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The document provides proprietary and safety guidance, emphasizing correct installation and instructions to prevent malfunction, property damage, injury, or death. It organizes technical information including nomenclature, wiring and refrigerant flow diagrams, outdoor unit functions, control methods, protection controls, PCB and DIP switch settings, test runs, diagnostics, component checks, and extensive error code tables.",{"@graph":69,"@context":126},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/variable-refrigerant-flow-outdoor-units-60-to-420-tons-service-manual/640839/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/variable-refrigerant-flow-outdoor-units-60-to-420-tons-service-manual/640839.png","ImageObject",300,407,{"name":92,"@type":93},"GGG","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-27","2026-10-22",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118,122],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of this service manual for LG Variable Refrigerant Flow outdoor units?","Question",{"text":112,"@type":113},"It provides technical instructions and guidance for installation, wiring, control functions, diagnostics, and troubleshooting of the outdoor units within the stated tonnage range.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Why are the safety precautions and correct installation familiarity required?",{"text":117,"@type":113},"The manual states that familiarity is required for proper installation and that following the instructions prevents product malfunction, property damage, injury, or death.",{"name":119,"@type":110,"acceptedAnswer":120},"What kinds of diagrams and technical references are included?",{"text":121,"@type":113},"The contents list nomenclature, wiring diagrams, refrigerant flow diagrams, and additional sectional diagram references for outdoor unit functions and heat recovery units.",{"name":123,"@type":110,"acceptedAnswer":124},"How are troubleshooting and errors handled in the manual?",{"text":125,"@type":113},"The manual includes test run procedures, self-diagnostics checks, component checking steps (such as compressors, fan motors, expansion valves, inverter components, sensors, and valves), and extensive error code tables and error code sections.","https://schema.org",{"og:url":83,"og:type":128,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":130,"canonical":83},"index,follow",{"doc_id":132,"site_id":62},640839,1792865385,{"code":4,"msg":5,"data":135},{"doc_id":132,"user_id":136,"nickname":92,"user_avatar":137,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":138,"file_id":139,"file_url":140,"file_type":141,"file_size":142,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":143,"language":144,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":145,"faqs":146,"seo_title":147,"seo_description":67,"update_tm":148,"read_time":149},962093532725,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","SERVICE MANUAL  \nVariable Refrigerant Flow Outdoor Units  \n6.0 to 42.0 Tons  \nPROPRIETARY DATA NOTICE  \nThis document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A. , Inc. , and are disclosed by LG Electronics U.S.A. , Inc. only in confidence.  \n Do not throw away, destroy, or lose this manual.  \nPlease read carefully and store in a safe place for future reference.  \nContent familiarity is required for proper installation.  \nThe instructions included in this manual must be followed to prevent product malfunction, property damage, injury, or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described by the summary list of safety precautions on page 4.  \nFor more technical materials such as submittals, catalogs, engineering, installation, best practices, and owner’s manuals, [visit www.lghvac.com](visit www.lghvac.com).  \nFor continual product development, LG Electronics U. S.A. , Inc. reserves the right to change specifications without notice.  \n© LG Electronics U. S.A. , Inc.  \n TABLE OF CONTENTS  \nSafety Precautions ............................................................................. 4-7  \nNomenclature......................................................................................... 8  \nWiring Diagrams ............................................................................... 9-16  \nRefrigerant Flow Diagrams............................................................ 17-42  \nOutdoor Unit Functions ................................................................. 43-87  \nBasic Control ................................................................................ 43-44  \nNormal Operation/Compressor Control ......................................... 43  \nMaster-Slave EEVs/Fan Motor Control ......................................... 44  \nSpecial Control ............................................................................. 45-47  \nOil Return Control .......................................................................... 45  \nDefrost Control /Partial Defrost Control ........................................ 46  \nStop Operation / Oil Equalizing ..................................................... 47  \nProtection Control......................................................................... 48-49  \nPressure Protection Control .......................................................... 48  \nDischarge Temperature/Inverter Protection ................................... 49  \nOther Controls .............................................................................. 50-53  \nInitial Setup............................................................................... 50-53  \nQuick Control ................................................................................. 53  \nSetting Optional Modes ................................................................ 54-87  \nHeat Recovery Units....................................................................... 88-95  \nParts Functions .................................................................................. 88  \nDimensional Diagrams ................................................................. 89-91  \nWiring Diagram .................................................................................. 92  \nRefrigerant Circuit Diagram ............................................................... 93  \nFunctions ...................................................................................... 94-95  \nPCB Settings ................................................................................. 96-110  \nOutdoor Unit DIP Switch Settings...................................................... 96  \nHeat Recovery Unit Settings ...................................................... 97-102  \nIndoor Unit Addressing ....................................................","cbCaifddX3hTx4VU","https://ap.wps.com/l/cbCaifddX3hTx4VU","pdf",13515812,235,"English","# Safety Precautions\n# Nomenclature\n# Wiring Diagrams\n# Refrigerant Flow Diagrams\n# Outdoor Unit Functions\n## Basic Control\n## Normal Operation/Compressor Control\n## Master-Slave EEVs/Fan Motor Control\n## Special Control\n## Oil Return Control\n## Defrost Control/Partial Defrost Control\n## Stop Operation/Oil Equalizing\n## Protection Control\n## Pressure Protection Control\n## Discharge Temperature/Inverter Protection\n## Other Controls\n# Initial Setup\n# Quick Control\n# Setting Optional Modes\n# Heat Recovery Units\n## Parts Functions\n## Dimensional Diagrams\n## Wiring Diagram\n## Refrigerant Circuit Diagram\n## Functions\n# PCB Settings\n## Outdoor Unit DIP Switch Settings\n## Heat Recovery Unit Settings\n## Indoor Unit Addressing\n## Pipe Detection Addressing\n# Troubleshooting Main Components\n## Test Run\n## Main Component Errors\n## Self Diagnostics Check\n## Checking Components\n# Error Codes\n## Error Code General Information\n## Error Code Tables\n## Error Codes\n# Replacing/Checking Electrical Components\n## Replacing the Inverter PCB Heat Sink\n## Checking Input Voltage and DC Voltage","[{\"question\":\"What is the purpose of this service manual for LG Variable Refrigerant Flow outdoor units?\",\"answer\":\"It provides technical instructions and guidance for installation, wiring, control functions, diagnostics, and troubleshooting of the outdoor units within the stated tonnage range.\"},{\"question\":\"Why are the safety precautions and correct installation familiarity required?\",\"answer\":\"The manual states that familiarity is required for proper installation and that following the instructions prevents product malfunction, property damage, injury, or death.\"},{\"question\":\"What kinds of diagrams and technical references are included?\",\"answer\":\"The contents list nomenclature, wiring diagrams, refrigerant flow diagrams, and additional sectional diagram references for outdoor unit functions and heat recovery units.\"},{\"question\":\"How are troubleshooting and errors handled in the manual?\",\"answer\":\"The manual includes test run procedures, self-diagnostics checks, component checking steps (such as compressors, fan motors, expansion valves, inverter components, sensors, and valves), and extensive error code tables and error code sections.\"}]","Variable Refrigerant Flow Outdoor Units - 6.0 to 42.0 Tons - Service manual | PDF",1792711746,592]