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Room Air Conditioner

1. LOCATION DESCRIPTION AR REMARKS No AS W096ERH0 AS W096EBH0 AS W096EVH0 131410 CHASSIS ASSEMBLY 3141 20034 3141 20034 3141 20034 135311 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A10373A 3531A10373A 3531A10373A 135312 GRILLE ASSEMBLY FRONT INDOOR 3531A10374D 3531A10374F 3531A10374F 135516 COVER ASSEMBLY MOTOR 3551A20156B 3551A20156B 3551A20156B 146811 1 MOTOR DC 4681A20055A 4681A20055A 4681A20055A 146811 2 MOTOR DC 4681A20055B 4681A20055B 4681A20055B 152302 FILTER AIR 5230 20064 5230 20064 5230 20064 159830 FILTER ASSEMBLY AIR CLEANER 5983A20018G 5983A20018G 5983A20018G 159901 LOUVER HORIZONTAL 5990A20072A 5990A20072A 5990A20072A 249951 CASE ASSEMBLY CONTROL INDOOR 4995A20495V 4995A20495V 4995A20495V 263230 1 THERMISTOR ASSEMBLY 6323A20042A 6323A20042A 6323A20042A 263230 2 THERMISTOR ASSEMBLY 6323A30002F 6323A30002F 6323A30002F 264110 POWER CORD 6411A20013E 6411A20013E 6411A20013E 266090 HVPS DC DC 6609 100037 6609 100037 6609 100037 267110 REMOTE CONTROLLER ASSEMBLY 6711A20083X 6711A20083X 6711A20083X 263040 DISPLAY ELEMENT UNCLASSIFIED 6306A90009A 6306A90009A 6306A90009A 268714 PCB ASSEMBLY MAIN 6871A20914B 6871A20914B 6871A20914B 342800 BEARING 4280A20004B 4280A20004B 4280A20004B 346810 MOTOR UNCLASSIFIED 4681A20091J 4681A20091J 4681A20091J 35211B TUBE ASSEMBLY TUBING 5211A29044A 5211A29044A 5211A29044A 352150 HOSE ASSEMBLY DRA
2. LIT STL MAMAM Service Manual 71 Replacement Parts List Replacement Parts List Parts List Indoor LOCATION DESCRIPTION ATN REMARKS No AS W126ERH0 AS W126EBH0 AS W126EVH0 131410 CHASSIS ASSEMBLY 3141A20034C 3141 20034 3141 20034 135311 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A10373A 3531A10373A 3531A10373A 135312 GRILLE ASSEMBLY FRONT INDOOR 3531 103740 3531A10374F 3531A10374F 135516 COVER ASSEMBLY MOTOR 3551A20156B 3551A20156B 3551A20156B 146811 1 MOTOR DC 4681A20055A 4681A20055A 4681A20055A 146811 2 MOTOR DC 4681A20055B 4681A20055B 4681A20055B 152302 FILTER AIR 5230 20064 5230 20064 5230 20064 159830 FILTER ASSEMBLY AIR CLEANER 5983A20018G 5983A20018G 5983A20018G 159901 LOUVE
3. Circuit Grade 5bk 14k 18k 24k 28k 30k 32k 36k 38k A t5 20 3 30 40 A 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 21 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 breaking 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 separ
4. 68 Room Air Conditioner n Product Specifications Model Name Unit AS W096ERHO BHO VHO Product Specifications AS W126ERH0 BHO VHO Cooling Capacity MIN W 900 900 kcal h W 770 770 Btu h 3 070 3 070 Type W 2 630 3 510 kcal h W 2 260 3 020 Btu h 9 000 12 000 Max W 3 700 4 040 kcal h W 3 180 3 470 Btu h 12 620 13 800 Heating Capacity MIN W 900 900 kcal h W 770 770 Btu h 3 070 3 070 Type W 3 600 4 570 kcal h W 3 100 3 930 Btu h 12 300 15 600 Max W 5 000 5 480 kcal h W 4 300 4 710 Btu h 17 060 18 720 IN 20 C Out 10 C Heater ON Btu h IN 20 C Out 10 C Heater OFF Btu h Power Input Cooling 650 1 090 Heating 870 1 260 Heating 10 C Heater ON Heating 10 C Heater OFF Running Current Cooling 4 8 Heating 5 7 Heating 10 C Heater ON Heating 10 C Heater OFF Starting Current Cooling 4 8 Heating A 5 7 EER Cooling kc al hW 2 77 Bt u h W 11 01 Heating kc al hW 3 56 3 12 Bt u h W 14 14 12 38 COP Cooling WW 4 05 3 23 Heating WW 4 14 3 63 Power Supply 0 MHz 1 220
5. 6002 2005 2 2 ew p e 5 8 lt oe 6 Eur eS nc 8 00000 cup 888888 9 O L RD WCN NOISE2 BOTTOM VIEW Q HEATSINK mm E Service Manual 67 Schematic Diagram PWB ASSEMBLY SUB 6871A00087B lt 3016 LNAINOdWOO gt 6871A00088A CN 2 NO ZLINIT 38388 383 883 S NIdd31S NO Z8000V 1289 NSSV ASSM 6871A00088 RO1L 4 RECEIVER PWB 6870A90719A S CN RECEIVER TI lt COMPONENT SIDE gt 6871A20259D LCD MODULE 6306A90009A MS LOVL ON d 8LL006V0L89 ic WSY 8 white wire
6. Outdoor unit Outdoor unit Indoor unit amp Outdoor unit Oil trap N Indoor unit piping length is more than 5m C piping leng J case more than 5m Capacity is based on standard length and maxi mum allowance length is on the basis of reliability Oil trap should be installed every 5 7 meters Installation 7 Drill the piping hole with a 70mm hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side The wall you select should be strong and solid enough to prevent vibration 1 Mount the installation plate on the wall with four type A screws If mounting the unit on a concrete WALL wall use anchor bolts Indoor E Mount the installation plate horizontally by aligning the centerline using a level T 5 7mm 3 16 5 16 Open the Front Grille Pass Telephone Control Cord Wire through the hole which the power cord goes through Connect Telephone Control Cord Wire to the phone jack of telephone PCB of Control Box Fix Telephone Control Cord Wire inside Control box so as not to disconnect Chassis Hook 2 Measure the wall and mark the centerline It is also important to use caution concerning the Close the Front Grille location of the installation plate routing of the wiring to power outlets is through the walls typi cally Drilling the hole through t
7. This symbol alerts you to hazards that could cause harm to air conditioner This symbol indicates special notes NOTICE 9k 12k Btu Series 915 282 165 Model Dimension mm mm 10 Room Air Conditioner Dimensions Gas side 3 way valve Liquid side 2 way valve 9k 12k Btu Series nm 770 7 m 540 5 m 245 Em 285 T m 65 Y 518 14 T E 100 Service Manual 11 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 conveniently routed away Do not install near a doorway Ensure that the space around the left and right of the unit is more than A The unit should be installed as high on the wall as possible allowing a minimum of B from ceiling Use a stud finder to locate studs to prevent unnecessary damage to the wall More than lt TN D 10cm More than 2 3m 1 A CAUTION Install the indoor unit on the wall where the height from the floors more than 2 3 meters Clearance cm Grade A B 5K 2
8. DISPLAY 1 Operation Indicator ON while in appliance operation OFF while in appliance pause Flashing while in disconnection or short in Thermistor 3 sec off 0 5 sec on Timer Indicator ON while in timer mode on off OFF when timer mode is completed or canceled Comp Running Incidator While in appliance operation ON while in outdoor unit compressor running OFF while in compressor off 2 H P Model Operation Indicator ON while in appliance operation OFF while in appliance pause Flashing while in disconnection or short in Thermistor 3 sec off 0 5 sec on Timer Indicator ON while in timer mode on off OFF when timer mode is completed or canceled Defrost Indicator OFF except when hot start during heating mode operation or while in defrost control Sleep Indicator On during sleep reservation Off in case of cancel of sleep reservation If the indoor pipe temperaure is below 0 C in 7 min after the compressor operates without pause while in cooling cycle operation mode gt compressor outdoor fan are turned off When indoor pipe temp is 7 or higher after 2 min pause of compressor compressor outdoor fan is turned on according to the condition of the room temperature Indoor pipe Comp free temp 7C 28 Hoom Air Conditioner Operating frequency of compressor depend on the difference of
9. website http www lgservice com LG Gi Room Conditioner SERVICE MANUAL MODELS AS W096ERHO0 5 096 5 096 126 126 AS W126EVHO CAUTION e BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL Air Conditioner Service Manual TABLE OF CONTENTS LG Model E 3 Saf ty PT cautI nS 5 DIMENSI NS esc 10 Installati Wio 12 Flaring work and connection of 14 Connecting the cable between indoor unit and outdoor 19 Checking the drainage and forming the 2 2 21 PIT ee UNG sees case 22 24 reir p 25 RE RHENUS DoD cu HALLE COM HD UMEN 28 DI r 2 eec 39 Troubleshooting GUI eu ea 42 Schematic Diagram ooo uo ec Oe faba ele eee te esa 62 Product Specifications ood ue 67 Exploded View a Emo debeo tabe tien ib setas 68 Replacement Parts List 70 2 Room Air Conditioner
10. For right rear piping Route the indoor tubing and the drain hose in the direction of rear right Insert the connecting cable into the indoor unit from the out door unit through the piping hole Do not connect the cable to the indoor unit a small loop with the cable for easy connection later 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 Connecting cable NOTE 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 Foamed polyethylene or equivalent is recommended Indoor unit installation Hook the indoor unit onto the upper portion of the installa tion plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure that the hooks are properly seated on the installa tion plate by moving it left and right Connecting cable 1 Drain hose Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots click ing sound Flaring work and connection of piping Connecting the pipings to the indoor unit and drain hose to drain pipe Align the center of the pipes and sufficiently tighten the flare nut
11. 18 Hoom Air Conditioner 147 Align 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 2 912 7 1 2 5 5 015 88 5 8 6 6 019 05 3 4 6 6 Outdoor unit Gas side piping Bigger diameter diameter Torque wrench Connecting the cable between indoor unit and outdoor unit l Connecting the cable between indoor unit and outdoor unit Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually 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 A CAUTION above circuit diagram is subject to change without notice 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 A CAUTION Main power source If a power plug is not used provide a circuit breaker between power source and the un
12. 25 C 24 C lt intake air temp 26 intake air temp 1 18 lt intake air temp lt 24 intake air temp 0 5 intake air temp lt 18 18 When intake air temp reaches above the temp of setting 1 0 C condition of compressor same as cooling mode operation When intake air temperature reaches bolow the temp of setting 1 0 compressor operate step1 step3 and indoor fan speed repeatly operate low or stop Service Manual 29 Operating frequency of compressor depend on the difference of the temperature desired temp indoor temp Compressor off temp setting temp 3 0 C on temp setting temp If compressor operates at some operation frequency the operating frequency of compressor cannot be changed within 30 seconds Condition of compressor turned off When intake air temperature reaches 3 above the setting temperature Condition of indoor fan turned off While in compressor on indoor pipe temp 30 C While in defrost control between the indoor and outdoor fans are turned off Compressor 2minutes delay After compressor off the compressor can restart minimum 2 minutes later The operating freq step of comp Temp differences Comp Operating frequency 4 5 4 99 Step 1 4 0 4 49 Step 2 3 5 3 99 Step 3 3 0 3 49 Step 4 2 5 2 99 Step 5 2 0 2 49 Step 6
13. 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 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm g 7 Immediately set the 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 Service Manual 47 Troubleshooting Guide Re air Purging Re installation E Gas Outdoor unit Procedure 1 Confirm that both the liquid side valve and the gas side valve are set to the closed position 2 Connect the charge set and a gas cylinder to the service port of the Gas side valve Leave the valve on the gas cylinder closed 3 Air purging Open the valves on the gas cylinder and the charge set Purge the air by loosening the flare nut on the liquid side valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times
14. Operation indication Lamps LCD D Lights up in operation Lights up in Sleep Mode Lights up in Timer Mode Lights up in Preheat Mode for Heating Model Lights up in Plasma Air Clean Mode Lights up in during Energy Saving Cooling Mode Operation Service Manual 25 Functions Sleep Mode Auto Control The fan is switched to low Cooling low Heating speed The unit will be stopped after 1 2 3 4 5 6 7 hours Natural Air Control by CHAOS Logic The fan is switched to intermittent or irregular operation The fan speed is automatically switched from high to low speed Airflow Direction Control The louver can be set at the desired position or swing up and down automatically Auto Changeover Energy Saving Control Optional Horizontal airflow Direction Control Optional Auto Clean Optional The function will be operated while in any operation mode with selecting the function The function is to be stopped while it isoperating with selecting the function Defrost Deice Control Heating Both the indoor and outdoor fan stops during defrosting Hot start Control Heating The indoor fan stops until the evaporator pipe temperature will be reached at 34 C Heater Optional 26 Hoom Air Conditioner Functions Outdoor Unit Power Relay Control f power is on it will operate to chage capacitor on controller and power relay will operate after ab
15. 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 575V 50Hz 3Phase 5 200 220V 50Hz D 440 460 60Hz 3Phase 6 220 240V 50Hz E 265V 60Hz 7 110V 50 60Hz F 200V 50 60Hz 8 380 415V 50Hz 9 380 415V 60Hz CHASSIS Look Division 7 Chassis 2 of Chassis of Unit 54455 Ex LSP gt SP Chassis SQ L LG1 8 Look A Z Look SR G LG2 SEMI PANEL Color Artcool Model ST M OEM1 SE N OEM2 D Panel Type Deluxe P LG3 9 Function A Z Basic A Basic 4Way B Plasma Filter 4 D Tele LCD E Tele LCD Nano plasma 4Way F NBF F A changeove A clean Low G NBF _F A changeove A clean 4way Low A H Tele LED 4way Internet J Plasma F 4Way Oxy generator K NBF F A changeove A clean L NBF F A changeove A clean 4way M NBF F A changeove A clean PTC N NBF F A changeove Autoclean 4way PTC F A changeove A clean 4way Low A PTC Q Nano Plasma lON A Clean 5 4way Nano Plasma F Negative ION Healthy dehumidification A Clean T Nano Plasma F 4Way A changeove A clean Oxy generator U 4way Nano Plasma F Negative ION Healthy dehumidification A Clean Oxy generator V Dry contact Wire remocon 8 10 Serial No 0 9 LG Model Development Serial No ARTCOOL COLOR R Mirror B Blue Silver 4 Room Air Conditioner Dimensions ED Imensions This symbol alerts you to the risk of electric shock
16. the remote controller uu When mark 4 is displayed LCD Check the contact of CN DISP 1 2 connector screen replace battery Lt Check DISP P C B Ass y Voltage between CN DISP1 5V Check point Check the connecting circuit between MICOM CN DISP1 PIN Check receiver ass y 56 Room Air Conditioner Troubleshooting Guide Error code Description Cause of error Indoor TH sensor is short or open Indoor TH is short or Indoor TH sensor is not connected to the indoor pcb assembly open Damage or defect on the sensing circuit of indoorpcb assembly RO1H RO2H RO3H RO4H CO1H CO2H Check flow YES YES Indoor TH is connected to Indoor TH is right Sensing circuit of indoor Indoor pcb assembly pcb is right Check Indoor TH Connect to CN TH1 in Measure resistance of TH Check soldering state of indoor pcb assembly air about 10k at 25 RO1H RO4H CO1H 02 pipe about 5k Q 25 Description Cause of error Outdoor TH sensor is short or open Outdoor TH is short or Outdoor TH sensor is not connected to the outdoor pcb assembly open Damage or defect on the sensing circuit of outdoor pcb assembly C02H C03H Check flow YES YES Outdoor TH is connected to M Sensing circuit of outdoor outdoor pcb
17. 2 0 C Step 7 The targeting operating freq of comp each model Model Comp Operating frequency Step 1 Step2 Step3 Step4 5 Step6 Step7 5 096 EVHO 35 40 48 56 80 90 94 AS W126ERHO0 EVHO 35 40 48 56 80 90 94 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 super high speed for 30 min at cooling mode operation In the Jet Cool mode the room temperature is controlled to the setting temperature 18 C When the sleep timer mode input while the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the upper lower vane is reset to those of the initial cooling mode and then operated in order that the air outflow could reach further 30 Room Air Conditioner Jet heat While in cooling mode or Fuzzy operation the Jet Heat key cannot be input When it is input while in the Heating mode operation dehumidification the Jet Heat mode is operated In the Jet Heat mode the indoor fan is operated super high speed for 60 min at Heating mode operation In the Jet Heat mode the room temperature is controlled to the setting temperature 30 C When the sleep ti
18. After purging the air use a torque wrench to tighten the flare nut on liquid side valve 4 Check for gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the gas cylinder and dis charge the refrigerant until the gauge indicates 3 to 5 kg cm g 48 Room Air Conditioner 6 Disconnect the charge set and the gas cylin der and set the Liquid side and Gas side valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stem nuts and the service 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 CAUTION Do not leak the gas in the air during Air Purging Troubleshooting Guide Balance Refrigerant of the 3 way Valve Gas leakage Outdoor unit 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 c
19. Operating Freq Of Comp Comp off Inapplicable Operating Freq Of Comp Comp off Applicable Setting Freq 15 im The Degree of Superheat EEV Control Open step 4 Way Setting Speed Indoor FAN Setting Speed Indoor gt FAN Pre Heat LED Deice STEP 36 Room Air Conditioner Min 9 12 30 Main Deice time 25 i 30sec 10sec Step 5 _ 13 Min fion 12 Step 5 Option 13 x 300 Option 14 Min Option 12 off Setting Freq Step 3 Option _ 15 Starting Step Hi Speed Hot Setting i Speed i Super low speed low speed Function used to perform the Self Cleaning to prevent the Unit from Fungus and Bad Odors Used after the Shut Down of Cooling Operation to Clean the Evaporator and keep it as fresh for the Next operation During Self Cleaning the Outdoor Unit is Switched off The function is easy to be operated as It is accessed through the Remote Controller 1 Model ON OFF Cooling CYCLE Fan Heating Fan 13 Min 60 Sec 120 Sec oN OFF ON OFF Indoor Fan Setting Step Low Low Low Auto Changeover air conditioner changes the operation mode automatically to keep indoor tempera ture When room temperature vary over 2 C with respect to setting temperature air condition e
20. and discharge of air 3 Ensure the difference between the intake temperature and the discharge is more than 8 C 46 F Cooling or Heating Intake temperature gt 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 5 1 6 R 410A 35 95 8 5 9 5 120 135 5 1 9 24 Room Air Conditioner NOTE If the actual pressure is higher than shown the system is most likely over charged and charge should be removed If the actual pressure are lower than shown the system is most likely undercharged and charge should be added 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 Connect a low pressure gauge manifold hose to the charge port on the gas side service valve pry 2 Open the gas side service valve halfway and purge the air from the manifold hose using the refrigerant gas Close the liquid side service valve all the way in Turn the unit s operating sw
21. by hand lt Pipes n 2 Indoor unit tubing Tighten the flare nut with a wrench Flare nut Wrench Indoor unit tubing Outside diameter Torque mm inch kg m 06 35 1 4 1 8 09 52 3 8 4 2 912 7 1 2 5 5 015 88 5 8 6 6 219 05 3 4 6 6 When extending the drain hose at the indoor unit install the drain pipe Drain pipe Adhesive Vinyl tape narrow Wrap the insulation material around the con necting portion Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there is no gap Plastic bands Insulation material G a 1 Wrap the area which accommodates the rear piping hous ing section with vinyl tape Connection Indoor pipe unit pipe Vinyl tape Wrap with vinyl tape wide Connecting cable Vinyl tape narrow Service Manual 15 Flaring work and connection of piping Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where they fit into the rear piping housing section Wrap with vinyl tape Pipe Vinyl tape wide Drain hose For left rear piping Route the indoor tubing and the drain hose to the required piping hole position S Insert the piping drain hose and the connect ing cable into the piping hole Connecting cable Drain pipe Insert
22. 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 closed at this stage 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 5 1 9 with dry nitrogen gas and close the cylinder 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 Hoom Air Conditioner Do a leak test of all joints of the tubing both indoor and out door 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 gauge Charge hose Nitrogen gas cylinder in vertical standing pos
23. in order to avoid dropping burrs into the tubing Pipe SA Reamer Point down Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flare nut Copper tube Flaring work Firmly hold copper pipe in a die in the dimension shown in the table above Clamp handle Red arrow mark 14 Room Air Conditioner Carry out flaring work using flaring tool as shown below 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 Compare the flared work with figure below If flare is noted to be defective cut off the flared sec tion and re flare it Smooth all round Inside is shiny without scratches z E Improper flaring Inclined Surface Cracked Uneven damaged thickness Even length all round Preparing the indoor unit s piping and drain hose for instal lation through the wall Remove the plastic tubing retainer see illustration below and pull the tubing and drain hose away from chassis Replace the plastic tubing holder in the original position Optional A CAUTION When install make sure that the remaining parts must be removed clearly so as not to damage the pip ing and drain hose especially power cord and connecting cable
24. the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute Repeat this three times 5 Use torque wrench to tighten the service port nut to a torque of 1 8kg cm 46 Room Air Conditioner 6 Set the 3 way valve to the back seat 7 Mount the valve stem nuts to the 2 way and 3 way valves 8 Check for gas leakage At this time especially check for gas leakage from the 2 way and 3 way valve s stem nuts and from the service port nut CAUTION If gas leakage are discovered in step 3 above take the following mesures If the gas leaks stop when the piping connections are tightened further continue working from step 4 If the gas leaks do not stop when the connections are retightened repair the location of the leak dis charge all of the gas through the service port and then recharge with the specified amount of gas from a gas cylinder Pumping Down Troubleshooting Guide Outdoor unit Purge the air 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
25. the connecting cable into the indoor unit Don t connect the cable to the indoor unit Make a small loop with the cable for easy connection later Tape the drain hose and the connecting cable Connecting cable Hang the indoor unit from the hooks at the top of the instal lation plate Insert the spacer etc between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall Indoor unit Installation plate 8cm 16 Hoom Air Conditioner Connecting the pipings to the indoor unit and the drain hose to drain pipe Align the center of the pipes and sufficiently tighten the flare nut by hand 2225 0205 Flare nut Pipes Indoor unit tubing Tighten the flare nut with a wrench Indoor unit tubing Outside diameter Torque mm inch kg m 26 35 14 1 8 09 52 3 8 4 2 912 7 1 2 5 5 215 88 5 8 6 6 219 05 3 4 6 6 When extending the drain hose at the indoor unit install the drain pipe Drain hose Adhesive Vinyl tape narrow Wrap the insulation material around the con necting portion Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material Bind them together with vinyl tape so that there is no gap Plastic bands Insulation material LIC Flaring work and connection of piping Wrap the area which accommodates the rear piping hous Indoor u
26. the cylinder f you are using a gas cylinder also use a scale and reverse the cylinder so that the sys tem can be charged with liquid 4 Immediately disconnect the charge hose from 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 charge set to If 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 charge the system with liquid refrigerant If the system can not be charged with the spec ified amount of refrigerant it can be charged with a little at a time approximately 150g each 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 5 Mount the valve stem nuts and the service 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 Service Manual 51 Troubleshooting Guide Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Temp Diff
27. 1 050106 Assy 6871410135 o oo als 8 8 8 5 EA CN COIL2 ome Sor CN COILI RY HIPUMP RY AWAY DOC gt 3 7 y m Boo cos CIES Go ew gt E coss D ue 0012 CN TEST op di L 5 g Ro7Z gt e 5 a 8 ala e W o Ze T RT oooo E zzz Do2z Os C06D eic ap gt o Bez ES d MES mu 122 972 515 0032 5 5 RZ 8 com NF01J R09Z e Rz 4 9 5 ms x M Or oll EJ 5 2 8 B me o 6 2 i 9 o O 21 01 5 g oe coso HE E x dg 4 AAA 38 5 5 HIE B 58 2 i POWER MODULE TED 5 8
28. 240 50 1 220 240 50 Power Factor 97 97 Air Circulation Indoor Max 8 5 300 9 5 335 Outdoor Max 29 1 024 29 1 024 Moisture Removal iln pts h 0 6 1 28 1 3 2 77 Noise Level Sound Pressure 1m Indoor High 3 33 39 Med 29 29 Low 25 25 Outdoor Max 48 48 Refrigerant R410A Charge 1 000 34 0 1 000 34 0 Power Cord 16 3 1 0 16 3 1 0 Connecting Cable AWG P mm 16 4 1 0 16 4 1 0 Connecting Tube Socket Flare Liquid Side m m in 6 35 1 4 6 35 1 4 Gas Side m m in 9 52 3 8 9 52 3 8 Length std m in 7 5 295 7 5 295 Drain Hose 00 10 m m in 21 5 16 0 0 85 0 63 21 5 16 0 0 85 0 63 Dimension W H D Indoor mm 912 282 165 912 282 165 inch 35 2 11 1 6 5 35 2 11 1 6 5 Outdoor mm 770 540 245 770 540 245 inch 30 3 21 3 9 6 30 3 21 3 9 6 Net Weight Indoor kg lbs 10 5 23 1 10 5 23 1 Outdoor kg lbs 38 83 8 38 83 8 Service Manual 69 Exploded View lew Exploded V Indoor Unit 70 Room Air Conditioner Exploded View Outdoor Unit WO096ERHO BHO VHO UL Chassis AS Model AS W126ERHO0 BHO VHO
29. 43 Troubleshooting Guide Troubleshooting Guide 1 Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER gt z i P 22 3 WAY VALVE ACCUMU VALVE LATOR COMPRESSOR COOLING 42 HEATING 2 Cooling amp Heating Models INDOOR UNIT OUTDOOR UNIT m LIQUID SIDE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER i un A 4 REVERSING 3 WAY VALVE ACCUMU VALVE LATOR Css COMPRESSOR COOLING HEATING 44 Hoom 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 Servi 5 connection ervice ervice port cap 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 counter clockwise clockwise push pin or with vacumm pump Open Open Closed O t with valve with valve cap with cap Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Open Open Servicin
30. 8K 10 5 30K 38K 30 12 Outdoor unit If an awning is built over the unit to prevent direct sunlight or rain exposure make sure that 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 70cm 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 minimum Select a place so that the warm air and noise from the air conditioner do not disturb neighbors than 60cm a More than 10cm More than 10cm More than 70cm 12 Room Air Conditioner Rooftop Installations f the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting Capacity Pipe Size Standard Max Additional Length Elevation Length Refrigerant Btu h GAS LIQUID m B m 3 8 09 52 14 0635 40 75 7 15 20 129127 1410635 40175 7 15 20 129127 1406 35 40175 15 30 20 18k 28k 5 8 015 88 1496 35 4075 15 30 20 5801588 3 8 09 52 4or75 15 30 30 i 5 8 715 88 3 8 09 52 75 15 30 30 3 7 01905 3 8 29 52 75 15 30 50 Indoor unit
31. IN 5251A20011G 5251A20011G 5251A20011G 354210 EVAPORATOR ASSEMBLY FIRST 5421A20258B 5421A20258B 5421A20258B 359011 FAN ASSEMBLY CROSS FLOW 5901A20017H 5901A20017H 5901A20017H 733010 PLATE ASSEMBLY INSTALLATION 3301A20020A 3301A20020A 3301A20020A 668713 1 PCB ASSEMBLY SUB 6871A00087B 6871A00087B 6871A00087B 668713 2 PCB ASSEMBLY SUB 6871A00088A 6871A00088A 6871A00088A 668713 3 PCB ASSEMBLY SUB 6871A20259D 6871A20259D 6871A20259D NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com Service Manual 73 Replacement Parts List Parts List Outdoor LOCATON DESCRIPTION REMARKS No AS W126EUH0 AS WO096EURO 263230 3 THERMISTOR ASSEMBLY 6323A20001B 6323A20001B 263230 4 THERMISTOR ASSEMBLY 6323A20003G 6323A20003G 430410 BASE ASSEMBLY OUTDOOR 3041 20066 3041 20066 435301 GRILLE DISCHARGE 3530A20006G 3530A20006G 437210 PANEL ASSEMBLY FRONT OUTDOOR 3721A20027S 37214200275 437212 PANEL ASSEMBLY REAR OUTDOOR 3721A20026Z 3721 200267 447910 BARRIER OUTDOOR 4791A30002R 4791A30002R 546810 MOTOR UNCLASSIFIED 4681A20122A 4681A20122A 549610 BRACKET ASSEMBLY MOTOR OUTDOOR 4961A10015B 4961A10015B 550140 DAMPER COMPRESSOR 4H00982E 4H00982E 55211G TUBE ASSEMBLY EXPANSION 5211A22520A 5211A22520A 552116 TUBE ASSEMBLY REVER
32. ITCH PCB P No 3854A20427Z 64 Air Conditioner Outdoor Models AS W096ERHO BHO VHO 126 WIRING DIAGRAM LINN HOOQNI OL TERMINAL BLOCK BR o BK REVERSING VALVE REACTOR 000 OUTDOOR PIPETH TH BK RY 4WAY CN Q CN COIL1 CN COIL2 1 Schematic Diagram ra PSC Module CN TH1 CN D PIPE CN LEV 7 WCN NOISE1 Outdoor PWB ASSY CN U S CN V R CN W C 3854A20310N Service Manual 65 Schematic Diagram Indoor Unit Models AS W096ERHO BHO VHO AS W126ERH0 BHO VHO TOP VIEW PCB 68709907158 9 ASM 6871420914 PCB ASM 6871A20974 BOTTOM VIEW 66 Room Air Conditioner Schematic Diagram Outdoor Unit Models AS W096ERHO BHO VHO AS W126ERHO BHO VHO TOP VIEW 68704900550
33. K Model Between U V V W U W port Check Short Open circuit Short of SPMG pins GND P U V W pin Comp motor coil error 2 Direction of 0012 0037 087 107 127 167 normal 1 2 Q 3 Assembling state of RO1P R21P amp ICO1P Between U V W and Body 4 Assembling state of screw between INV IC 8 normal over10M Q Heat sink DC 15V output of Power module 18K Model Check Short of SPM2 pins GND P U V W pin 2 Direction of 0017 0037 C08Z 10Z 12Z 16Z 3 Assembling state of RO1P R21P amp ICO1P Assembling state of screw between INV IC amp Heat sink 5 DC 15V output of Power module 60 Room Air Conditioner Troubleshooting Guide Description Cause of error Supplied power is not normal Over current Error Indoor outdoor fan is locked CT2 Too much refrigerant Defect in current sensing circuit in outdoor pcb assembly Check flow YES YES Supplied voltage to Outdoor pcb is about AC 220 240V Does indoor outdoor fan work normally Refrigerant pressure is right Check indoor outdoor fan and Check refrigerant pressure BOWSESOUIOS adjust and adjust YES Current sensing circuit is right Check current sensing circuit check CT is damaged in outdoor pcb output wire is disconnected to pin or not BDO1N is inserted in right position refer marking on pcb and component Spec of 01 1kQ RO2N 1 65kQ is co
34. LG Model H LG Model Name 1 2 4 516 8 9 10 Type Code of Model Meaning 1 Producing Center A Z Refrigerant Product Type Cooling Heating Inverter 4 5 Capacity Electric Range gt L Chang won R22 A Chang won R410A C Chang won R407C Imc H X 2 China Turkey R22 Turkey R410A Thailand N India Z Brazil D Indonesia M Mexico V Vietnam S Out Sourcing Split Type Air Conditioner Cooling only Heat pump C O E Heater H P E Heater V Inverter C O N AC Inverter H P Q DC Inverter C O W DC Inverter H P Cooling Heating Capacity E x 09 115V 60Hz 220V 60Hz 208 230V 60Hz 200 220V 50Hz 220 240V 50Hz 110V 50 60Hz 9 000 Btu h A 220V 50Hz 3Phase B 208 230V 60Hz 3Phase C 575V 50Hz 3Phase D 440 460 60Hz 3Phase E 265V 60Hz F 200V 50 60Hz 380 415V 50Hz 380 415V 60Hz G N of Chassis of Unit Ex LSP gt SP Chassis Chassis Look Look Color Artcool Model Basic Basic 4Way Plasma Filter Plasma Filter 4 Way Tele LCD Tele LCD Nano plasma 4Way Nano Plasma F A changeove A c Nano Plasma F A changeove A c Tele LED 4way Internet Plasma F 4Way Oxy generator Nano Plasma F A changeove A c Nano Plasma F A changeove A clean 4way Nano Plasma F A changeove A clean P
35. O 85 95 If the temperature of the discharge pipe of compressor reaches over 130 C or below 30 C the compressor stop instantly t will be limited the compressor operating frequency according to the compressor dome TH Refer to below Fig Temperature range by COMP SPEC varies by 10 Pi off T2 2 D Pipe Temp Tis T2 2 AT No MODEL Ton T off T2 AT 1 AS W096ERHO BHO VHO 100 110 2 AS W126ERHO BHO VHO 100 110 13 C COMP Freq Service Manual 35 While heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit Defrosting control is available 40 minutes later since heating cycle started and the difference of the pipe tem perature of outdoor unit reaches above option 1 defrosting control is available without reference to heating operation time only if the pipe temperature of outdoor unit reaches below option 2 The mean outdoor temperature 10 C less than 10 5 C between 5 0 C between 0 more than Option 1 gt 4 gt 5 gt 5 The minimum Time of Heating sec Expected heating operating time d Heating operating t ime 40 minutes Option 2 Minimum Time Of Heating Setting Freq i 5seci 5sec
36. R HORIZONTAL 5990A20072A 5990A20072A 5990A20072A 249951 CASE ASSEMBLY CONTROL INDOOR 4995A20495U 4995A20495U 4995A20495U 263230 1 THERMISTOR ASSEMBLY 6323A20042A 6323A20042A 6323A20042A 263230 2 THERMISTOR ASSEMBLY 6323A30002F 6323A30002F 6323A30002F 264110 POWER CORD 6411A20013E 6411A20013E 6411A20013E 266090 HVPS DC DC 6609A10003Z 6609 100037 6609 100037 267110 REMOTE CONTROLLER ASSEMBLY 6711A20083X 6711A20083X 6711A20083X 263040 DISPLAY ELEMENT UNCLASSIFIED 6306A90009A 6306A90009A 6306A90009A 268714 PCB ASSEMBLY MAIN 6871A20914A 6871A20914A 6871A20914A 342800 BEARING 4280A20004B 4280A20004B 4280A20004B 346810 MOTOR UNCLASSIFIED 4681A20091J 4681A20091J 4681A20091J 35211B TUBE ASSEMBLY TUBING 5211A29044A 5211A29044A 5211A29044A 352150 HOSE ASSEMBLY DRAIN 5251A20011G 5251A20011G 5251A20011G 354210 EVAPORATOR ASSEMBLY FIRST 5421A20258B 5421A20258B 5421A20258B 359011 FAN ASSEMBLY CROSS FLOW 5901A20017H 5901A20017H 5901A20017H 733010 PLATE ASSEMBLY INSTALLATION 3301A20020A 3301A20020A 3301A20020A 668713 1 PCB ASSEMBLY SUB 6871A00087B 6871A00087B 6871A00087B 668713 2 PCB ASSEMBLY SUB 6871A00088A 6871A00088A 6871A00088A 668713 3 PCB ASSEMBLY SUB 6871A20259D 6871A20259D 6871A20259D NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE hittp biz LGservice com 72 Room Air Conditioner Parts List Indoor
37. SE 5211A24134A 5211A24134A 552200 VALVE EXPANSION BODY 5220A90001F 5220A90001F 552202 VALVE REVERSE 5220AR3228D 5220AR3228D 552203 1 VALVE SERVICE 5220A20005B 5220A20005B 552203 2 VALVE SERVICE 5220A20001Q 5220A20001Q 554031 CONDENSER ASSEMBLY BENDING 5403A20221B 5403A20221B 554160 COMPRESSOR 5416A90029C 5416A90029C 559010 FAN ASSEMBLY PROPELLER 5901A10033A 5901A10033A 561410 SOLENOID 6141A20010S 6141A20010S 561411 SOLENOID 6141A30003B 6141A30003B 649950 CASE ASSEMBLY CONTROL OUTDOOR 4995A20520P 4995A20520L 658740 TRANSFORMER LINEAR 5874 90003 5874 90003 668711 6871 10135 6871A10135L 435511 COVER ASSEMBLY CONTROL OUTDOOR 3551A30115G 3551A30115G NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE hittp biz LGservice com 74 Room Air Conditioner August 2006 P No 3828 20462 Printed Korea
38. TC Nano Plasma F A changeove Autoclean 4way PTC Nano Plasma F A changeove A clean 4way Low Negative ION A Clean Nano Plasma Negative ION A Clean 4way Nano Plasma F Negative ION Healthy dehumidification A Clean Nano Plasma F 4Way A changeove A clean LG Model Development Serial No ARTCOOL COLOR Mirror White Blue Wood Metal Cherry Function ean Low A ean 4way Low A ean 4 2565 lt Ommo oOo aS 10 Serial 0 9 Walnut Gogh Sisley Quran Mecca 2 gt 3 LG Model CN 1 2 34 5 6 7 9 10 Code Type Code of Model Meaning 1 Producing Center A Z Chang_won R22 N India Refrigerant Chang won R410A Z Brazil Chang_won R407C Indonesia T China Mexico Turkey R22 Vietnam 410 S Out sourcing H Thailand 2 Product Type A Z S Split Type Air Conditioner 3 Cooling Heating Inverter 2 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 gt
39. ase 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 49 Troubleshooting Guide Evacuation All amount of refrigerant leaked Liquid side Outdoor unit Procedure 1 Connect the vacuum pump to the center hose 3 Close the valve Lo side on the charge set of charge set center hose turn off the vacuum pump and confirm that the gauge needle does not move approxima 2 Evacuation for approximately one hour tely 5 minutes after turning off the vacuum Confirm that the gauge needle has moved pump toward 76 cmHg vacuum of 4 mmHg or less 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed 50 Hoom Air Conditioner Troubleshooting Guide Gas Charging After Evacuation Outdoor unit Check valve Charging cylinder Procedure 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 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
40. assembly pcb is right Check outdoor TH Connect to CN TH1 in Measure resistance of TH Check soldering state of outdoor pcb assembly air about 10k Q at 25 C RO3H RO6H C02H CO3H pipe about 5k Q at 25 C Service Manual 57 Troubleshooting Guide 9K 12K Description Cause of error Heat sink is damaged short or open Heat sink Temp is over 95 C Heat sink Temp is over 95 C Heat sink TH is open or short Damage or defect on the sensing circuit of outdoor pcb assembly RO1H RO2H C01H Check flow YES YES Heat sink TH is connected to Heat sink TH in INV IC is Sensing circuit of outdoor outdoor PCB assembly Right pcb is right Check heat sink TH Check soldering state of Measure resistance of TH RO1H RO2H CO1H about 10k Q at 25 C Connect to CN TH2 in outdoor PCB assembly 58 Room Air Conditioner Troubleshooting Guide Description Cause of error Check flow Wiring connection Is right Indoor Outdoor 1 BR 1 BR 2 BL 2 BL 3 GN YL 3 GN YL 4 RD 4 RD YES YES Wrong or missing wiring between indoor and outdoor unit cable Defect of communication components in indoor pcb assembly Defect of communication components in outdoor pcb assembl Communication Error Defect of power supply components in outdoor pcb assembly ground connection in air conditioner unit affected
41. ation of at least 3mm in each active phase conductors 20 Hoom Air Conditioner Checking drainage and forming the pipings l Checking the drainage and forming the pipings To remove the front panel from the indoor unit Set the air direction louvers up and down to the position horizontally by hand Remove the securing screws that retain the front panel Pull the lower left and right sides of the grille toward you and lift it off Pull the right and the left side To check 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 a NSN g Drain piping drain hose should point downward for easy drain flow Downward slope Do not make drain piping drain water Air Y 8 h AT uu Water ea 4 Water 5 leakage leakage leakage Tip of drain hose dipped in water G Ditch Form the piping by wrapping the connecting portion of the indoor unit with insulation mate rial and secure it with two kinds of vinyl tapes If 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 In cases where the outdoor unit is installed below the indoor unit perform the following Tape the piping drain hose and connecting cable from do
42. by noise in power source YES Is the voltage of T Block Is th f GND amp DC5V Dio in outdoor about s the voltage of GND amp DC5V in AC 220 240V Outdoor pcb about DC 5V Check power connector Check FUSE NF01 02J PTC Is not connected to the Power Module BD 01S in T Block in indoor unit Outdoor pcb assembly YES Communication circuit of indoor Ground connection is installed amp outdoor pcb Is right power outlet or outdoor chassis Check IC01K IC02K D01K D03K 2001 2003 RO1K R10K C01K C04K Earth port Install ground connection from outdoor unit In case power outlet has no earth port Service Manual 59 Troubleshooting Guide Description Cause of error Supplied power is not normal Comp Connector CN U V W is disconnected or inserted to wrong position Compressor is damaged coil short gt replace compressor Too much Refrigerant Defect in outdoor pcb assembly replace pcb assembly DC Peak Error Check flow YES YES Supplied voltage to Is connector CN U V W Outdoor pcb is about connected to compressor and Refrigerant pressure is right AC 220 240V inserted to pcb in right position Check CN U V W connector U RD V BL W YL Check refrigerant pressure Check power source and adjust YES YES Inverter components in outdoor pcb assembly are ight 15 the compressor right 3 right Check resistance 9 K 12
43. cator canceled when cause of error recovered 2 Error Code 5 8 9 Keep displaying Error indicator by restarting air conditioner although cause of error recovered 3 Error Code 6 7 Error indicator canceled when power reset Power Cord Off amp On Precaution in Service or Check Even after stopping the operation of product it takes some time to discharge the remaining electricity of the electrolytic capacitor that was charged Before starting a checking or repairing job pull out the plug out of the outlet and make sure that the lamp on the control board outdoor unit is off The Diagnosis Procedure Check the supplied voltage to product AC 220V 230V 30V ic Check the connecting cable between Indoor and Outdoor d Check the blinking number of operation indicator refer to the self diagnosis function ub Check the self diagnosis table IL Indoor Outdoor JI L Check the condition of connectors Check the condition of connectors The condition of P C B pattern The condition of P C B pattern The electronic components 54 Hoom Air Conditioner Refer to electronic contorol device drawing 8 schematic diagram Trouble 1 The Product doesn t operate at all Troubleshooting Guide Turn off the main power and wait to 10 seconds LS Turn on the main power again JS Does Beeping sound is made from the indoor
44. charge louver to open position horizontally by finger pressure Remove the securing screws To remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 1 Before removing the control box be sure to take out the wire screwed at the other end Service Manual 41 Disassembly 2 To remove the Control Box Remove securing screws Pull the control box out from the chassis carefully 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA in the Eva Holder at the right 1EA CAUTION When repair do not damage the Caution label 42 Hoom Air Conditioner Disassembly Unhook the tab on the right inside of the chassis at the same time slightly pull the evaporator toward you until the tab is clear of the slot 5 To remove the Motor Cover Remove 2 securing screw Pull the motor cover out from the chassis carefully 6 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bearing Service Manual
45. erence Operating Current NOTICE Temp difference Current approx 0 C less than 80 of rated current Temp difference Current approx 8 C less than 80 of rated current Temp difference Current less than 8 C over the reated current Temp difference over 8 C All amount of refrigerant leaked out Check refrigeration cycle Refrigerant 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 Hi Defective compressor Current is low igh 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 NOTICE 1 The suction pressure is usually 8 5 9 5kg cm G Cooling at normal condition 2 The temperature can be measured by attaching the thermometer to the low pres
46. ervice port slightly to release the pressure then remove the 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 Air purging 3 way valve Close 2 way valve Open Hexagonal wrench Gas side Cap Vacuum Service Manual 23 Test running Test Running 1 Check that all tubing and wiring have been properly con nected 2 Check that the gas and liquid side service valves are fully open Settlement of outdoor unit Anchor the outdoor unit with a bolt and nut 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 conveyed to the hose secure the unit with an anti vibration bushing 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
47. g 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 45 Troubleshooting Guide Air purging Required tools hexagonal wrench adjustable wrench torque wrenches wrench to hold the joints and gas leak detector The additional gas for air purging has been charged in the outdoor unit However if the flare connections have not be done correctly and there gas leaks a gas cylinder and the charge set will be needed The air in the indoor unit and in the piping must be purged If air remains in the refrigeration pipes it will affect the compressor reduce to cooling capacity and could lead to a malfunction Outdoor unit Service port nut Be sure using a torque wrench to tighten the service port nut after using the service port so that it prevents the gas leakage from the refrigeration cycle A CAUTION Do not leak the gas in the air during Air purging Procedure 1 Recheck the piping connections 2 Open the valve stem of the 2 way valve coun terclockwise approximately 90 wait 10 sec onds and then set it to closed position Be sure to use a hexagonal wrench to operate the valve stem 3 Check for gas leakage Check the flare connections for gas leakage 4 Purge
48. he appliance stops When the appliance is on pause the sleep timer mode cannot be input 1 Sleep timer operation for cooling cycle While in cooling mode operation 30 min later since the start of the sleep timer the setting temperature increase by 1 C After another 30min elapse it increases by 1 again Setting temp Cooling ON temp Setting temp 0 5 Cooling OFF temp Setting temp 0 5 E gt 0 5 1 Sleep time hr 2 Sleep timer operation for heating cycle e While in heating mode operation 60 min later since the start of the sleep timer the setting temperature decrease by 1 C After another 60min elapse it decreases by 1 C again Setting temp C Heating ON temp Setting temp Heating OFF temp Setting temp 3 0 C gt 1 2 Sleep time hr 32 Room Air Conditioner When power is restarted 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 Operation mode that is kept on the memory State of operation ON OFF Operation mode setting temp selected airflow speed Sleep timer mode remaining time of sleep timer Chaos Swing Forced operation operate the appliance by force in case that the remote control is lost the forced operation selection switch is on the main unit of the app
49. he wall for pip E ing connections must be done safely ue Remove the rubber stopple in the desired drain direc tion Insert drain hose into the handle of drain pan and join rd Installation plate k m drain hose and connecting hose according to the figure D i B by 70mm A 70mm Left rear piping Right rear piping CHASSIS Distance mm Grade A B C D 7 7k 9k 12k 14k 75 65 105 65 18k 24k 105 65 260 65 Adhesive L 7 Connecting part Drain hose Only the desired direction Service Manual 13 Flaring work and connection of piping Flaring work and connection of piping Flaring work Main cause for refrigerant leakage is due to defect in the flaring work Carry out correct flaring work using the follow ing procedure Cut the pipes and the cable Use the piping kit accessory or pipes purchased locally Measure the distance between the indoor and the outdoor unit Cut the pipes a little longer than the measured distance Cut the cable 1 5m longer than the pipe length O Copper pipe 90 Slanted Uneven Rough 3 E E Ej C Burr removal Completely remove all burrs from the cut cross section of pipe tube Putthe end of the copper tube pipe in a downward direc tion as you remove burrs
50. hooting Guide Cause of error D pipe TH is short or open D pipe TH is not connected to the outdoor pcb assembly open Damage or defect on the sensing circuit of outdoor pcb assembly Check flow YES D_PIPE TH is connected to is right Outdoor pcb assembly D_PIPE TH is right 4 Connect to CN D_ PIPE Shed Dep hm in outdoor pcb assembly about 200kQ at 25 C Measure resistance of TH YES Sensing circuit of outdoor pcb is right Check soldering state of RO7H RO8H C04H Service Manual 63 Schematic Diagram Schematic Diagram Indoor Unit Models AS W096ERHO BHO VHO AS W126ERH0 BHO VHO ASM CN MOTOR1 e CN N2 N AC250V 3 15A RY PWR TERMINAL CN COM BLOCK CN SUB 10PIN RD CN UR CN DISP1 CN TH1 CN TH2 CN TH3 STEP MO CN STEP MOTOR THERMISTOR CN THI 2 CN THI 1 GN YL RD TO OUTDOOR UNIT CN LIMIT2 CN FORCE CN RECEIVER 5 5 LIMIT FORCE RECEIVER SWITCH SW
51. it as shown by Air Circuit Breaker Conditioner Use a circuit T breaker or time delay fuse A CAUTION The power cord connected to the A unit should be selected according to the following specifications Type B approved by HAR or SAA Grade NORMAL CROSS SecTIONAL AREA EN 2 0 75 1 0 1 5 25 Unit A Indoor Indoor Indoor Indoor Cable HOSVV F HOSVV F 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 7k 9k 14k 18k 24k 0 75 1 0 15 25 Cable HO7RN F HO7RN F HO7RN F HO7RN F NORMAL CROSS SECTIONAL AREA Service Manual 19 Connecting the cable between indoor unit and outdoor unit Outdoor Unit Remove the control cover from the unit by loosening the screw Connect the wires to the terminals on the con trol board individually Terminal block Connecting cable Secure the cable onto the control board with the cord clamp Connecting cable Refix the control cover to the original position with the screw Use a recognized circuit breaker A between the power source and the unit A disconnecting device to adequately discon nect all supply lines must be fitted
52. itch 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 Power Failure Compensation Function User Selection ON OFF 1 Operation Sequence 4 Press the forced switch until BUZZER sounds 2 times beep beep Release the forced switch if BUZZER sounds Check the function selection ON OFF with the operation LED 2 Checking function selection ON OFF Function Selection ON One time blinking of operation LED would repeat 4 times Function Selection OFF Two times blinking of operation LED would repeat 4 times Functions B Functions Cooling Mode Operation Healty dehumidification Mode Operation Heating Mode Operation Jet Cool Mode Operation Jet Heat Mode Operation Energy Saving Cooling Mode Operation Operation ON OFF by Remote controller Sensing the Room Temperature Room temperature sensor Thermistor Pipe temperature sensor Thermistor Room temperature control Maintain the room temperature in accordance with the Setting Temp Starting the Current Control Indoor fan is delayed for 5 sec at the starting Time Delay Safety Control Restarting is for approx 2 minutes Indoor Fan Speed Control Super High High Med Low
53. ition Soap water method 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service port cap from the 3 way valve 3 To open the 2 way valve turn the valve stem counter clockwise approximately 90 wait for about 2 3 sec and Close it 4 Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping 5 If bubbles come out the pipes have leakage Evacuation Connect the charge hose end described in the preceding 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 tubing 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 33 ft if tubing length is longer than 10m 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 vacuum pump Finishing the job With a service valve wrench turn the valve stem of liquid Side valve counter clockwise to fully open the valve Turn the valve stem of gas side valve counter clockwise to fully open the valve Loosen the charge hose connected to the gas side s
54. liance to operate the appliance in the standard conditions operation condition is set according to the outdoor temp and intake air temperature as follows i f Indoor temp Operating Mode Setting temp d s 24 Cooling 22 C 21 24 Healthy Dehumidification 23 C High speed below 21 C Heating 24 C The unit select before operating mode in hours Test Operation Press the Tact Switch for compulsory operation of the main body for 3 seconds in order to operate in the trial operation mode Operation mode Cooling Indoor pan High speed COMP frequency Step 5 COMP compulsorily operates for about 18 minutes irrespective of indoor temperature Service Manual 33 1 control If the operating current reaches 11 the operating frequency of the compressor decrease After decreasing the operating frequency by 1step if operating current is below 1 for 60 seconds continuous ly the operating frequency of compressor increase by 1step CT2 control f the operating current of the appliance reaches 12 the compressor stop instantly and 2 minutes later the compressor restart again If CT2 occurs 5 times within 1hour the appliance turn off and display ERROR CODE 7 Control table 11 Current of operating frequency down 12 Current of compressor cut off 11 Outdoor temp gt 38 Outdo
55. mer mode input while the Jet Heat mode operation the Jet Heat mode has the priority When the Jet Heat key is input the upper lower vane is reset to those of the initial Jet heating mode and then operated in order that the air outflow could reach under flow Toggle operation is carried out if pressing the Chaos key of the remote control during operation of product Move the vane up or down in interval of 16 C from the initial vane position Vane speed is different every sector but speed and movement of the vane depends on following graph Cooling Operation Basic Patten 1 Up Down vane degree 1 Vane operation on short change of flow vane operation on middle change of flow 16 deg 48 deg Initial position 16 deg 32 deg Heating Operation Basic Patten 1 Up Down Vane degree Vane operation on short change of flow Vane operation on middle change of flow 16 deg 48 deg Initial position 16 deg 32 deg 6ms 12ns 6ms ims 1 cycle lt Basic pattern 1 Basic pattern 2 Basic pattern 3 Basic pattern 4 Basic pattern 5 Basic pattern 6 Basic pattern 7 Basic pattern 8 Basic pattern 9 Basic pattern 10 Basic pattern 11 Basic pattern 12 P pee 1 1 1 1 1 1 Service Manual 31 When the sleep time is reached after 1 2 3 4 5 6 7hr is input by the remote control during the operation the operation of t
56. n if meeting one or more of conditions where outdoor temperature is more than 5 C where diacharge temperature of the compressor is more than 25 C amp where the compressor turns on COMP Discharge Temerat Preheat Off Preheat On Selection of 1 The buzzer sounds 3 times if pressing the tact switch for 10seconds If turning off the tack switch in this case the operation LED flickers and existing additional heat Logic is toggled 2 Display of operation LED in selection of heat option When selecting additional heat Logic Flickering numbers of LED 1 time When selecting existing heat Logic Flickering numbers of LED 2 times 3 Setting is selectable regardless of operation status on off 38 Room Air Conditioner 10 Tact S W i OFF S EN Buzzer sound Operation LED MENS De ET 2 0 25 T Flickering 4 times 1time 1 5sec 0 25 3sec When selecting existing heat Logic E e a When selecting additional heat Logic Function of operation off for preventing overload when the indoor fan stops in the operating condition of the outdoor unit Contents of operation When feedback rpm of the BLDC fan motor is successively less than 50 for 12 seconds in the operation condition of the indoor fan it is considered as lock of the indoor fan If detected as lock of the indoor fan immediately turn off the compres
57. n super high speed in Cooling and heating rae CHAOS SWING BUTTON Used to stop or start louver movement and the C desired up down airflow direction i ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation TIME SETTING BUTTONS Used to adjust the time TIMER SET CANCEL BUTTON Used to set and to cancel the timer operation SLEEP MODE AUTO BUTTON Used to set sleep mode auto operation AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating ENERGY SAVING COOLING MODE BUTTON OPTIONAL For inverter type models ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature PLASMA BUTTON 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 2nd F BUTTON Used prior to using modes printed in blue at the bottom of but tons AUTO CLEAN BUTTON OPTIONAL Used to set auto clean mode In some models this button has a 2nd function of LED luminosi ty control LED LUMINOSITY OPTIONAL Used to adjust LCD luminosity Disassembly Disassembly Indoor Ur t A WARNING Disconnect the unit from power supply before mak ing any checks Be sure the power switch is set to OFF Up and down air direction louver To remove the Grille from the Chassis Set the up and down air dis
58. nit installation ing section with vinyl tape Remove the spacer piping Ensure that the hooks are properly seated on the installa tion plate by moving it left and right wide Pipe Connecting cable t Drain hose Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots clicking sound Vinyl tape narrow Connecting cable Bundle the piping and drain hose together by wrapping them with cloth tape over the range within which they fit into the rear piping housing section Pipe A CAUTION Vinyl tape narrow Installation Information For left piping Good case For left piping Follow the instruction below Drain hose Wrap with Press on the upper side of clamp vinyl tape wide Unfold the tubing to downward slowly 8 Reroute the pipings and the drain hose across the back of the chassis Piping for passage through piping hole Set the pipings and the drain hose to the back of the chassis with the tubing holder Hook the edge of tubing holder to tap on chassis and push the bottom of tubing holder to be engaged at the bottom of chassis Bend the tubing to the left side of chassis Tubing holder Service Manual 17 Flaring work and connection of piping A CAUTION Bad case Following bending type from right to left could cause problem of pipe damage
59. or temp lt 38 C 12 Cooling Heating Cooling Heating 1 AS W096ERHO BHO VHO 7 0 8 5 7 5 9 0 10 0 2 AS W126ERH0 BH0 VH0 7 0 8 5 7 5 9 0 10 0 cf 11 is set the lowest level between intial value and in case dectection of dc paeak current Peak Current Error a fault signal of IPM If the operating current of IPM reaches 35A 3A the compressor stop instantly If DC PEAK occurs 5 times within 1 hour the appliance turns off and display ERROR CODE 6 Peak Current Error by the compressor lock If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating the appliance turns off and display ERROR CODE 6 Peak Current Error by the Outdoor Fan Lock If it s 5 times within 1 hour in case of the temperature of outdoor pipe TH is over 65 C while the compressor is operating the appliance turns off and display ERROR CODE 6 34 Hoom Air Conditioner If the temperature of the heat sink TH reaches over the Compressor stop instantly It will be limited the compressor operating frequency according to the heat sink TH refer to below FIG It will be blink 4 times when the thermistor is open or short also the temperature is over Toff AT T off T on Heat Sink Temp T4 Ton AT MODEL Ton T off T2 Ton 2 AT 1 AS W096ERHO BHO VHO 85 95 2 AS W126ERHO BHO VH
60. out 2 5sec Active Power Filter Control PSC active power filter is designed to correct power factor cos and to regulate DC link voltage It will be operated PFC circuit when the compressor freq is over 30Hz and wattage is over 450 watt Comp Freq Control final operating freq of comp is set the lowest freq that limited outdoor temp discharge pipe temp heat sink temp target freq owing to CT Overheating Protection Power Module When the temp of power module increases to 85 C controller decreases Freq of Comp Freq Speed Control Up Down Speed It will be changed the drive freq of comp according to temp of indoor and outdoor Total Current Control Over Current Protection DC Peak Current Control 4 way Valve Control is only operated in the heating operation mode except defrosting operation Outdoor Fan Motor Control I 5 o Although fan motor speed is middle it will change high speed in case of below AC193V over 45 of outdoor temp and over fc fh of comp Freq Middle speed Nomal mode Low speed Although fan motor speed is middle it will change Low speed in case of over AC 270V over 21 C Heating Mode of outdoor temp below 24 C Cooling Mode of outdoor temp Discharge Pipe Temp Control Low Ambient Comp Torque Control Over Heating Protection Comp Service Manual 27 l Operation
61. r keeps the room temperature in 2 C with respect to setting temperature by auto change mode Low Ambient 2 Cooling only Model ON OFF Cooling CYCLE Fan 30 Min Comp ON OFF Indoor Fan Setting Step Low Outdoor temp Outdoor temp Indoor temp 30 C 20 C 10 C outdoor temperature drops below certain temperature liquid back is prevented by reducing fan speed It can prevent frosting of evaporator and keep cooling operation No matter even if the outdoor temperature reaches 10 C You can Cool your room at your desired temperature all your around Outdoor fan Outdoor pipe temp 0 C outdoor fan On Off control Outdoor temp Cond temp Outdoor temp 10 C Wiwa UW Outdoor fan On Off control 5 WO ipa ees 0 50 100 150 Time Min Service Manual 37 This is operation to preheat the compressor by conducting current through motor coils of the compressor for venting phenomena that liquid refrigerants are income due to difference between temperature of the outside pipe and temperature of the compressor as outdoor temperature becomes low Enter preheat operation of the compressor if meeting 8 conditions as below at the same time where outdoor temperature is less than 5 C where discharge temperature of the compressor is more than 15 C amp where the compressor turns off e Release preheat operatio
62. rrect Direction of diode DO1N DO2N is right Service Manual 61 Troubleshooting Guide Description Cause of error Indoor fan is locked Check flow YES Indoor fan is rotating 1 Check indoor unit remove obstacles in indoor unit fan assembled correctly Description BLDC fan model only Indoor fan is locked or separated Fan connector is not connected to indoor pcb assembly Defective in DC fan driving circuit YES Indoor fan is rotating 2 driving circuit is right Check DC Fan Driving circuit Soldering state amp Direction RO1F RO9F 1 ICO1F ICOSF Q01F Q02F ZDO1F Check soldering state of CN Motor1 amp assembling state of DC Fan connector Cause of error Check flow YES Outdoor fan is rotating 1 Check outdoor unit remove obstacles in outdoor unit 62 Hoom Air Conditioner Outdoor fan is locked BLDC fan model only Outdoor fan is locked by an obstacle ex branch of tree bar etc Fan connector is not connected to outdoor pcb assembly Defective in DC fan driving circuit YES Outdoor fan is rotating 2 DG fan driving circuit is right Check DC Fan driving circuit Soldering state amp Direction RO1F RO5F 1 Q01F Q04F ZDO1F Check connector is not connected to outdoor pcb assembly CN FAN2 Error code Description 10 D Pipe TH is short or Troubles
63. sor and stop the indoor appliances Error is displayed through the indoor error display LED in this time Periodically flickers 8 times The indoor unit detects the fan lock error status even if re operating the unit during 2min delay of Comp Off in spite of release of the fan lock Normal operation is done if re operating the unit after Comp Off for 2min Service Manual 39 The controls will look like the following Signal transmitter 5 1 6 3 4 2 10 KAOH ve OCANCEL 7 9 ON OFF QSET 1 1 AUTOCLEAN 12 8 men 17 PLASMA 18 13 14 15 _ _ RESET 16 Flip up door opened Operation Mode Cooling Operation UF Auto Operation or Auto Changeover A UF Healthy Dehumidification Operation v Heating Operation Xt Cooling Model Heat Pump Model 4 40 Air Conditioner 1 gt 8 9 10 1 12 13 1 1 1 o 17 18 JET BUTTON START STOP BUTTON Used to turn off on the unit OPERATION MODE SELECTION BUTTON AO Used to select the operation mode ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature INDOOR FAN SPEED SELECTOR BUTTON Used to select fan speed in four steps low medium high and CHAOS Used to start or stop the speed cooling and heating operates fan i
64. sure tubing and wrap it with putty 52 Hoom Air Conditioner Error Indicator Cause of Error Troubleshooting Guide Display Indoor Outdoor Indoor Temp sensor error Sensor open or short 2times 2times 2times 2times 3 sec 3 sec Outdoor Temp sensor error Sensor open or short 4times 4times 3 sec Heat Sink sensor error Sensor open or short Heat Sink temp is over 95 5times Communication error DC Peak error Over current error CT2 8times 8times Indoor fan lock error BLDC fan model only 9times 9times gt l Outdoor fan lock error BLDC fan model only 10 10times lilii gt l times 2times 2times lt gt 3 3 sec EEPROM Error EEPROM Check sum Error 1times 3times gltimes 3times 3sec PSC Error PSC Fault Error 1times 4times itimes 4times 3 sec Comp phase Cerrent Error 180 Driver Comp Control Model Only Service Manual 53 Troubleshooting Guide 1 Error indicator of air conditioner 1 Indoor Operating LED Outdoor LEDO1M Red on the outdoor PCB 2 2 more errors occur at same time Air conditioner Off condition Display the error code of product off cause Air conditioner On condition Display the prior Error Code 2 Cancellation of Error indicator 1 Error Code 1 2 3 4 10 Error indi
65. the temperature intake air Temp Compressor off Temp Compressor off temp setting temp 0 5 C on temp setting temp 0 5 C If compressor operates at some operating frequency the operating frequency of compressor cannot be changed within 30 seconds Condition of compressor turned off Operation When intake air temperature stay at the temperature between setting temp 0 5 and setting temp 1 0 C for 3 minutes continuously When intake air temperature reaches below the temperature of setting temp 1 0 Compressor 2 minutes delay The compressor can restart minimum 2 minutes later after compressor off The operating freq step of comp Temp differences Comp Operating frequency over 2 5 Step 7 2 0 2 49 6 1 5 1 99 Step 5 1 0 1 49 Step 4 0 5 0 99 C Step 3 0 0 0 49 C Step 2 0 5 0 C Step 1 The targeting operating freq of comp each model Model Comp Operating frequency Step 1 Step 2 Step3 Step4 Step 5 Fc Step6 Step 7 5 096 EVHO 25 35 40 52 66 74 82 5 126 EBHO EVHO 25 35 40 52 66 74 82 When the dehumidification operation is set by the remote controller the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature Intake air Temp Setting Temp 26 C lt intake air temp
66. unit Check the voltage of power 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 Ass y Fuse Noise Filter Power Module Bridge Diode etc SE tion of Micom is O K Primarily the operating condi ML Check CN DISP1 CN DISP2 of indoor PCB The operation check of the Indoor P C B Ass y 2 The output voltage of power mod 2 12V 3V ule 4 IC04D 7805 4 DC5V 5 ICO1A KIA7036 5 The voltage of micom pin 19 DC4 5VT Procedure Specification Remedy 1 The input voltage of power mod 1 AC230V 30V 1 Check the power outlet ule Check the rated voltage 2 Replace P C B Ass y 4 Replace P C B Ass y 5 Replace P C B Ass y Service Manual 55 Troubleshooting Guide Trouble 2 Product doesn t operate with the remote controller Turn on main power Xm While the compressor has been stopped the compressor does not operate owing to the delaying function for 2 minutes after stopped dm When the compressor stopped Indoor Fan is driven by a low speed At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed is set to the low speed as force E E Caused by the remote controller Caused by other parts except
67. wn to up Secure the tapped piping along the exterior wall using sad dle or equivalent Seal small openings around pipings with a gum type sealer V L cable SRM TIES Trap is required to prevent water from entering into electrical parts 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 equivalent Seal a small opening around the pipings with gum type sealer Service Manual 21 Air purging Air Purging 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 cap illary tubing Water may lead to corrosion of parts in the refrigeration System Therefore the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated to remove any noncondensables and moisture from the system p 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 complet ed Remove the service valve caps

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