Instruction/ maintenance manual of the product AS-H076PB/D/M/WL1 LG Electronics
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LG Room Air Conditioner SERVICE MANUAL LG CAUTION website http://www.lgservice.com • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
2 Room Air Conditioner Air Conditioner Ser vice Manual T ABLE OF CONTENTS LG Model Name ...............................................................................................................................................3 Safety Precautions .
Ser vice Manual 3 LG Model Name 12 - 3456789 1 0 Code T ype Code of Model Meaning 1 Producing Center , A~Z L: Chang-won R22 N: India Refrigerant A: Chang-won R410A Z: Brazil C: Chang-won R407C D: Indo.
4 Room Air Conditioner Safety Precautions T o pre v ent injury to the user or other people and proper ty damage, the f ollowing instructions must be f ollow ed. ■ Incorrect operation due to ignoring instruction will cause har m or damage. The seriousness is classified by the f ollowing indications.
Ser vice Manual 5 Saf ety Precautions ■ Operation Do not modify or extend the power cor d randoml y . T ake care so that the power cord ma y not be pulled during operation. Unplug the unit if strange sounds, smell, or smoke comes from it. • Otherwise, it may cause a fire or electrical shock.
6 Room Air Conditioner Saf ety Precautions Keep the flames a wa y . T ake the power plug out if neces- sary , holding the head of the plug and do not touch it with wet hands. Do not use the power cor d near the heating tools. • Otherwise, it may cause a fire.
Ser vice Manual 7 Saf ety Precautions ■ Installation Install the drain hose to ensure that drain can be securely done. Install the product so that the noise or hot wind from the outdoor unit may not cause any dama ge to the neighbors. Alwa ys inspect gas leakage after the installation and repair of product.
8 Room Air Conditioner Dimensions Dimensions Pipe Hole Fix Hole Hanger Hole H W D W mm 570 H mm 568 D mm 137 Model Dimension INDOOR UNIT Indoor Unit This symbol aler ts y ou to the risk of electric shoc k. This symbol aler ts y ou to hazar ds that ma y cause harm to the air conditioner .
Ser vice Manual 9 Outdoor Unit Dimensions W L2 L3 L1 D H L4 L5 Gas side (3-way valve) Liquid side (2-way valve) MODEL AS-H076PB/D/M/WL1 DIM unit W mm 575 H mm 525 D mm 260 L1 mm 301 L2 mm 73 L3 mm 392.
10 Room Air Conditioner W L2 L3 L1 D H L4 L5 Gas side (3-way valve) Liquid side (2-way valve) MODEL AS-H096PB/D/M/WL1, AS-H126PB/D/M/WL1 DIM unit W mm 770 H mm 540 D mm 245 L1 mm 285 L2 mm 64 L3 mm 51.
Ser vice Manual 11 Product Specifications Pr oduct Specifications T able-1 Model Name Item Unit Cooling Capacity Btu/h Heating Capacity Moisture Removal l /h Power Source Ø, V, Hz Cooling W Heating Running Cooling A Current Heating E.E.R. Cooling Btu/hW C.
12 Room Air Conditioner Installation 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.
Remove pipe co ver and side co ver 1. Remov e two scre ws(f or fixing pipe co ver) 2. Pull up the side cov er of desired connecting direction, and then side cov er is separated. 3. Pick the pipe hole of the side co v er . CA UTION: After removing the pipe hole, cut the burr f or safety .
14 Room Air Conditioner Installation Fixing the Indoor Unit • Drill the piping hole with a ø 50mm hole core drill. Drill the piping hole at either the r ight or the left with the hole slightly slanted to the outdoor side. Drill a Hole in the W all 5-7mm (0.
Ser vice Manual 15 Installation Flaring W ork Cutting the pipes and the cable. 1. Use the piping kit accessor y or the pipes purchased locally . 2. Measure the distance between the indoor and the out- door unit. 3. Cut the pipes a little longer than measured distance.
16 Room Air Conditioner Installation Check 1. Compare the flared work with the figure by . 2. If a flared section is def ectiv e, cut it off and do flaring work again. Indoor Preparing the indoor unit's piping and drain hose f or installation through the wall.
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 b y hand. 2. Tighten the flare nut with a wrench. 3. When e xtending the drain hose at the indoor unit, install the drain pipe .
18 Room Air Conditioner Installation Outdoor Align the center of the pipings and sufficiently tighten the flare nut b y hand. Finally , tighten the flare nut with torque wrench until the wrench clicks . • When tightening the flare nut with torque wrench, ensure the direction f or tightening f ollows the arro w on the wrench.
Ser vice Manual 19 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.
20 Room Air Conditioner Installation 1. Remove the control cover from the unit by loos- ening the screw. Connect the wires to the terminals on the control board individually. 2. Secure the cable onto the control board with the cord clamp. 3. Refix the control cover to the original position with the screw.
Ser vice Manual 21 Installation Chec king the Drainage Forming the Piping 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.
22 Room Air Conditioner Installation CA UTION: 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.
Ser vice Manual 23 Installation 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.
24 Room Air Conditioner Installation 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.
Ser vice Manual 25 T est Running 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.
26 Room Air Conditioner Operation DISPLA Y 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 or canceled.
Ser vice Manual 27 ■ 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.
28 Room Air Conditioner Operation 26 ° C ≤ Intake Air Temp => 25 ° C 24 ° C ≤ Intake Air Temp<26 ° C => Intake Air Temp+1 ° C 22 ° C ≤ Intake Air Temp<24 ° C => Intake Air Temp+0.
Ser vice Manual 29 • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26 ° C ≤ Intake Air Temp => 25 ° C 24 ° C ≤ Intake Air Temp<26 ° C => Intake Air Temp+1 ° C 22 ° C ≤ Intake Air Temp<24 ° C => Intake Air Temp+0.
30 Room Air Conditioner Operation ■ Off-Timer <=> 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.
Ser vice Manual 31 - 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. • The operation will be started if the power button is pressed.
32 Room Air Conditioner Operation ■ Air Cleaner Operation • When an air cleaner function is selected during 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.
Ser vice Manual 33 Operation Displa y Function 1. Heating Model 2. Cooling Model • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan • Sleep Mode • Sleep Mode • Timer Mode • Timer M.
34 Room Air Conditioner Operation Self-diagnosis Function 3sec 3sec 3sec (once) Error Code 1 Error Display LED (Indoor body operation LED) Error contents • Indoor room temperature thermistor open/short • Indoor pipe temperature thermistor open/short.
Ser vice Manual 35 Remote Contr ol Operations ON OFF CANCEL SET 1 3 5 4 9 10 12 14 16 7 2 8 13 15 11 6 Cooling Operation Auto Operation or Auto Changeover Healthy Dehumidification Operation Flip-up door (opened) Heating Operation Signal transmitter • Cooling Model( ), Heat Pump Model( ) 17 AUT O CLEAN The controls will look like the following.
36 Room Air Conditioner Disassembly Disassembl y Indoor Unit W ARNING: Disconnect the unit from power suppl y bef ore making any chec ks. Be sure the power s witch is set to "OFF" 1. To remove the Grille from the Chassis. - Pull the grille bottom, the remove 2 securing screws.
Ser vice Manual 37 Disassembly 3. To remove the Evaporator. - Remove 4 screws securing the evaporator. - Pull the evaporator out from the chassis carefully. 4. Before removing the Turbo Fan. - Remove the securing screws from the chassis. - Pull the pipe cover, top cover and the air guide.
38 Room Air Conditioner Schematic Diagram Schematic Dia gram INT S78DL05L,1W(DIP) FAN MOTOR 6 5 BL WH 6 5 7 7 YL IN DOOR 3 2 1 4 1 RD BK 4 2 3 1 2 1 2 R10D 4.7K 1% 5.1K R11D 25V R12D ZD02D 6.8V 10K C10D 100UF 1N4148 Q02G KRA101M PC-17K1 PC-17K1 IC07D 4.
Ser vice Manual 39 Wiring Diagram Schematic Diagram Indoor Unit Outdoor Unit AS-H076PB/D/M/WL1 AS-H096PB/D/M/WL1 AS-H126PB/D/M/WL1.
40 Room Air Conditioner Schematic Diagram Components Location MAIN P .W .B ASSEMBL Y (A C P ART) • HEA T PUMP MODEL CN-MOTOR2 R07D R01D PWB : 6870A90161D CN-O2 GND 3 4 T/BLOCK 1(L) 2(N) CN-COMP CN-OUT RY-FAN RY-4WAY CN-POW1 RY-O2 ZNR01N CN-COM FUSE RY-COMP 4 3 CN-POW2 R15D 250V-T3.
Ser vice Manual 41 Schematic Diagram DISPLA Y ASSEMBL Y – 6871A20462 T OP VIEW BO TT OM VIEW SUB P .W .B ASSEMBL Y 1 1 1 CN-12V(WH) 1 CN-D6 CN-D7 1 CN-D8 CN-D5 1 1 1 1 CN-CON(WH) CN-SW(BL) 1 C01V PW.
42 Room Air Conditioner T r oubleshooting Guide T roubleshooting Guide INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER).
Ser vice Manual 43 T roubleshooting Guide 2-wa y , 3-wa y V alve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Shaft position Shaft position Service port Closed Closed Closed (with valve cap) (with.
44 Room Air Conditioner T roubleshooting Guide • 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.
Ser vice Manual 45 T roubleshooting Guide Balance Refrigerant of the 3-way V alve (Gas leakage) • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the back seat. (2) Connect the charge set to the 3-way valve ’ s port. – Leave the valve on the charge set closed.
46 Room Air Conditioner T roubleshooting Guide Ev acuation (All amount of refrigerant leaked) • Procedure (1) Connect the vacuum pump to the center hose of charge set center hose (2) Evacuation for approximately one hour. – Confirm that the gauge needle has moved toward -76 cmHg (vacuum of 4 mmHg or less).
Ser vice Manual 47 T roubleshooting Guide Gas Charging (After Evacuation) • 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.
48 Room Air Conditioner T roubleshooting Guide T rouble anal ysis 1. Check temperature difference between intake and discharge air and operating current. Temp. Difference Temp. difference : approx. 0 ° C Current : less than 80% of rated current Temp.
Ser vice Manual 49 T roubleshooting Guide Electr onic P arts Pr oduct does not operate at all. (* Refer to Electr onic Contr ol Device dra wing and Schematic diagram.) Turn off Main Power Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK.
50 Room Air Conditioner T roubleshooting Guide The pr oduct does not operate with the remote controller . Turn on Main Power While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped.
Ser vice Manual 51 T roubleshooting Guide Compressor/Outdoor F an are unable to drive. Turn on Main Power 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.
52 Room Air Conditioner T roubleshooting Guide When Indoor F an does not operate . Fan can't operate for dehumidifying mode. - Change operation for cooling mode. Turn off Main power Check the connection of CN-MOTOR1, 2 Check the Fan Motor Check the Fuse(AC250V/3.
Ser vice Manual 53 T roubleshooting Guide When Louvers do not operate. • Confirm that the Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Louver with hands Normal • Check the connecting condition of CN-UD, LR1, LR2 Connector.
54 Room Air Conditioner T roubleshooting Guide When Heating does not operate Operate “ Heating Mode( ) ” by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2 ° C at least. In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28 ° C.
Ser vice Manual 55 T roubleshooting Guide Turn off Main Power • Check the electrical wiring diagram of outdoor side. • Check the abnormal condition for the component of Compressor/Outdoor Fan Motor, 4 way. • Check the "open" or "short" of connecting wires between indoor and outdoor.
56 Room Air Conditioner Exploded View Exploded Vie w 359012 264110 135515 267110 135500-3 349600 135500-2 135311-1 146811 147581 330870 135311-3 146811 346810 135500-1 146811 135311-2 131410 352380 35.
Ser vice Manual 57 Exploded View 554031 437212 435511 W0CZZ 552202 567502 552116 552201 554160 561410 552111 550140 552203-1 552203-2 430410 447910 649950 552102-2 552102-1 437210 435301 559010 546810.
58 Room Air Conditioner 554031 437212 435511 W0CZZ 552202 567502 552116 552201 554160 561410 552111 550140 552203-1 552203-2 430410 447910 649950 552102 437210 435301 559010 546810 Outdoor Unit (AS-H096PB/D/M/WL1, A-12 AH.
Ser vice Manual 59 Replacement P ar ts List Replacement P ar ts List Indoor Unit 131410 CHASSIS ASSEMBLY 3141A20004N 3141A20004D 3141A20004N R 135303 GRILLE,INLET 3530A20077F 3530A20077F 3530A20077F R.
60 Room Air Conditioner Outdoor Unit NOTE) * Please ensure GCSC since these parts may be changed depending upon the buyer's request. (GCSC WEBSITE http://biz.
Ser vice Manual 61 Memo.
62 Room Air Conditioner Memo.
P/No.: 3828A20135S February, 2004 Printed in Korea.
An important point after buying a device LG Electronics AS-H076PB/D/M/WL1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
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If you already are a holder of LG Electronics AS-H076PB/D/M/WL1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime LG Electronics AS-H076PB/D/M/WL1.
However, one of the most important roles played by the user manual is to help in solving problems with LG Electronics AS-H076PB/D/M/WL1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device LG Electronics AS-H076PB/D/M/WL1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
