LG ARUV025GSD0 Installation Manual Download Page 1 | Manualshive

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LG ARUV025GSD0 Installation Manual Download Page 1

MFL67798019

Rev.00_061518

INSTALLATION MANUAL

AIR

CONDITIONER

www.lg.com

Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it thorough-
ly.

Copyright © 2014 - 2018 LG Electronics Inc. All Rights Reserved.

ENGLISH

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Summary of Contents for ARUV025GSD0

Page 1: ... completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thorough ly Copyright 2014 2018 LG Electronics Inc All Rights Reserved ENGLISH ...

Page 2: ...condi tioner is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You c...

Page 3: ...d technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock For re installation of the installed product always contact a dealer or an Authorized Servic...

Page 4: ...sult the dealer regarding the appropriate measures to prevent the safety limit from being ex ceeded Should the refrigerant leak and cause the safety limit to be exceeded harzards due to lack of oxygen in the room could result Operation Do not damage or use an unspecified power cable There is risk of fire electric shock explosion or injury Use a dedicated power cable for this appliance There is ris...

Page 5: ... the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting Do not install the product where it is exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operation Do not use the air conditioner in spe...

Page 6: ... during and after operation It can cause a burn or frostbite Do not operate the air conditioner with the panels or guards removed Rotating hot or high voltage parts can cause injuries Do not directly turn off the main power switch after stopping operation Wait at least 5 minutes before turning off the main power switch Otherwise it may result in water leakage or other problems Auto addressing shou...

Page 7: ...Work 29 Pipe Drawing Out 30 Selection of Refrigerant Piping 31 Refrigerant piping system 38 Refrigerant charging 39 Distribution Method 40 Branch pipe Fitting 44 Leak Test and Vacuum drying 46 Heat insulation of refrigerant piping 47 ELECTRICAL WIRING 47 Caution 49 Control box and connecting position of wiring 50 Communication and Power Cables 51 Wiring of main power supply and equipment capacity ...

Page 8: ...switch setting Determination of division work The vacuum pump used must have a capacity of reaching at least 5 torr more than 1 hour Vacuum drying Recharge correctly as calculated in this manual and record the amount of added refrigerant Additional charge of refrigerant Make sure there are no gaps left between the facing materials used on the ceiling Fit facing panels Run each indoor unit in turn ...

Page 9: ...d Amount kg 1 1 4 1 4 lbs 2 2 3 1 3 1 Net weight kg 45 59 59 lbs 99 130 130 Dimensions WxHxD mm 870x655x320 950x834x330 950x834x330 inch 34 3 25 8 12 6 37 4 32 8 13 0 37 4 32 8 13 0 Piping Connections Liquid Pipes mm inch 9 52 3 8 9 52 3 8 9 52 3 8 Gas Pipes mm inch 15 88 5 8 15 88 5 8 15 88 5 8 System HP 5 6 Model ARUV050GSD0 ARUV060GSD0 Refrigerant Precharged Amount kg 1 4 1 9 lbs 3 1 5 1 Net we...

Page 10: ...pipe must not be used Do not heat pipes more than necessary to prevent them from softening Be careful not to install wrongly to minimize economic loss because it is expensive in comparison with R22 The refrigerant R410A has the property of higher operating pressure in comparison with R22 Therefore all materials have the characteristics of higher resisting pressure than R22 ones and this characteri...

Page 11: ...ing a lot of sunshine in case of in stalling the product at a place with a high humidity in winter near beach coast lake etc Ex Rooftop where sunshine always shines Performance of heating will be reduced and preheat time of the indoor unit may be length ened in case of installing the outdoor unit in winter at following location Shade position with a narrow space Location with much moisture in neig...

Page 12: ...pace The unit of values is mm In case of obstacles on the suction side 1 Stand alone installation 2 Collective installation 500 or less more 1 000 or 100 or more 100 or more 100 or more 100 or more 500 or less more 1 000 or 150 or more 150 or more 100 or more 150 or more 100 or more 200 or more 1 000 or more 300 or more 500 or less more 1 000 or 100 or more 1 000 or more 200 or more 300 or more Un...

Page 13: ...In case of obstacles on the discharge side 1 Stand alone installation 500 or more 500 or less more 1 000 or 500 or more 2 Collective installation 1 000 or more 100 or more 500 or less 1 000 or more 1 000 or more 100 or more Unit mm ...

Page 14: ...discharge side is higher than the unit 1 Stand alone installation H L 100 or more 500 or more L 500 or less 1 000 or more H 250 or more 1 000 or more 2 Collective installation L H 300 or more 1 000 or more 100 or more L 500 or less 1 000 or more H 300 or more 1 250 or more 100 or more L H L H L H L H Unit mm ...

Page 15: ...the unit 1 Stand alone installation 2 Collective installation H L 300 or more 1 500 or more 100 or more 500 or less more 1 000 or H L 300 or more 1 500 or more 100 or more H L 100 or more 500 or more 500 or less more 1 000 or H L 300 or more 1 000 or more L H L H L H L H Unit mm ...

Page 16: ...When installing several units leave space between each block as shown below considering passage for air and people 1 One row of stand alone installation 100 or more 2 000 or more 200 or more 1 000 or more 2 Rows of collective installation 2 or more L should be smaller than H L 300 or more 3 000 or more H 600 or more 1 500 or more 100 or more L H Unit mm ...

Page 17: ... Install a suction and discharge duct not to let in snow or rain Install the outdoor unit not to come in contact with snow directly If snow piles up and freezes on the air suction hole the system may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher installation console by 50cm than the average snowfall an nual average snowfall if it ...

Page 18: ...nstable resulting in a fall Use 2 belts of at least 8 m long Place extra cloth or boards in the locations where the casing comes in contact with the sling to prevent damage Hoist the unit making sure it is being lifted at its center of gravity When carrying the suspended unit pass the ropes between legs of base panel under the unit Always lift the unit with ropes attached at four points so that im...

Page 19: ...g fixed The outdoor unit supports should have minimum height of 200mm Anchor bolts must be inserted at least 75mm At least 100mm At least 100mm At least 100mm At least 100mm At least 100mm At least 100mm Center of the Unit For outdoor units should not be supported only by the corner supports Center of the Unit a b e e c d ARUV025GSD0 ARUV030GSD0 ARUV040GSD0 ARUV050GSD0 ARUV060GSD0 a 920 1 090 b 61...

Page 20: ...the bolt It may cause the unstable state of the outdoor settlement and may cause freezing of the heat exchanger resulting in abnormal operations Be sure to remove the Pallet Wood Support of the bottom side of the outdoor unit before welding Not removing Pallet Wood Support causes hazard of fire during welding WARNING Install where it can sufficiently support the weight of the outdoor unit If the s...

Page 21: ... to let burrs drop in the tubing Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper tube in a bar or die as in dicated dimension in the table above Check Compare the flared work with figure below If flare is noted to be defective cut off the flared section and do flaring work again Indoor unit kW Btu h Pipe A Gas Liquid Gas Liquid 5 6 19 100 1 2 1 4 0 5 0 8 0 ...

Page 22: ...tops Do not apply excessive force to the shutoff valve Doing so may break the valve body as the valve is not a backseat type Always use the special tool 3 Make sure to tighten the cap securely pipe size tightening torque N m A mm flare shape Ø9 52 38 4 12 8 13 2 90 2 45 2 A R 0 4 0 8 Ø12 7 55 6 16 2 16 6 Ø15 88 75 7 19 3 19 7 CAUTION Always use a charge hose for service port connection After tight...

Page 23: ...ene Methylene over 120 C the heat resistance temperature Add the insulation over 10mm thickness at high humidity environment Indoor unit Thermal insulator accessory Fastening band accessory Refrigerant piping Closing shutoff valve 1 Remove the cap and turn the valve clockwise with the hexagon wrench 2 Securely tighten the valve until the shaft contacts the main body seal 3 Make sure to tighten the...

Page 24: ...t cold and warm Clogging of EEV Capillary Gas shortages Degradation of refrigerant oil Poor insulation of the compressor Do not cold and warm Counter measure No moisture in the pipe Until the connection is completed the plumbing pipe entrance should be strictly controlled Stop plumbing at rainy day Pipe entrance should be taken side or bottom When removal burr after cutting pipe pipe entrance shou...

Page 25: ...egradation of refrigerant oil Because it is flammable it is strictly prohibited to use Carbon dioxide Degrade the drying characteristics of gas Chevron Gas Toxic gas occurs when exposed to direct flame 2 Always use a pressure reducing valve 3 Please do not use commercially available antioxidant The residual material seems to be the oxide scale is observed In fact due to the organic acids generated...

Page 26: ...anching parts Use hexagonal wrench to open close the valve Liquid pipe Gas pipe CAUTION Please block the pipe knock outs of the front and side panels after installing the pipes Animals or foreign objects may be brought in to damage wires WARNING Always careful not to leak the refrigerant during welding The refrigerant generates poisonous gas harmful to human body if combusted Do not perform weldin...

Page 27: ...nt Pipe Draw Out Right Side Pipe Draw Out Bottom Side Pipe Draw Out Rear Side Pipe Draw Out Refrigerant Pipe Regulator Nitrogen Taping Valve Nitrogen Nitrogen Direction Direction Nitrogen Direction Preparation Work Use Knock Outs of Base Pan of the outdoor unit for Left Right or Bottom pipe drawing outs Align the center of the piping and sufficiently tighten the flare nut by hand Tighten the flare...

Page 28: ... Gas pipe 28 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT ENGLISH Removal Area for Liquid Gas pipe bottom side connections CAUTION Do not give damage to the pipe base during the Knock Out work Proceed to pipe work after removing burr after Knock Out work Perform sleeve work to prevent damage to the wire when connecting wires using knock Outs Take care so that there is no thermal damage on the ...

Page 29: ...ut Pipe Knock Out for Liquid Gas pipes Pictures may differ depending on the model Method of drawing out pipes on the bottom side Drawing out common pipe through base panel Remove only liquid gas pipe Knock out Liquid pipe Gas pipe Method of drawing out pipes on the rear side Proceed with the pipe work as shown in the below figure for rear side pie drawing out Pipe Knock Out for Liquid Gas pipes Pi...

Page 30: ...nnecting pipe Connecting pipe size of indoor unit Outdoor unit capacity HP Liquid pipe mm inch Gas pipe mm inch 2 5 Ø9 52 3 8 Ø15 88 5 8 3 Ø9 52 3 8 Ø15 88 5 8 4 Ø9 52 3 8 Ø15 88 5 8 5 Ø9 52 3 8 Ø15 88 5 8 6 Ø9 52 3 8 Ø19 05 7 8 Indoor unit capacity kW Btu h Liquid pipe mm inch Gas pipe mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 600 Ø9 52 3 8 Ø15 88 5 8 22 4 76 400 Ø9 52 3 8 Ø19 05 3 4 36 4 12...

Page 31: ...h of Y branch to be 0 5m that of header to be 1m calcu lation purpose Outdoor unit capacity HP 2 5 3 4 5 6 T Total pipe length m 50 80 85 100 100 A B C a b c d e L Longest pipe length m Equivalent pipe length 30 40 50 50 50 A B C D e l Longest pipe length after 1st branch m 20 30 30 30 30 B C D e H Difference in height m Outdoor Unit Indoor Unit 15 15 15 15 15 H h Difference in height m Indoor Uni...

Page 32: ...oor unit to first branch A Outdoor unit total capacity HP Liquid pipe mm inch Gas pipe mm inch 2 5 Ø9 52 3 8 Ø15 88 5 8 3 Ø9 52 3 8 Ø15 88 5 8 4 Ø9 52 3 8 Ø15 88 5 8 5 Ø9 52 3 8 Ø15 88 5 8 6 Ø9 52 3 8 Ø19 05 3 4 WARNING When the any one or both of below conditions are satisfied the diameter of main pipe A must be increased according to below table The equivalent length between outdoor unit and the...

Page 33: ...Pipe length after header branching a f It is recommended that difference in length of the pipes connected to the Indoor Units is minimized Performance difference between Indoor Units may occur Outdoor unit capacity HP 2 5 3 4 5 6 T Total pipe length m 50 80 85 100 100 A B C a b c d e L Longest pipe length m Equivalent pipe length 30 40 50 50 50 A B C D e l Longest pipe length after 1st branch m 20...

Page 34: ...onnected to the Indoor Unit is minimized Performance difference between Indoor Units may occur When the any one or both of below conditions are satisfied the diameter of main pipe A must be increased according to below table The equivalent length between outdoor unit and the farthest indoor unit is 90m or more Liquid and Gas pipes are increased Outdoor unit capacity HP 2 5 3 4 5 6 T Total pipe len...

Page 35: ...e mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 600 Ø9 52 3 8 Ø15 88 5 8 22 4 76 400 Ø9 52 3 8 Ø19 05 3 4 36 4 124 200 Ø9 52 3 8 Ø22 2 7 8 Refrigerant pipe diameter from outdoor unit to first branch A Outdoor unit total capacity HP Liquid pipe mm inch Gas pipe mm inch 2 5 Ø9 52 3 8 Ø15 88 5 8 3 Ø9 52 3 8 Ø15 88 5 8 4 Ø9 52 3 8 Ø15 88 5 8 5 Ø9 52 3 8 Ø15 88 5 8 6 Ø9 52 3 8 Ø19 05 3 4 ...

Page 36: ...5 3 4 28 0 95 900 Ø9 52 3 8 Ø22 2 7 8 WARNING In case of pipe diameter B connected after first branch is bigger than the main pipe diame ter A B should be of the same size with A 36 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT ENGLISH CAUTION Bending radius should be at least twice the diameter of the pipe Bend pipe after 500mm or more from branch or header Do not bend U type It may cause Perf...

Page 37: ...unit Additional charge kg Total liquid pipe Ø9 52 mm x 0 061 kg m Total liquid pipe Ø6 35 mm x 0 022 kg m CF value of indoor unit Amount refrigerant of Indoor units Example 4Way Ceiling Cassette 14 5kW 1ea Ceiling concealed Duct w7 3kW 2ea Wall Mounted 2 3kW 4ea CF 0 64 1 0 26 2 0 24 4 2 12 kg Attach the additional refrigerant table of IDU CAUTION Do not connect 0 or 1 series of indoor unit ex ARN...

Page 38: ...nit type installation position should be over 2m from the floor Wall mounted type Cassette type Adoption of ventilation system choose ordinary ventilation system or building ventilation system Limitation in piping work Prepare for earthquake and thermal stress Liquid pipe Gas pipe Ⓐ Manifold Gauge Ⓑ Low pressure side Handle Ⓒ High pressure side Handle Total amount of refrigerant in the system 0 44...

Page 39: ...GLISH Ensure that the branch pipes are attached vertically Header 1st 1st 1st Main pipe Distribution 2nd 2nd 3rd 3nd Main pipe Distribution 1st 3rd 3rd main pipe distribution 2nd Horizontal Distribution Vertical Distribution The others Distribution Method ...

Page 40: ...ation If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting section should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit Ⓐ To Outdoor Unit Ⓑ To Indoor Unit The indoor unit having larger capacity must be in stalled closer to Ⓐ than smaller one If the diameter of the refrigerant...

Page 41: ...hould be insulated with the insulator in each kit Joints between branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above Pinched pipe B Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe...

Page 42: ...D15 88 I D19 05 I D12 7 I D12 7 I D19 05 I D15 88 I D12 7 I D19 05 O D12 7 I D6 35 I D15 88 371 394 83 11 0 70 2 3 3 2 ARBLN14521 471 517 125 120 130 I D19 05 I D15 88 I D12 7 I D19 05 I D22 2 I D41 3 I D38 1 I D41 3 O D34 9 I D34 9 I D34 9 I D22 2 I D28 58 I D28 58 I D38 1 I D41 3 I D34 9 I D38 1 O D22 2 O D38 1 O D15 88 O D28 58 90 2 3 3 3 2 2 3 416 444 96 O D15 88 I D9 52 I D12 7 O D12 7 I D6 3...

Page 43: ...00 160 ID15 88 ID12 7 ID19 05 ID15 88 ID22 2 ID28 58ID25 4 120 120 150 360 ID9 52 ID9 52 ID6 35 ID6 35 ID9 52 ID12 7 7 branch ARBL107 120 150 160 580 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 700 120 ID6 35 ID9 52 ID9 52 ID6 35 ID9 52 ID12 7 10 branch ARBL1010 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22...

Page 44: ... when pressure is applied and when the pressure drop is checked apply the following correction factor There is a pressure change of approximately 0 1 kg cm2 0 01 MPa for each 1 C of temperature difference Correction Temp at the time of pressurization Temp at the time of check X 0 1 For example Temperature at the time of pressurization 3 8 MPa is 27 C 24 hour later 3 73 MPa 20 C In this case the pr...

Page 45: ... 100 7kPa vac uum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after main taining the system in vacuum for 1 hr Scale Use a graviometer One that can measure down to 0 1kg If you are unable to prepare such a high precision gravimeter you may use a charge cylinder Indoor unit S...

Page 46: ... insulate gas or low pressure pipe and liquid or high pressurepipe together Liquid pipe Gas pipe Power cables Finishing tape Insulating material Communication cables Be sure to fully insulate connecting portion These parts are not insulated Good example Liquid pipe Communication cables Communication cables Separ ation Gas pipe Power cables Insulating material Power cables Ⓐ Sleeve Ⓑ Heat insulatin...

Page 47: ...ired with the same multiplecore cable the resultant poor trans mitting and receiving will cause erroneous operations mark in the figure below Only the communication cable specified should be connected to the terminal block for Outdoor Unit communication CAUTION Be sure to correct the outdoor unit to earth Do not connect ground wire to any gas pipe liquid pipe lightening rod or telephone earth line...

Page 48: ...mistake check damaged parts in control box and replace them Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block Round pressure terminal Power cable When none are available follow the instructions below Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat When connecting...

Page 49: ...d PCB must be connected between them When connecting communication cable between outdoor unit and indoor units with shielded cable connect the shield ground to the earth screw Side panel O N L 1 2 3 4 K S D O 4 H O N L 1 2 3 4 K S D O 4 H O N L 1 2 3 4 K S D O 4 H ON L1 2 3 4 KSDO4H PI 485 PI 485 PI 485 PI 485 Bracket WARNING The temperature sensor for outdoor air should not be exposed to direct s...

Page 50: ...n to the additional length of cable involved If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased If the cable are laid inside conduits then the following point must also be taken into ac count when grouping various cable together for introduction into the conduits Power cable including power supply to air conditioner and commun...

Page 51: ...o disconnect each of indoor unit separately from the power supply CAUTION Some installation site may require attachment of an earth leakage breaker If no earth leakage breaker is installed it may cause an electric shock Do not use anything other than breaker and fuse with correct capacity Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire WARNING Fol...

Page 52: ...eakage Communication disorder by noise effect and motor current leakage without connec tion to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple power sources If th...

Page 53: ...ire BUS type STAR type Abnormal operation can be caused by com munication defect when connection of communication cable is installed like below figure STAR type Connection of communication cable must be installed like below figure between indoor unit to outdoor unit ...

Page 54: ...Terminal block Ground wire Power ground Cable Hold power cable ODU IDU Power cable Power ground Cable ODU IDU Power cable Power ground Cable ODU IDU Power cable ODU IDU Communication cable ODU IDU Communication cable Power ground Cable ODU IDU Power cable Main power Terminal block Ground wire Insulation sleeves attachment Insulation sleeves attachment Fix firmly not to be dispaced ODU IDU Communic...

Page 55: ...ould be changed when the power is OFF Checking the initial display The number is sequentially appeared at the 7 segment in 5 seconds after applying the power This number represents the setting condition For example represents R410A 10HP Initial display order Example ARUV060GSD0 Order No Note 2 6 Model capacity 1 Cooling only 2 Heat pump 38 380V 46 460V 22 220V 1 Standard 5 Cold temperature area 6 ...

Page 56: ...d are indicated for 30 sec onds on 7 segment LED of the outdoor unit PCB After completing addressing address of each indoor unit is indicated on the wired remote con trol display window CH01 CH02 CH03 CH06 Indicated as numbers of connected in door units Main PCB 7 Segment 7 Segment TACT SW02 Auto Addressing TACT SW01 Auto Addressing DIP S W DIP S W CAUTION In replacement of the indoor unit PCB alw...

Page 57: ...wired remote control or indoor unit display window It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 02 15 means connection of 15 indoor units and Automatic addressing is completed normally Automatic addressing start Waiting 3 minutes Power On Press RED Button for 5 s SW01C 7 segment LED 88 Don t press RED Button SW01C Waiting about 2 7 mi...

Page 58: ...ght low noise 1 x x x x Night low noise 2 x x x x Forced cooling mode x x x x x Vaccum mode x x x x x Target pressure adjusting x x x x CAUTION X mark means DIP switch must be off Otherwise the function may not perates correctly If each DIP switch doesn t set correctly unit will operate abnormally In case of proceeding test run start after checking if all indoor unit is off ...

Page 59: ... Saving power consumption Saving Power Consumption operation is the function which enables efficient operation by lower ing the maximum power consumption value Mode setting method Main power OFF Main power ON PCB DIP swich ON Step 1 No 3 Step 2 No 4 Main power OFF Main power ON PCB DIP swich ON Step 1 No 1 No 4 Step 2 No 2 No 3 Function setting Model 2 5 HP 3 HP 4 HP 5 HP 6 HP Step 1 A 8 5 14 16 2...

Page 60: ...frigerant to this service port with charge hoses Main power ON Refrigerant charging Main power OFF PCB DIP swich No 1 OFF Forced Cooling Operation This function is used for creating vacuum in the system after compressor replacement ODU parts replacement or IDU addition replacement Mode setting method ...

Page 61: ...r OFF PCB DIP swich No 6 ON Connect the manifold valve and Vaccum pump to this service port with charge hoses Main power ON Vacuum drying Main power OFF PCB DIP swich No 6 OFF Vaccum mode Adding the refrigerant in winter Mode setting method ...

Page 62: ...1 U5 TACT SW02 Select low preesure UE U4 TACT SW02 U5 TACT SW01 PCB DIP swich No 5 No 6 OFF Main power OFF Target pressure adjusting Mode setting method CAUTION Ask an authorized technician to setting a function If do not use a function set an off mode Change a power consumption or capacity Setting No low pressure kPa 1 699 2 739 3 778 4 843 5 895 6 908 ...

Page 63: ...r unit PCB 0 4 Drain pump Malfunction of drain pump 0 5 Communication error outdoor unit indoor unit Failing to receive outdoor unit signal in indoor unit PCB 0 6 Outlet pipe temperature sensor of in door unit Outlet pipe temperature sensor of indoor unit is open or short 0 9 Indoor EEPROM Error In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF 1 0 Poor fan motor operat...

Page 64: ...door Unit Low Pressure Sensor open or short 4 3 Outdoor Unit High Pressure Sensor Fault Outdoor Unit High Pressure Sensor open or short 4 4 Outdoor Unit Air Temperature Sensor Fault Outdoor Unit Air Temperature Sensor open or short 4 5 Outdoor Unit Heat Exchanger Tempera ture Sensor Front side Fault Outdoor Unit Heat Exchanger Temperature Sensor Front side open or short 4 6 Outdoor Unit Suction Te...

Page 65: ...r Unit 7 3 Instant Over Current Peak of Outdoor Unit PFC Instant Over Current Peak of Outdoor Unit PFC 8 6 Outdoor Unit Main PCB EEPROM Error Communication Fail Between Outdoor Unit Main MICOM and EEPROM or omitting EEPROM 1 0 6 Master Outdoor Unit FAN IPM Fault Error Instant Over Current at Master Outdoor Unit Fan IPM 1 1 3 Outdoor Unit Liquid pipe Temperature Sensor Error Liquid pipe temperature...

Page 66: ...vided into 2 or more refrigerant systems and each system is independent amount of replenished refrigerant of each system shall be adopted Amount of replenished refrigerant per one outdoor unit system Amount of replenished refrigerant at factory shipment Amount of additionally replenished refrigerant depending on piping length or piping diameter at customer Outdoor unit Indoor unit Outdoor unit Ind...

Page 67: ...nical ventilator Reducing the outdoor refrigerant qty R410A Refrigerant concentration kg m3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where indoor unit is installed m3 In case the result of calculation exceeds the limiting concentration perform the same calculations by shifting to the second smallest and the third smallest rooms until at last the ...

Page 68: ...he windbreak for easy air flow Select a well drained place CAUTION Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do not install the product where it could be exposed to sea wind salty wind di rectly It can result corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or...

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