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LG AS-H076PB/D/M/WL1 User's Manual

1. Service Manual 57 Exploded View Outdoor Unit AS H096PB D M WL1 A 12AH MAP 22277 58 Room Air Conditioner Replacement Parts List Replacement Parts List Indoor Unit ER DESCRIPTION REMARKS No AS H076PB D M WL1 AS HO96PB D M WL1 12 series 131410 CHASSIS ASSEMBLY 314
2. Liquid side 2 way valve DIM Ge AS H096PB D M WL1 AS H126PB D M WL1 mm 770 H mm 540 D mm 245 L1 mm 285 L2 mm 64 L3 mm 518 L4 mm 10 L5 mm 100 10 Room Air Conditioner Product Specifications Product Specifications Table 1 Item Model Name Unit AS H076PB D M WL1 AS H096PB D M W L1 A 12AH series Cooling Capacity Btu h Heating Capacity 7500 9200 12000 7700 9400 12200 Moisture Removal I h 1 1 2 1 5 Power Source V Hz 10 220 240V 50Hz 10 220 240 50Hz 10 220 240 2 Air Circulation Indoor Outdoor m min 5 5 6 8 8 3 20 26 26 Noise Level Outdoor Indoor dB 3 37 39 44 48 48 48 Input Cooling W Heating 685 840 1099 705 860 1200 Running Current Cooling A Heating 3 3 8 4 9 3 1 3 85 5 3 E E R Cooling Btu nW 10 95 10 95 10 92 C O P Heating 3 2 3 2 2 98 Motor Output Outdoor Indoor 24 24 24 18 25 5 25 5 Dimensions WxHxD Indoor Outdoor 570 x 568 x 137 570 x 568 x 137 570 x 568 x 137 575 x 525 x 260 770 x 540 x 245 770 x 540 x 245 Net Weight Indoor k Outdoor 9 9 9 9
3. ino IN ien EO ao ani use MED E GAB u MT PW H HS HIHO HZMO HPBO weg Mey Dees ale Wen Hwza NO HNONOO NO Deg wun m O EI CED or for zou dios 985 054 EOL vii VLOOI Ans HLAVE 50 d S3 Age aula Nid SAH Diere EN AS Joe ez depre pe ops ler 2 77 pony vio er 3499 910250 INI AS qo 486 18013 eene EN m a104 AS zur AS X HO1ON dais UIS Avidsia ILE OTF ORO m z edi SE WZO03NHOWIO mmm SIT DE siete Eren T DEEN er ps sfesfspsfes es zs es osfoo 9 zo dais DH 000 aoza E Dr Er mavrooeNTn Js HM LaNO HM LET NO ave or Fr fer fer NavvoozN1n 99003 1 z fe fs WSv 804 ans d 000 00 9 15 Schematic Diagram e Heat Pump
4. Air Circuit Breaker Use a circuit breake or time delay fuse between power source and the unit as shown by CAUTION The power cord connected to the A unit should be selected according to the following specifications Type B approved by HAR or SAA mm Grade Bk 9k 12k 14k 18k 24 28 30k 32k 36k 38k 0 75 1 0 15 25 25 5 5 Unit A Indoor Indoor Indoor Indoor Outdoor Outdoor Cable Type B H05VV FH05VV F H05VV FH05VV FH05RN FH05RN F NORMAL CROSS SECTIONAL AREA A The power connecting cable connecting the indoor and outdoor unit should be selected according to the following specifications Type B approved by HAR or SAA MN ai Se NORMAL mm CROSS SECTIONAL mm AREA 0 7 NORMAL Grade SH Grade CROSS NORMALCROSS SECTIONAL 12k 14k 18k 24k 28k SECTIONAL AREA 30k 32k 36k 38k AREA 0 75 1 0 15 25 0 75 0 75 Cable Type B HOTRN F HOTRN F HOTRN E Cable Type B HO7RN F HO7RN F Service Manual 19 Installation Remove the control cover from the unit by loos Outdoor Unit ening the screw Connect the wires to the terminals on the control board individually Terminal block 2 Secure the cable onto the control board with the cord clamp 3 Refix the control cover to the original position Connecting cable with the screw
5. website http www lgservice co LG E uu J B A NIT READ THE SAFETY D SERVICE PERSONNEL Air Conditioner Service Manual TABLE OF CONTENTS LG Model dc eo etr Ra Te NE 3 twee eMe 4 DIMENSIONS sene 8 Symbols used in this MANUS steenen dennen a 8 nn 8 DUI Unit ana uaqta aga E ee ns 9 Product Specitications u u valenta 11 E LEE 12 select Best Location E eterniet tene aaa kins 12 Piping Length and TATOO a ee aa 12 Preparing Work for Installation l I td 13 Fixing the Indoor Unit L 14 Drill a Hole in the Wall ose ee 14 ESTAMOS ido 15 Connecting the PIDINGS etten tee 16 Connecting the Cables to the Indoor UDIE eenegen ents heen oe eee 19 Connecting the Cables to the Outdoor Unit nn 20 CHECKING TG Drainage ua RETE 21 Formingth PII Le 21 Air A A aandeden ele A ds 22 Air Purging with Vacuum reek 22 Front Panel Assembly usu un tienen 24 TeSt RUNNING ua e at 25 enr m HQ 26 FRICTION TOT COUN Ses so er a eC mL e EL M dep LM quay 26
6. Foamed polyethylene or equivalent is recommended 16 Room Air Conditioner Connecting the pipings with the indoor unit and drain hose with drain pipe 1 Align the center of the pipings and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a wrench Outside diameter Torque mm inch kg m 06 35 1 4 1 8 09 52 3 8 42 012 7 1 2 5 5 015 88 5 8 6 6 019 05 3 4 6 6 3 When extending the drain hose at the indoor unit install the drain pipe Wrap the insulation material around the connecting portion 1 Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there may be no gap 2 Wrap the area which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrap ping them with vinyl tape over the range within which they fit into the rear piping housing section Installation ps 0207 Indoor unit tubing Flare nut Pipes Indoor unit drain hose Adhesive Vinyl tape narrow Plastic bands Insulation material Connection Indoor pipe unit pipe Vinyl tape Wrap with vinyl tape wide Connecting cable Vinyl tape narrow Wrap with vinyl tape Vinyl tape wide Drain hose Service Manual 17 Installation Outdo
7. Connecting cable 4 Use a recognized circuit breaker A between the power source and the unit A disconnecting device to adequately disconnect all supply lines must be fitted Cover control Circuit Grade Breaker 7K 18K 26 30K 38K A 15 20 30 40 CAUTION After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power circuit specifically for the air conditioner As for the method of wiring be guided by the circuit diagram posted on the inside of control cover 2 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 are all tightly fastened If they are loose it could cause burn out of the wires 3 Specification of power source 4 Confirm that electrical capacity is sufficient 5 See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 6 Confirm that the cable thickness is as specified in the power source specification Particularly note the relation between cable length and thickness Refer to page 19 7 Always install an earth leakage circuit breaker in a wet or moist area 8 The following would be caused by voltage drop Vibration of a magnetic switch which will damage the contact point fuse b
8. Otherwise it may electrical shock Otherwise it may cause the failure of They are sharp and may cause and failure machine or electrical shock Do not step on the indoor outdoor unit and do Do not place a heavy object on the power cord not put anything on it It may cause an injury through dropping of the unit or Otherwise it may cause a fire or electrical shock falling down When the product is submerged into water Take care so that children may not step on the always contact the service center outdoor unit Otherwise it may cause a fire or electrical shock Otherwise children be seriously injured due to falling down 6 Room Air Conditioner Safety Precautions ACAUTION B Installation Install the drain hose to Install the productsothatthe Always inspect gas leakage ensure that drain can be noise or hot wind from the after the installation and repair securely done outdoor unit may not cause of product any damage to the neighbors Otherwise it may cause water leak e Otherwise it may cause dispute with Otherwise it may cause the failure of age the neighbors product Operation Keep level parallel in installing the product Avoid excessive cooling and perform ventila tion sometimes Otherwise it may cause vibration or water leakage Otherwise it may do harm to your health Use a soft cloth to clean Do not use wax thin When gas leaks open the windo
9. The air conditioner is now ready for use PUMP DOWN This is performed when the unit is to be relocated or the refrigerant circuit is serviced Pump Down means collecting all refrigerant in the outdoor unit without loss in refrigerant gas CAUTION Be sure to perform Pump Down procedure with the unit cooling mode Pump Down Procedure 1 Connect a low pressure gauge manifold hose to the charge port on the gas side service valve 2 Open the gas side service valve halfway and purge the air from the manifold hose using the refrigerant gas 3 Close the liquid side service valve all the way in 4 Turn on the unit s operating switch and start the cooling operation 5 When the low pressure gauge reading becomes 1 to 0 5kg cm2 G 14 2 to 7 1 P S I G fully close the gas side valve stem and then quickly turn off the unit At that time Pump Down has been completed and all refrigerant gas will have been collected in the outdoor unit Service Manual 25 Operation l operation DISPLAY 1 C O Model high quality LCD remote controller supplied Operation Indicator On while in appliance operation off while in appliance pause Timer Indicator On while in timer mode on off and in sleep timer mode off when timer mode is completed canceled Comp Running Indicator While in appliance operation on while in outdoor unit compressor running off while in compressor off Pla
10. 23 35 35 Refrigerant g 750 R410A 870 R410A 880 R410A Airflow Direction Control Up amp Down O O O Remocon Type L C D Wireless L C D Wireless L C D Wireless Service Valve Liquid inch mm Gas 1 4 6 35 1 4 6 35 1 4 6 35 3 8 9 52 3 8 9 52 1 2 12 7 Sleeping Operation O O O Drain Hose O O O Connecting Cable p mm 3 1 0mm 2 0 75mm 3 1 0mm 2 0 75mm2 3 1 0mm 2 0 75mm Power Cord p mm 3 1 0mm2 3 1 0mm2 Service Manual 3 1 0mm2 11 Installation HE Installation Indoor unit Do not have any heat or steam near the unit Select a place where there are no obstacles in front of the unit Make sure that condensation drainage can be con veniently routed away Do not install near a doorway e Ensure that the space around the left and right of the unit is more than 50cm The unit should be installed as high on the wall as possible allowing a minimum of 10cm from ceiling Use a stud finder to locate studs to prevent unnec essary damage to the wall More than 10cm More than 50cm Ke More than 50cm More than 2m 1 CAUTION install the indoor unit on the wall A where the height from the floor is more than 2 meter Outdoor unit If an awning is built over the unit to prevent direct sunlight or rain exposure make sure t
11. Display Ter EE 33 Si A 34 Remote Control e E 35 RE 36 ALOT EE 36 Schematic Diagram inopem 38 Electric control BSUBE satan edere ee 38 Wiring e 39 Components Lo6allOlt a etienne eene 40 Troubleshooting Guide e reeet iii 42 Refrigeration Cycle Diagram rende eene orentis eed ante 42 2 Way Way VANS otten eee dean ede ea erdee pete 43 O 48 Electronic Pasos ooo eeen 49 Exploded Veedel 56 Indoor c 56 A adt 57 Replacement Parts List dates 59 aaa 59 07 ree Mp E dd a E do det 60 2 Room Air Conditioner B LG Model Name 1 2 3 4 5 6 7 8 9 10 Code Type Code of Model Meaning 1 Producing Center A Z L Chang won R22 N India Refrigerant Chang won R410A Z Brazil Chang won R407C D Indonesia T China M Mexico K Turkey R22 V Vietnam E Turkey R410A S Out Sourcing H Thailand 2 Product Type A Z S Split Type Air Conditioner 3 Cooling Heating Inverter A Z C Cooling only V AC Inverter C O H Heat pump N AC Inverter H P X C O E Heater Q DC Inverter C O Z H P E Heater W DC Inverter H P 4 5 Capacity 0 9 Cooling Heating Capacity Ex 09 9 000 Btu h 6 Electric Range 1 9 1 115V 60Hz A 220V 50Hz 3Phase A Z 2 220V 60Hz B 208 230V 60Hz 3Phase 3 208 230V 60Hz C 575V 50
12. OK About 220 240V 50Hz Main power s voltage l L Voltage applied to the unit Connecting method of Indoor Outdoor connecting cable Check each load Indoor Outdoor Fan Motor Check PWB Assembly Compressor Stepping Motor and contacting Fuse condition of related connector Pattern damage Varistor ZNR01N QUE Check the connection housing for contacting e Connector related to CN POWER1 2 Connector related to CN MOTOR Connector contacting of Outdoor Fan Compressor Display PWB Assembly Check E Main PCB Board Operation Check Items Content Remedy SMPS Transformer Indoor unit Input Voltage About AC220V 240V 10 Check the power voltage Replace Trans Output Voltage About DC12V IC04D 7805 Output DC 5V Replace IC04D db ICO1A Reset OSC01B 8MHz Voltage of Micom No 36 e Replace faulty parts DC 4 5V over and Soldering condition Service Manual 49 Troubleshooting Guide The product does not operate with the remote controller Turn on Main Power i While the compressor has been stopped the compressor does not operate owing to the delaying function for 3 minutes after stopped m low speed by force When the compressor stopped Indoor Fan is driven by a low speed At this point the wind speed is not controlled by the remote c
13. and fix attention completely the upper screws Wer AL M Plastic anchors dk Hanger hole Rear side of the Q 10 In case of nothing wrong connect the pipe and the wire Refer to installation manual Drill the piping hole with a 50mm hole core drill Drill the piping hole at either the right or the left with WALL the hole slightly slanted to the outdoor side Indoor Outdoor 5 7mm 14 Room Air Conditioner Installation Main cause for gas leakage is due to defect in flaring work Carry out correct flaring work in the following procedure Cutting the pipes and the cable 1 Use the piping kit accessory or the pipes purchased locally 2 Measure the distance between the indoor and the out door unit x Slanted Uneven Rough 74 dg 3 Cut the pipes a little longer than measured distance 4 Cut the cable 1 5m longer than the pipe length Removing burrs Pipe 1 Completely remove all burrs from the cut cross section of CA Reamer pipe tube NS 2220 2 Put the end of the copper tube pipe in downward direc pana EN tion as you remove burrs in order to avoid dropping burrs SC into the tubing Putting nut on Flare nut e Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr Co
14. is the product randomly place that ther is concern of not damaged due to use for a falling down long time may cause injury or an accident It will cause a fire or electrical shock Otherwise it may result in personal injury Operation Use caution when unpacking Do not share the outlet with Do not use the damaged and installing other appliances power cord Sharp edges may cause injury It will cause an electric shock or a Otherwise it may cause a fire or fire due to heat generation electrical shock Do not modify or extend the Take care so that the power Unplug the unit if strange power cord randomly cord may not be pulled during sounds smell or smoke operation comes from it Otherwise it may cause a fire or Otherwise it may cause a fire or Otherwise it may cause electrical electrical shock electrical shock shock or a fire Service Manual 5 Safety Precautions Keep the flames away Take the power plug out if neces Do not use the power cord sary holding the head of the plug near the heating tools and do not touch it with wet hands Otherwise it may cause a fire Otherwise it may cause a fire or electrical shock Otherwise it may cause a fire and electrical shock Do not open the suction inlet Do not allow water to run into of the indoor outdoor unit dur electrical parts ing operation Never touch the metal parts of the unit when removing the fil ter
15. mode the compressor the outdoor fan and the 4 way valve are off and only the indoor fan is operated for 15 seconds Then an operation mode is selected according to the intake air temp at that moment as follows 24 C lt Inatake Air Temp gt Fuzzy Operation for Cooling 21 C lt Inatake Air Temp lt 24 C gt Fuzzy Operation for Dehumidification Inatake Air Temp lt 21 C gt Fuzzy Operation for Heating If any of the operation modes among cooling dehumidification heating mode operations is carried out for 10 sec or longer before Fuzzy operation the mode before Fuzzy operation is operated 1 Fuzzy Operation for Cooling According to the setting temperature selected by Fuzzy rule when the intake air temp is 0 5 C or more below the setting temp the compressor is turned off When 0 5 C or more above the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C At the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 26 C lt Intake Air Temp gt 25 C 24 C lt Intake Air Temp lt 26 C gt Intake Air Temp 1 C 22 C lt Intake Air Temp lt 24 C gt Intake Air Temp 0 5 C 18 C lt Intake Air Temp lt 22 C gt Intake Air Temp Intake Air Temp lt 18 C gt 18 C When the Fuzzy key Temperature Control key is input after the initial sett
16. not About 10kQ at 25 d Check Relay RY COMP for driving compressor When the power About AC220V 240V is applied to the connecting wire terminal support transferred to compressor PWB Assembly is normal Check the circuit related to the relay Check point COMP ON COMP OFF Between Micom No 63 and GND DC5V DCOV Between ICO2M No 14 Below DC 1V t DC12V and GND app off Main Power Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor Check the open or short of conmecting wires between indoor and outdoor Service Manual 51 Troubleshooting Guide When Indoor Fan does not operate Turn off Main power d Check the connection of CN MOTOR1 2 d Check the Fan Motor d Check the Fuse AC250V 3 15A d Check PWM signal from Micom Pin 50 Check On Off signal from micom pin14 Check Voltage of CN Motor 1 2 is about 15V Turn ON Main Power Fan can t operate for dehumidifying mode Change operation for cooling mode 52 Room Air Conditioner Troubleshooting Guide When Louvers do not operate Confirm that the Louver is normally geared with the shaft of Stepping Motor f the regular torque is detected when rotating
17. the 3 way valve 3 To open the 2 way valve turn the valve stem coun terclockwise approximately 90 wait for about 2 3 sec and close it Close 4 Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connec tions by a soft brush to check for leakage of the connecting points of the piping 5 If bubbles come out the pipes have leakage Cap 3 Evacuation Connect the charge hose end described in the pre ceding steps to the vacuum pump to evacuate the tubing and indoor unit Confirm the Lo knob of the manifold valve is open Then run the vacuum pump The operation time for evacuation varies with tub Indoor unit ing length and capacity of the pump The following table shows the time required for evacuation Required time for evacuation when 30 gal h vacuum pump is used If tubing length is less than 10m if tubing length is longer than 10m 33 ft 33 ft 10 min or more 15 min or more When the desired vacuum is reached close the Lo knob of the manifold valve and stop the vacu um pump 4 Finishing the job With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve the valve stem of gas side valve counter clockwise to fully open the valve Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove t
18. the Louver with hands Normal LL Check the connecting condition of CN UD LR1 LR2 Connector Check the soldering condition on PWB of CN UD LR1 LR2 Connector Check the operating circuit of the Louvers e Confirm that there is DC 12V between pin of CN UD and GND Confirm that there is soldering short at following terminals Between 09 46 49 69 59 59 6 69 60 69 63 of Between 42 p of IC02M Between 40 42 43 4 of IC03M Between 2 5 42 0 4 of ICOAM Between 4 of CN UD LR1 LR2 Sud If there are no problems after above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Louvers Service Manual 53 Troubleshooting Guide When Heating does not operate Turn ON Main Power k least Operate Heating Mode x by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2 C at In heating Mode the indoor fan operates case the pipe temperature is higher than 28 C es Check the connector of intake and pipe sensor thermistors e Check the related circuit of RY 4WAY Check the indoor room temperature is disconnected not about 10KQ at 25 C e Check the indoor pi
19. the system is not going to be used for a long time Settlement of outdoor unit Anchor the outdoor unit with a bolt and nut c 10mm tightly 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 wind and earthquake In the case when the vibration of the unit is con veyed to the hose secure the unit with an anti vibration bushing Bolt Tubing connection Evaluation of the performance Operate unit for 15 20 minutes then check the system refrigerant charge 1 Measure the pressure of the gas side service valve 2 Measure the temperature of the intake and discharge of air 3 Ensure the difference between the intake tempera ture and the discharge is more than 8 C 46 F Cooling or Heating Intake temperature Discharge air f Discharge temperature 4 For reference the gas side pressure of optimum condition is as below Cooling Outside ambient The pressure of the gas side Refrigerant TEMP service valve R 22 35 C 95 F 4 5kg cm G 56 8 71 0 P S I G R 410A 35 C 95 F 8 5 9 5kg cm G 120 135 5 1 9 If the actual pressure is higher than shown the system is most likely over charged and charge should be removed If the actual pres sure are lower than shown the system is most likely undercharged and charge should be added
20. wire from the product Panel Front Connector Remove pipe cover and side cover 1 Remove two screws for fixing pipe cover 2 Pull up the side cover of desired connecting direction and then side cover is separated 3 Pick the pipe hole of the side cover CAUTION After removing the pipe hole cut the burr for safety When making pipe path through rear wall you don t need to pick the pipe hole Drain hose junction 1 Remove the rubber stopple in the desired drain direc tion 2 Insert drain hose into the handle of drain pan and join drain hose and connecting hose according to the figure by Only the desired direction Connecting part Drain hose rubber cap Service Manual 13 Installation 1 Attach an Installation guide map on the 6 Look at suited horizon by horizontal desired surface meter on the horizontal setting line and INSTALLATION GUIDE MAP fix lightly the map by adhesive tape 2 Make a hole with a diameter of 6mm and 7 Drill the pierted part as a diameter of 50mm depth of 30 35mm by piercing a screw for connecting piping In case of piercing point surface 8 First Drive the two points of the upper parts by screws Leave 10mm for hanging the product Plastic anchors 4 Hang the hole of product at the upper 9 Drive the lower parts after facing the hole screws and remove the map Falling of product with plastic anchors
21. with the Chaos Swing or they are fixed to the desired direction B Chaos Natural Wind Mode When the Chaos Natural Wind mode is selected and then operated the high medium or low speed of the air flow mode is operated for 2 15 sec randomly by the Chaos Simulation Jet Cool Mode Operation C O Model If the Jet Cool key is input at any operation mode while in appliance operation the Jet Cool mode operates e In Jet Cool mode the indoor fan is operated at super high speed for 30 min at cooling mode operation In the Jet Cool mode operation the room temperature is controlled to the setting temperature 18 When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority During the JET COOL function at any moment the A C starts to blow the cool air with side louvers closed at extremely high speed for 30 minutes setting the room temp automatically to 18 C Jet Cool Mode Operation H P Model e While in heating mode or Fuzzy operation the Jet Cool key cannot be input When it is input while in the other mode operation cooling dehumidification ventilation the Jet Cool mode is operated In the Jet Cool mode the indoor fan is operated at super high speed for 30 min at cooling mode operation In the Jet Cool mode operation the room temperature is controlled to the setting temperature 18 When the sleep timer mode is input while in the Jet Cool mo
22. 0439C R 268717 PWB PCB ASSEMBLY SUB 6871A20363D 6871A20363D 6871A20363D R 330870 DRAIN PAN ASSEMBLY 3087A30004A 3087A30004A 3087A30004A R 346810 MOTOR ASSEMBLY INDOOR 4681A20091A 4681A20091A 4681A20091A R 352115 TUBE ASSEMBLY EVAPORATOR IN j j 5211A20302B R 352116 TUBE ASSEMBLY EVAPORATOR OUT 5 5211A20301B R 35211B TUBE ASSY TUBING 5211AR7066F 5211AR7066F 5211AR7066D R 352150 HOSE ASSEMBLY DRAIN 5251AR1222R 5251AR1222R 5251AR1222R R 352380 AIR GUIDE 5238A20020A 5238A20020A 5238A20020A R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20072A 5421 20072 5421 20072 359012 FAN TURBO 5900A00003A 5900A00003A 5900A00003A R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com Service Manual 59 Replacement Parts List Outdoor Unit LOCATION PART No No ia AS H076PB D M WL1 AS HO96PB D M WL1 12 series lea 430410 BASE ASSY OUTDOOR 3041A20016A 3041A20008K 3041A20008K R 435301 GRILLE DISCHARGE 3530A20006B 3530A20006B R 435511 COVER ASSEMBLY CONTROL OUTDOOR 35514300230 3551A30023E 3551A30023E R 437210 PANEL ASSEMBLY FRONT OUTDOOR 3720A10171A 3721A20027B 3721A20027B R 437212 PANEL ASSY REAR OUTDOOR 3720A10172A 3721A20026B 3721A20026A R 447910 BARRIER ASSEMBLY OUTDOOR 4790A10025B 4791A30002A 4791A30002A R 546810 MOTOR ASSEMBLY OU
23. 1A20004N 3141A20004D 3141A20004N R 135303 GRILLE INLET 3530A20077F 3530A20077F 3530A20077F R 135311 1 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A20069G 3531A20069G 3531A20069G R 135311 2 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A20069H 3531A20069H 3531A20069H R 135311 3 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A20069J 3531420069 3531420069 135312 GRILLE ASSEMBLY FRONT INDOOR 3531A20213E 3531A20213E 3531A20213E R 135314 GRILLE ASSEMBLY INLET 3531A20212E 3531A20212E 3531A20212E R 135500 1 COVER 3550A20123A 3550A20123A 3550A20123A R 135500 2 COVER 5 k 3550A20124A R 135500 3 COVER 3550A20060A 3550A20060A 3550A20060A R 135515 COVER ASSEMBLY TOP INDOOR 3551A20031B 3551A20031B 3551A20031B R 146811 MOTOR ASSEMBLY STEP 4681A20055A 4681A20055A 4681A20055A R 147581 LOUVER HORIZONTAL 4758A20014B 4758A20014B 4758A20014B R 152302 FILTER MECH A C 5230A20032A 5230A20032A 5230A20032A R 159830 AIR CLEANER ASSEMBLY 5983A20007F 5983A20007F 5983A20007F R 249951 CONTROL BOX ASSEMBLY INDOOR 4995A20372Q 4995A20372E 4995A20372A R 263230 THERMISTOR ASSEMBLY 6323A20004N 6323A20004N 6323A20004N R 264110 POWER CORD ASSEMBLY 6411 200145 6411 200145 6411 200145 R 267110 REMOTE CONTROLLER ASSEMBLY 6711A20073Z 6711A20073Z 6711A20073Z R 268712 PWB PCB ASSEMBLY DISPLAY 6871A20462A 6871A20462A 6871A20462A R 268714 1 PWB PCB ASSEMBLY MAIN 6871A10121A 6871A10121A 6871A10121A R 268714 2 PWB PCB ASSEMBLY MAIN DC 6871A20439J 6871A20439D 6871A2
24. 3 way valve to the closed position Do this quickly so that the gauge ends up indi cating 3 to 5kg cm g 8 Disconnect the charge set and mount the 2 way and 3 way valve s stem nuts and the ser vice port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage Troubleshooting Guide Balance Refrigerant of the 3 way Valve Gas leakage Outdoor unit e Procedure 1 Confirm that both the 2 way and 3 way valves 3 Open the valve Lo side on the charge set and are set to the back seat discharge the refrigerant until the gauge indi cates 0 kg cm G 2 Connect the charge set to the 3 way valve s If there is no air in the refrigerant cycle the port pressure when the air conditioner is not running Leave the valve on the charge set closed is higher than 1 kg cm G discharge the refrig Connect the charge hose to the service port erant until the gauge indicates 0 5 to 1 kg cm G if this is the case it will not be neces sary to apply a evacuatin Discharge the refrigerant gradually if it is dis charged too suddenly the refrigeration oil will also be discharged Service Manual 45 Troubleshooting Guide Evacuation All amount of refrigerant leaked AN a Ll Outdoor unit e Procedure 1 Connect the vacuum pump to the center hose of charge set center hose 2
25. 888888 PWB ASM 6871A20363 88888888888888888 CN D2 PWB 6870A90126B 8 8 8 888888888 d CN D1 H 888888888888888 9 CRISE CN 12V WH J 88888 8888 GER 1 CN SW BL 8888802 E 8 8 8 8 8888 CN D6 i CN D8 e elelejele O Service Manual 41 Troubleshooting Guide Troubleshooting Guide 1 Cooling Only Models INDOOR UNIT OUTDOOR UNIT CAPILLARY TUBE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER GAS SIDE COMPRESSOR 2 Cooling amp Heating Models INDOOR UNIT OUTDOOR UNIT oo CHECK VALVE Heating Model only lt 000 CAPILLARY TUBE LIQUID SIDE EVAPORATOR CONDENSER y D eer 2 REVERSING ACCUMU VALVE LATOR o Heating Model Only COMPRESSOR COOLING lt HEATING 42 Room Air Conditioner Troubleshooting Guide 2 way Valve Liquid Side 3 way Valve Gas Side Hexagonal wrench 4mm Flare nut Open position Closed position To piping connection To outdoor unit Valve cap Open position Closed position Flare nut piping connection Service Service port port To outdoor unit Works Shaft position Shaft position Service port Shippin Closed Closed Closed pping with valve cap with valve cap with cap Air purging Open Closed Open Installation coun
26. AC PART e HEAT PUMP MODEL CN MOTOR2 CN MOTOR1 O ol o M o RIID_Y 070 R06D MAIN P W B ASSEMBLY DC PART e TOP VIEW e BOTTOM VIEW CN LRICHED CN HUBCBL DOE Cant ADIOS chee senii OOO CN LR2CHED 8 4 en ASM 6871820439 EN THICHH E INININ ISES HEAD HERO J 40 Room Air Conditioner Schematic Diagram DISPLAY ASSEMBLY 6871A20462 TOP VIEW CN MAINL O e e RECEIUER 503505000870984 O CN MAIN2 888 O gt O BOTTOM VIEW 1032 O eee auma 8 8 8 8 8 8 8 8 8 8 8 8 8 9 8 m Cun gt O br 2 SUB P W B ASSEMBLY CN D4 f O 888
27. Air Conditioner operation Plasma air cleaner function will be operated while in any operation mode with selecting the function The function is to be stopped while it is operating with selecting the function When air cleaner function is selected during operation off The function will be only operated When inlet grille of air conditioner is opened during plasma operation High Voltage Generator H V B is to be stopped When inlet grille of air conditioner is closed during plasma operation High Voltage Generator H V B will be operated again 32 Room Air Conditioner 1 Heating Model Operation Indicator Cooling Soft Dry Fan Heating Sleep Timer Indicator Sleep Mode Timer Indicator Timer Mode Defrost Indicator Hot start Defrost PLASMA Indicator PLASMA Mode 2 Cooling Model Operation Indicator Cooling Soft Dry Fan Sleep Timer Indicator Sleep Mode Timer Indicator Timer Mode Outdoor Unit Operation PLASMA Indicator PLASMA Mode Service Manual Operation 33 Operation lt 3sec gt 4 3sec di 3sec di thermistor open short Error Error Display LED Coda Indoor body operation LED Error contents SVC check point Indoor room temperat
28. Evacuation for approximately one hour Confirm that the gauge needle has moved toward 76 cmHg vacuum of 4 mmHg or less 46 Room Air Conditioner 3 Close the valve Lo side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approxima tely 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Troubleshooting Guide Gas Charging After Evacuation Outdoor unit Check valve Charging cylinder e Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you dis con nected from the vacuum pump to the valve at the bottom of the cylinder If you are using a gas cylinder also use a scale and reverse the cylinder so that the sys This is different from previous procedures Because you are charging with liquid refrigerant from the gas side absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner 4 Immediately disconnect the charge hose from tem can be charged with liquid the 3 way valve s service port 2 Purge the air from the charge hose Stopping partway will allow the gas to be dis Open the valve at the bottom of the cylinder charged and press the check valve on the cha
29. Hz 3Phase 5 200 220V 50Hz D 440 460 60Hz 3Phase 6 220 240V 50Hz E 265V 60Hz 7 110 50 60Hz F 200 50 60Hz 8 380 415V 50Hz 9 380 415V 60Hz 7 Chassis A Z Name of Chassis of Unit Ex LSP gt SP Chassis 8 Look A Z Look Color Artcool Model 9 Function A Z Basic A Basic 4Way B Plasma Filter C Plasma Filter 4 Way D Tele LCD E Tele LCD Nano plasma 4Way F Nano Plasma F A changeove A clean Low A G Nano Plasma F A changeove A clean 4way Low A H Tele LED 4way Internet J Plasma F 4Way Oxy generator K Nano Plasma F A changeove A clean L Nano Plasma F A changeove A clean 4way M Nano Plasma F A changeove A clean PTC N Nano Plasma F A changeove Autoclean 4way PTC P Nano Plasma F A changeove A clean 4way Low A PTC Q Negative ION A Clean R Nano Plasma Negative ION A Clean 5 4way Nano Plasma F Negative ION Healthy dehumidification A Clean T Nano Plasma F 4Way A changeove A clean U 10 Serial No 1 9 LG Model Development Serial No ARTCOOL COLOR Mirror White Blue Wood Metal OZOUUW lt w Cherry Service Manual 3 E Safety Precautions To prevent injury to the user or other people and property damage the following instructions must be followed Incorrect operation due to ignoring instruction will cause harm or damage The seriousness is classified by the following indications A WARNI
30. Model 38 Room Air Conditioner Schematic Diagram Schematic Diagram Indoor Unit S AC PWB ASM C DOPWEASM EB 5 or Bei qe 6 P 5 2 19 6 7 1 STEP d z MOTOR BL Ribbed 5 A BR Plained 1 CN POW2 3 8 5 3 UN S HN 2 43 T 4 8 2 2 o HE 1 1 4 5 F r 10 CN D2 WH es eM gt ETE 1 1 CONNECT Bose Sg A PCBASM ES S 77 Ae 3854A20374A Outdoor Unit AS H076PB D M WL1 3 REVERSING TERMINAL BLOCK TO INDOOR UNIT OUTDOOR WIRING DIAGRAM 3854A30077V AS H096PB D M WL1 AS H126PB D M WL1 GN YL FAN MOTOR CAPACITOR BR BL GN YL TERMINAL T T T 1 1 1 l l 1 G BRI BLIGNYLI BK RD y V y poe TO INDOOR UNIT 4 1 1 1 lt OUTDOOR WIRING DIAGRAM 3854A30077D Service Manual 39 Schematic Diagram MAIN P W B ASSEMBLY
31. NG This symbol indicates the possibility of death or serious injury ACAUTION This symbol indicates the possibility of injury or damage to properties only y Meanings of symbols used in this manual are as shown below 9 sure not to do Be sure to follow the instruction A WARNING B installation Always perform grounding Don t use a power cord a plug For installation of the product or a loose socket which is always contact the service center or damaged a professional installation agency Otherwise it may cause electrical Otherwise it may cause a fire or Otherwise it may cause a fire elec shock electrical shock trical shock explosion or injury Securely attach the electrical Always install an air leakage Do not keep or use flammable part cover to the indoor unit breaker and a dedicated gases or combustibles near and the service panel to the switching board the air conditioner outdoor unit If the electrical part cover of the No installation may cause a fire and Otherwise it may cause a fire or the indoor unit and the service panel of electrical shock failure of product the outdoor unit are not attached securely it could result in a fire or electric shock due to dust water etc KE 4 ks 4 Room Air Conditioner Safety Precautions Ensure that an installation Do not disassemble or repair Do not install the product at a frame of the outdoor unit
32. TDOOR 4681A20121A 4681A20004S 46814200045 R 550140 ISOLATOR COMP 4 00982 4H00982E R 552111 TUBE ASSEMBLY CAPILLARY 5211A21121B 52114303310 5211420117 R 552116 TUBE ASSEMBLY REVERSING 5211A20188U 5211A20160E 5211A20140X R 552201 VALVE CHECK 5220AR7182A 5220AR7182A 5220AR7182A R 552202 VALVE REVERSING 5220AR3228D 5220AR3228B 5220AR3228D R 552203 1 VALVE SERVICE 2H02479P 2H02479H 2H02479H R 552203 2 VALVE SERVICE 5220A20001B 5220A20001B 5220A20006B R 554031 CONDENSER ASSEMBLY BENT 5403A20045M 5403A20019F 5403A20019V R 554160 COMPRESSOR SET 2520UGDP2CA 2520UGAP2GA 2520UGHP2AA R 559010 FAN ASSEMBLY PROPELLER 5900AR1266A 5901A10004A 5901A10004A R 561410 COIL ASSEMBLY REVERSING VALVE 6141A20017A 3A02028Y 6141AR3733R R 649950 CONTROL BOX ASSEMBLY OUTDOOR 4995A10032B 4995A20083B 4995A20083Y R WOCZZ CAPACITOR DRAWING 6120AR2194H 6120AR2194N 2H01451T R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 60 Room Air Conditioner Service Manual 61 62 Room Air Conditioner February 2004 P No 3828A20135S Printed in Korea
33. d disconnect other wires Remove securing screws Pull the control box out from the chassis carefully 4Way Fan Connector Comp Connectoi onne lt 55265 36 Air Conditioner Disassembly 3 To remove the Evaporator Remove 4 screws securing the evaporator Pull the evaporator out from the chassis carefully 220272220 M amp 7 N 2020 4 Before removing the Turbo Fan Remove the securing screws from the chassis De Air Guide Pull the pipe cover top cover and the air guide lt Pipe 5 remove the Motor Remove the securing bolt from the motor shaft Bracket Pull the fan out from the motor shaft 4 Remove 4 screws securing motor mount from the chassis and lift up the motor mount and the bracket Service Manual 37 rT o uo QNO ON939v13OA 1002 E NETT 9 H Duro E Er E diia m amo ae teas ta enn zHoops Me weg wm NI ____ PI Im lm HM iur PE Kan El
34. de operation the Jet Cool mode has the priority During the JET HEAT function at any moment the A C starts to blow the hot air with side louvers closed at extremely high speed for 60 minutes setting the room temp automatically to 30 C Auto Restarting Operation When the power is restored after a sudden power failure while in appliance operation the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory e Operation Mode that is kept on the memory State of Operation ON OFF 30 Hoom Air Conditioner Operation Operation Mode Setting Temp Selected Airflow Speed Sleep Timer Mode Remaining Time of Sleep Timer unit of hour Forced Operation Operation procedures when the remote control can t be used operation will be started if the power button is pressed f you want to stop operation re press the button 3 Heat pump Model Cooling Model Room Temp gt 24 C 21 C lt Room Temp lt 24 Room Temp lt 21 C Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor Fan Speed High High High High Setting Temperature 22 22 23 24 While in forced operation the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation Test operation e During the TEST OPERATION the unit operates in cooling mode at high sp
35. e outdoor pipe temperature rises over 12 C even if before 6 minutes B Fuzzy Operation C O Model According to the temperature set by Fuzzy rule when the intake air temp is 0 5 C or more below the setting temp the compressor is turned off When 0 5 C or more above the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C At the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time Service Manual 27 Operation 26 C lt Intake Air Temp gt 25 C 24 C lt Intake Air Temp lt 26 C gt Intake Air Temp 1 C 22 C lt Intake Air Temp lt 24 C gt Intake Air Temp 0 5 C 18 C lt Intake Air Temp lt 22 C gt Intake Air Temp Intake Air Temp lt 18 C gt 18 C When the Fuzzy key Temperature Control key is input after the initial setting temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan is automatically selected according to the temper ature B Fuzzy Operation H P Model When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off the operation mode is selected When determining the operation
36. eed fan regardless of room tem perature and resets in 18 1 minutes During test operation if remote controller signal is received the unit operates as remote controller sets If you want to use this operation open the front panel upward and Press the power button let it be pressed for about 3 seconds f you want to stop the operation re press the button Protection of the evaporator pipe from frosting f the indoor pipe temp is below 0 C 7 min after the compressor operates without any pause while in cooling cycle operation mode the compressor and the outdoor fan are turned off in order to protect the indoor evapo rator pipe from frosting When the indoor pipe temp is 7 C or higher after 3 min pause of the compressor the compressor and the out door fan is turned on according to the condition of the room temperature Buzzer Sounding Operation When the appliance operation key is input by the remote control the short beep beep sounds When the appliance pause key is input by the remote control the long sounds When a key is input by the remote control while the slide switch on the main unit of the appliance is on the forced operation position the error sound beep beep beep beep beep is made 10 times to indicate that the remote control signal cannot be received Service Manual 31 Operation Air Cleaner Operation When air cleaner function is selected during
37. erant leakege Clog of refrigeration cycle Defective compressor Excessive amount of refrigerant Normal Temperature difference between intake and discharge air depends on room air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower tem perature difference is larger 2 Check temperature and pressure of refrigeration cycle Suction pressure Compared with the normal value Temperature Compared with the normal valve Cause of Trouble Description Defective compressor Current is low SEN Defective 4 way reverse valve Higher Excessive amount of High pressure does not quickly Normal refrigerant rise at the beginning of operation Insufficient amount of Current is low Lower Higher refrigerant Leakage Clogging Current is low 1 The suction pressure is usually 4 5 6 0 kg cm G Cooling at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty 48 Room Air Conditioner Troubleshooting Guide Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power JI L After 10 seconds Turn on Main Power Does beeping sound is made from the Indoor Unit EL Check the voltage of power About AC 220V 60Hz Primarily the operating condition of Micom is
38. hat heat radiation from the condenser is not restricted Ensure that the space around the back and sides is more than 10cm The front of the unit should have more than 70 of space Do not place animals and plants in the path of the warm air Take the air conditioner weight into account and select a place where noise and vibration are mini mum Select a place so that the warm air and noise from the air conditioner do not disturb neighbors 12 Room Air Conditioner than 60 7 More than 10cm More than 10cm Capacity Pipe Size Standard Max Additional Length Elevation Length Refrigerant Btu h Gas LIQUID m B m Alm gm 7k 8k 9k 38 1 4 75 7 15 20 12k 18k 28k 1 2 1 4 75 7 15 20 7 Outdoor unit Indoor unit Indoor unit Outdoor unit JN Outdoor unit If the piping length is more than 5m A CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 5 7 meters Installation Preparing Work Open front panel 1 Push the front panel backward and lift it up to remove the two screws 2 As soon as you lift the both lower parts of panel front you can hear the sound from panel front At this moment panel front is separated 3 After pulling down this panel a bit separate connecting
39. he hose Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench This process is very important to prevent leakage from the system Replace the valve caps at both gas and liquid side service valves and fasten them tight This completes air purging with a vacuum pump The air conditioner is now ready to test run Service Manual 23 Installation Front Panel Ass 1 First Check the side cover assembly exactly and fix the power cord in the bottom groove of cover side left 2 Assemble connecting lead wire with controller fix the upper part of the front panel and match the lower part of the front panel 3 Screw up the front panel and suspend the hook of the front panel in the groove 24 Room Air Conditioner Panel Front Connector 1 Check that all tubing and wiring have been properly connected 2 Check that the gas and liquid side service valves are fully open Prepare remote controller 1 Remove the battery cover by pulling it according to the arrow direction 2 Insert new batteries making sure that the and of battery are installed correctly 3 Reattach the cover by pushing it back into position Use 2 AAA 1 5volt batteries Do not use rechargeable batteries e Remove the batteries from the remote control if
40. ing temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan is automatically selected according to the temperature 2 Fuzzy Operation for Dehumidification According to the setting temperature selected by Fuzzy rule when the intake air temp is 0 5 C or more below the setting temp the compressor is turned off When 0 5 C or more above the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C 28 Room Air Conditioner Operation At the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 26 C lt Intake Air Temp gt 25 C 24 C lt Intake Air Temp lt 26 C gt Intake Air Temp 1 C 22 C lt Intake Air Temp lt 24 C gt Intake Air Temp 0 5 C 18 C lt Intake Air Temp lt 22 C gt Intake Air Temp Intake Air Temp lt 18 C gt 18 C When the Fuzzy key Temperature Control key is input after the initial setting temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan repeats the
41. low airflow speed or pause as in dehu midification operation 3 Fuzzy Operation for Heating According to the setting temperature selected by Fuzzy rule when the intake air temp is 3 C or more above the setting temp the compressor is turned off When below the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp Compressor OFF Temp gt Setting Temp 3 C At the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 20 C lt Intake Air Temp gt Intake Air Temp 0 5 C Intake Air Temp lt 20 C gt 20 C When the Fuzzy key Temperature Control key is input after the initial setting temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the speed of the indoor fan is set to the high or the medium according to the intake air temperature and the setting temperature Airflow Speed Selection The airflow speed of the indoor fan is to high medium low or chaos by the input of the airflow speed selec tion key on the remote controller On Timer Operation When the set time is reached after the time is input by the remote controller the appliance starts to operate The timer LED is on when the on timer is input It is off when the time set b
42. oling Operation Us Auto Operation or Auto Changeover A UF Healthy Dehumidification Operation Heating Operation 3 e Cooling Modell 2 Heat Pump Model 10 1 mb 12 1 1 1 16 17 SLEEP AUTO BUTTON Used to set Sleep Mode Auto operation AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature NANO PLASMA OPTIONAL Used to start or stop the plasma purification function HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON OPTIONAL Used to set the desired horizontal airflow direction RESET BUTTON Used prior to resetting time or after replacing bat teries 2nd F Button Used prior to using modes printed in blue at the bottom of buttons AUTO CLEAN OPTIONAL Used to set Auto Clean mode Service Manual 35 Disassembly Disassembly WARNING Disconnect the unit from power supply before making any checks Be sure the power switch is set to OFF 1 To remove the Grille from the Chassis Pull the grille bottom the remove 2 securing screws Lift the both lower parts of panel front After pull down this panel a bit separate connecting wire with product Panel Front Connector 2 To remove the Control Box Before removing the control box be sure to disconnect the wires from PWB Pull the cover control out from the control box an
43. ontroller When operated in the Sleeping Mode the wind speed is set to the b Cause by the remote control Caused by other parts except the remote control When the mark d is displayed in LCD screen replace battery JL Check the connecting circuit between the remote controller MICOM No 89 R17 20 IR LED TR 16 2 2 50 Room Air Conditioner d Check the contact of CN D1 2 connector s Check Display PWB Assembly Voltage between CN D2 O DC 5V E Check point e Check the connecting circuit between PIN RO2L 1K CO1L 680PF MICOM PIN 43 Check Receiver Assembly Troubleshooting Guide Compressor Outdoor Fan are unable to drive Turn on Main Power d Operate Cooling Mode by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1 C at least d When in Air Circulation Mode Compressor Outdoor Fan is stopped d effected by the temperature of Heat Exchanger EVA Check the sensor for indoor temperature is attached as close as to be d When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged Compressor Outdoor Fan is stopped e Check RO2H 12 1k RO4H 6 2k Micom Pin 68 22 e Check the indoor temperature sensor is disconnected or
44. or Align the center of the pipings and sufficiently tighten the flare nut by hand Finally tighten the flare nut with torque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Outside diameter Torque mm inch kg m 06 35 1 4 1 8 09 52 3 8 4 2 012 7 1 2 5 5 215 88 5 8 6 6 219 05 3 4 6 6 18 Hoom Air Conditioner Outdoor unit Gas side piping O Bigger diameter diameter Torque wrench Installation Connect the cables to the indoor unit by connecting the wires to the terminals on the control board dividually according to the outdoor unit connection Ensure that the color of the wires of the outdoor unit and the terminal No are the same as those of the indoor unit Before connecting the cables to the terminal block remove the cables in the holder of the control cover and do it CAUTION The above circuit diagram is subject to change without notice The earth wire should be longer than the common wires When installing refer to the circuit diagram behind the panel front of the indoor unit Connect the wires firmly so that they may not be pulled out easily Connect the wires according to color codes referring to the wiring diagram CAUTION If a power plug is not Main power source used provide a circuit breaker
45. osed at this stage 2 Leak test Connect the manifold valve with pressure gauges and dry nitrogen gas cylinder to this service port with charge hoses CAUTION Be sure to use a manifold valve for air purging If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept close Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylin der valve when the gauge reading reached 150 P S I G Next test for leaks with liquid soap CAUTION To avoid nitrogen entering the refrigerant system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the system Usually the cylinder is used in a vertical standing position 22 Room Air Conditioner e Do a leak test of all joints of the tubing both indoor and outdoor and both gas and liquid side service valves Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth After the system is found to be free of leaks relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder When the system pressure is reduced to normal disconnect the hose from the cylinder Indoor unit Nitrogen gas cylinder in vertical standing position Installation Gas side of al Soap water method 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service port cap from
46. pe sealer C 1 1 4 1 J a 1 Connecting cable Trap is required to prevent water from entering into electrical parts 3 In cases where the Outdoor unit is installed above the Indoor unit perform the following Tape the piping and connecting cable from down to up Secure the taped piping along the exterior wall Form a trap to prevent water entering the room Fix the piping onto the wall by saddle or equiva lent Seal a small opening around the pipings with gum type sealer Service Manual 21 Installation F Cu Air and moisture remaining in the refrigerant system have undesirable effects as indicated below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrig eration system Therefore the refrigerant system must be leak test ed and evacuated to remove any noncondensables and moisture from the system 1 Preparation Check that each tube both liquid and gas side tubes between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed Remove the service valve caps from both the gas and the liquid side on the outdoor unit Note that both the liquid and the gas side service valves on the outdoor unit are kept cl
47. pe temperature is disconnected or not about 5KO at 25 C E Check the DC voltage on the PWB ASSEMBLY The details of check are as followings Comp Relay Outdoor fan Relay Check point Comp ON Comp OFF Check point Fan ON Fan OFF Between Micom Between Micom NO 63 and H V NO 53 and H PN Between IC02M Between IC03M NO 14 and GND Below DC 1V 5 NO 11 GND Below DC 1V About DC 12V 4 way Relay Check point 4 way ON 4 way OFF Between Micom NO 51 and GND SE SS ER Between IC03M Below About 12V No 9 and GND 54 Room Air Conditioner Troubleshooting Guide Turn off Main Power e Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor 4 way e Check the open or short of connecting wires between indoor and outdoor Service Manual 55 Exploded View Exploded View Indoor Unit 56 Room Air Conditioner Exploded View Outdoor Unit AS H076PB D M WL1
48. pper tube removal not possible to put them on after flaring work Flaring work 1 Firmly hold copper pipe in a die in the dimension shown in the table below 2 Carry out flaring work with the flaring tool Outside diameter A mm inch mm 06 35 1 4 0 0 5 09 52 3 8 0 0 5 012 7 1 2 0 0 5 015 88 5 8 0 1 0 019 05 3 4 1 0 1 3 Service Manual 15 Installation Check Smooth all round 1 Compare the flared work with the figure by X _ Inside is shiny without scratches 2 If a flared section is defective cut it off and do flaring work again Improper flaring Ld gieren fm Inclined Surface Cracked Uneven damaged thickness Even length all round Indoor Preparing the indoor unit s piping and drain hose for installation through the wall Route the indoor tubing and the drain hose in the direction of rear left or right Tm SUITE Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the upper side can cause drain pan to overflow inside the unit Gas side piping Connecting cable AQ Liquid side piping Drain hose _____ If the drain hose is routed inside the room insulate the hose with an insulation material so that dripping from sweating condensation will not damage furniture or floors
49. ration When the intake air temp reaches 3 Cabove the setting temp the compressor is turned off When below the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp Compressor OFF Temp gt Setting Temp 3 C e While in compressor on the indoor fan is off when the indoor pipe temp is below 26 C when above 28 C it operates with the low or setting airflow speed while in sleep mode with the medium airflow speed While in compressor off the indoor fan is off when the indoor pipe temp is below 33 C when above 35 C it operates with the low airflow speed H overloaded while in heating mode operation in order to prevent the compressor from OLP operation the out door fan is turned on off according to the indoor pipe temp e While in defrost control both of the indoor and outdoor fans are turned off B Defrost Control e While in heating mode operation in order to protect the evaporator pipe of outdoor unit from freezing reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit Defrost control is available 30 minutes later since heating mode operation started and it will not prolong over 6 minutes Deicing starts only when the outdoor pipe temperature falls below 6 C after 30 minutes passed from starting of heating operating and more than 10 minutes operation of compressor Deicing ends after 6 minutes passed from starting of deice operation or when th
50. reaking disturbance of the normal func tion of the overload 9 The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm in each active phase conductors 20 Room Air Conditioner Installation 1 Checking the drainage Pour a glass of water on the evaporator Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit 2 Drain piping The drain hose should point downward for easy drain flow Downward slope Do not make drain piping like the following Accumulated not raise drain water Air y k h Water Water s leakage leakage Tip of drain hose Less than dipped in water 50mm gap H D H 0 Water leakage H 1 the piping wrapping the connecting portion of the indoor unit with insulation materi al and secure it with two kinds of vinyl tapes f you want to connect an additional drain hose the end of the drain outlet should be routed above the ground Secure the drain hose appropriately 2 1 cases where the outdoor unit is installed below the indoor unit perform the following Tape the piping drain hose and connecting cable from down to up Secure the tapped piping along the exterior wall using saddle or equivalent Seal small openings around pipings with a gum ty
51. rge set to H the system has been charged with liquid purge the air Be careful of the liquid refriger refrigerant while operating the air conditioner ant The procedure is the same if using a gas turn off the air conditioner before disconnecting cylinder the hose 3 Open the valve Lo side on the charge set and 5 Mount the valve stem nuts and the service charge the system with liquid refrigerant port nut If the system can not be charged with the spec Use torque wrench to tighten the service port ified amount of refrigerant it can be charged nut to a torque of 1 8 kg m with a little at a time approximately 150g each Be sure to check for gas leakage time while operating the air conditioner in the cooling cycle however one time is not suffi cient wait approximately 1 minute and then repeat the procedure pumping down pin Service Manual 47 Troubleshooting Guide Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Temp Difference Operating Current Temp difference approx 0 C less than 80 of rated current Current Temp difference approx 8 C less than 80 of rated current Temp difference less than 8 C Current over the reated current Temp difference over 8 C All amount of refrigerant leaked out Check refrigeration cycle Refrig
52. sma Indicator On while in plasma mode off while plasma mode is canceled Auto restart Indicator On while auto restart mode off while auto restart mode is canceled Auto restart In case the power comes on again after a power failure Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions If your want to use this operation press the Auto Restart Button Power Forced Operation Operation starts when this button is pressed and stops when you press the button again 2 H P Model high quality LCD remote controller supplied Operation Indicator while in appliance operation off while in appliance pause Timer Indicator On while in timer mode on off and in sleep timer mode off when timer mode is completed or canceled Defrost Indicator Off except when hot start during heating mode operation or while in defrost control Plasma Indicator On while in plasma mode off while plasma mode is canceled Auto restart Indicator On while auto restart mode off while auto restart mode is canceled Auto restart In case the power comes on again after a power failure Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions If your want to use this operation press the Auto Restart Button Power Forced Operation Operation starts when this button is pressed and stops when you press the bu
53. ter clockwise clockwise push pin or with vacumm pump Operation Open Open Closed with valve cap with valve cap with cap Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Open Open Servicing with charging cylinder Gas charging Open Open _ Open Servicing with charging cylinder Pressure check Open Servicing Open Open with charging cylinder Gas releasing Open Servicing Open Open with charging cylinder Service Manual 43 Troubleshooting Guide Pumping Down Outdoor unit Purge the air e Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position Remove the valve stem caps and confirm that the valve stems are in the raised position Be sure to use a hexagonal wrench to operate the valve stems 2 Operate the unit for 10 to 15 minutes 3 Stop operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the 2 way valve to the closed position 44 Room Air Conditioner 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm g 7 Immediately set the
54. tton again Cooling Mode Operation When the intake air temperature reaches 0 5 C below the setting temp the compressor and the outdoor fan stop When it reaches 0 5 C above the setting temp they start to operate again Compressor ON Temp gt Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C While in compressor running operating with the airflow speed set by the remote controller While in compressor not running operating with the low airflow speed regardless of the setting 26 Room Air Conditioner Operation B Healthy Dehumidification Mode When the dehumidification operation input by the remote controller is received the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature 26 C lt Intake Air Temp gt 25 C 24 C lt Intake Air Temp lt 26 C gt Intake Air Temp 1 C 18 C lt Intake Air Temp lt 24 C gt Intake Air Temp 0 5 C Intake Air Temp lt 18 C gt 18 C e While in compressor off the indoor fan repeats low airflow speed and pause While the intake air temp is between compressor on temp and compressor off temp 10 min dehumidification operation and 4 min compressor off repeat Compressor ON Temp gt Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C In 10 min dehumidification operation the indoor fan operates with the low airflow speed Heating Mode Ope
55. ure once thermistor open short e Indoor Thermistor Indoor pipe temperature assembly check 34 Room Air Conditioner The controls will look like the following Controls P Signal transmitter 2 EED ON 2 28 01080 Operation 1 START STOP BUTTON D Operation starts when this button is pressed and Stops when the button is pressed again 2 OPERATION MODE SELECTION BUTTON Used to select the operation mode 3 ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature 4 INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low medium high and CHAOS 5 JET COOL HEATING OPTIONAL Used to start or stop the speed cooling Speed cooling heating operates at super high fan speed in cooling heating mode 6 CHAOS SWING BUTTON Used to stop or start louver movement and setthe desired up down airflow direction 7 ON OFF TIMER BUTTONS Used to the time of starting and stopping opera tion 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 gt 1 6 WIA ES 3 4 2 Om 0 7 5 ON D orF Os 11 Se Q 12 8 17 13 14 15 RESET aa 16 2 Operation Mode Co
56. w for ventila ner or a strong detergent tion before operating the unit appearance of the air conditioner may deteriorate Otherwise it may cause explosion and a fire change color or develop surface flaws Service Manual 7 Dimensions Dimensions This symbol alerts you to the risk of electric shock This symbol alerts you to hazards that may cause harm to the air conditioner This symbol indicates special notes Indoor Uni m Hanger Hole w D H Pipe Hole Model INDOOR UNIT Dimension mm 570 n SUR 568 D mm 137 8 Hoom Air Conditioner Dimensions Outdoor U Gas side 3 way valve Liquid side 2 way valve SE GE AS H076PB D M WL1 575 525 5 260 T Ges 301 E 73 S SES 392 L4 mm gt T ee 100 Service Manual 9 Dimensions Gas side 3 way valve
57. y the timer is reached f the appliance is operating at the time set by the timer the operation continues E Off Timer Operation When the set time is reached after the time is input by the remote controller the appliance stops operating The timer LED is on when the off timer is input It is off when the time set by the timer is reached H the appliance is on pause at the time set by the timer the pause continues Service Manual 29 Operation Off Timer lt gt On Timer Operation When the set time is reached after the on off time is input by the remote controller the on off timer operation is carried out according to the set time Sleep Timer Operation When the sleep time is reached after lt 1 2 3 4 5 6 7 0 cancel hr gt is input by the remote controller while in appliance operation the operation of the appliance stops While the appliance is on pause the sleep timer mode cannot be input e While in cooling mode operation 30 min later since the start of the sleep timer the setting temperature increases by 1 C After another 30 min elapse it increases by 1 C again When the sleep timer mode is input while in cooling cycle mode the airflow speed of the indoor fan is set to the low When the sleep timer mode is input while in heating cycle mode the airflow speed of the indoor fan is set to the medium Chaos Swing Mode By the Chaos Swing key input the vane automatically operates

LG AS-H076PB/D/M/WL1 User's Manual

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