2 ...

Page 141: ...ER ASSEMBLY 6711A20076J 6711A20076J 6711A20076J 6711A20076J R 330870 DRAIN PAN ASSEMBLY 3087A10006A 3087A10006A 3087A10006A 3087A10006A R 346810 MOTOR ASSEMBLY INDOOR 4681A20006Z EAU31304701 EAU31304701 EAU31304702 R 354211 1 EVAPORATOR ASSY BENDING 5421A10016A 5421A10016A 5421A10016A 5421A10016A R 354211 2 EVAPORATOR ASSY BENDING 5421A10016B 5421A10016B 5421A10016B 5421A10016B R 552111 TUBE ASSEM...

Page 142: ...ement Parts List 142 Universal System Air Conditioner 346810 359012 2 354210 552111 152302 352118 330870 W0CZZ 268714 249951 336610 2 267110 1 267110 1 336610 1 359012 1 336610 1 ABNH HL ABNH GL Ceiling Concealed Duct Type ...

Page 143: ...Exploded View Replacement Parts List Service Manual 143 152302 268714 267110 1 346810 336610 1 336610 2 359012 2 359012 1 354210 W0CZZ 249951 330870 ABNH RL ...

Page 144: ...BLOWER 5901A10028A R W0CZZ CAPACITOR DRAWING 2A00986D R 354210 EVAPORATOR ASSEMBLY FIRST 5421A10027A R 552111 TUBE ASSEMBLY DISTRIBUTOR 5211A20693E R 352118 TUBE ASSEMBLY MENIFOLD INDOOR 5211A20416J R 330870 DRAIN PAN ASSEMBLY 3087A10008A R 249951 CONTROL BOX ASSEMBLY INDOOR 4995A14002U R 268714 PWB PCB ASSEMBLY MAIN 6871A00090C R 267110 1 REMOTE CONTROLLER ASSEMBLY 6711A10008D R 152302 FILTER MEC...

Page 145: ... DRAWING 0CZZA20001B 0CZZA20001B 0CZZA20001B R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20212B 5421A20212B 5421A20210B R 330870 DRAIN PAN ASSEMBLY 3087A20025A 3087A20025A 3087A20025A R 249951 1 CONTROL BOX ASSEMBLY INDOOR 4994A20001C 4994A20001C 4994A22001C R 249951 2 CONTROL BOX ASSEMBLY INDOOR 4995A14002Z 4995A14002W 4995A14002X R 268714 PWB PCB ASSEMBLY MAIN 6871A00090J 6871A00090D 6871A00090E R 2...

Page 146: ...onditioner Ceiling Suspended 336600 1 359012 W0CZZ 346810 1 346810 2 336600 2 135515 2 330860 147581 147581 135312 249310 146811 W3110 268711 268711 1 249951 152302 267110 1 267110 2 354212 352118 135303 137211 135515 1 237202 567480 1 567480 2 567480 3 AVNH KL LL ...

Page 147: ...995A10159T R 268711 PCB Assembly Main 6871A10186E 6871A10186N 6871A10186F 6871A10186G R W3110 Case 3110A20118A 3110A20118A 3110A20118A 3110A20118A R 268711 1 PCB Assembly Display 6871A20096B 6871A20096B 6871A20096B 6871A20096B R 567480 3 Thermistor NTC Eva Out Senser 6323AQ3226W 6323AQ3226W 6323AQ3226W 6323AQ3226W R 567480 1 Thermistor NTC Air Senser 6323A30004A 6323A30004A 6323A30004A 6323A30004A...

Page 148: ...546810 1 546810 2 559010 554160 550140 349600 554030 447910 430411 435512 435301 349480 437211 137213 2 137213 1 435300 552117 552112 552111 268711 1 268711 566001 552116 435511 649950 552203 1 552203 2 552204 552114 261704 662000 W0FZZ W0CZZ 561410 1 561410 2 566000 2 566000 1 567480 2 567480 1 555300 661400 552200 ...

Page 149: ...400 Coil 6141A30003M R 447910 Barrier Assembly Outdoor 4791A10019D R 349600 Bracket Motor 4960A10012B R 546810 1 Motor Assembly AC Upper 4681AR1392Y R 546810 2 Motor Assembly AC Lower 4681AR1392Z R 559010 Fan Assembly Propeller 5901A10033A R 261704 Transformer Reactor 5874A90001J R 649950 Case Assembly Control Outdoor 4995A10196B R W0FZZ Fuse 0FZZA90001M R W0CZZ Capacitor Film Box 3H00660P R 56748...

Page 150: ...68711 666000 658740 668510 668713 W0FZZ 649950 662000 668712 447910 566001 566000 430410 546810 546810 548490 552113 55211G 552112 552115 263230 2 263230 1 554031 559010 437210 435511 435301 137212 554160 552203 2 552203 1 561411 561410 2 561410 1 552204 561410 552116 Model No AUUW428C AUUW488C AUUW608C ...

Page 151: ...UBE ASSEMBLY EXPANSION 5211A24126A 5211A24126A 5211A24126A R 552203 1 VALVE SERVICE Ø19 05 2A00499L 2A00499L 2A00499L R 552203 2 VALVE SERVICE Ø9 52 5220A20001E 5220A20001E 5220A20001E R 552204 VALVE SOLENOID BODY 5220A90002H 5220A90002H 5220A90002H R 554031 CONDENSER ASSEMBLY BENT 5403A20193A 5403A20193A 5403A20193A R 554160 COMPRESSOR 5416A90008H 5416A90008H 5416A90008H R 559010 FAN ASSEMBLY PRO...

Page 152: ...Exploded View Replacement Parts List 152 Universal System Air Conditioner 152312 135314 146811 137211 268712 135802 PT HDA1 C1 Panel Assembly Front ...

Page 153: ...0106Z R 135314 GRILLE ASSY INLET 3531A10066A 3531A10066A R 152312 FILTER ASSY AIR CLEANER 5231A10004A 5231A10004A R 146811 MOTOR ASSEMBLY STEP 4681A20055A 4681A20055A R 268712 PWB PCB ASSEMBLY DISPLAY 6871A20096J 6871A20096J R 135802 DOOR 3580A20005A 3580A20005A R PT HDA1 PT HDC1 LOCATION No DESCRIPTION Part No SVC CODE ...

Page 154: ...P No MFL30301501 Printed in Korea ...

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