2 About this documentUser reference guide3FDXM25~60F3V1B(9)Split system air conditioners4P543324-1 – 2018.07▪ Units are marked with the following symbol:This means that electrical and electronic products may NOT bemixed with unsorted household waste. Do NOT try to dismantlethe system yourself: the dismantling of the system, treatment ofthe refrigerant, of oil and of other parts must be done by anauthorized installer and must comply with applicable legislation.Units must be treated at a specialized treatment facility for reuse,recycling and recovery. By ensuring this product is disposed ofcorrectly, you will help to prevent potential negative consequencesfor the environment and human health. For more information,contact your installer or local authority.▪ Batteries are marked with the following symbol:This means that the batteries may NOT be mixed with unsortedhousehold waste. If a chemical symbol is printed beneath thesymbol, this chemical symbol means that the battery contains aheavy metal above a certain concentration.Possible chemical symbols are: Pb: lead (>0.004%).Waste batteries must be treated at a specialized treatment facilityfor reuse. By ensuring waste batteries are disposed of correctly,you will help to prevent potential negative consequences for theenvironment and human health.2 About this documentThank you for purchasing this product. Please:▪ Read the documentation carefully before operating the userinterface to ensure the best possible performance.▪ Keep the documentation for future reference.Target audienceEnd usersINFORMATIONThis appliance is intended to be used by expert or trainedusers in shops, in light industry, and on farms, or forcommercial and household use by lay persons.Documentation setThis document is part of a documentation set. The complete setconsists of:▪ General safety precautions:▪ Safety instructions that you must read before operating yoursystem▪ Format: Paper (in the box of the indoor unit)▪ Operation manual:▪ Quick guide for basic usage▪ Format: Paper (in the box of the indoor unit)▪ User reference guide:▪ Detailed step-by-step instructions and background informationfor basic and advanced usage▪ Format: Digital files on http://www.daikineurope.com/support-and-manuals/product-information/Latest revisions of the supplied documentation may be available onthe regional Daikin website or via your installer.The original documentation is written in English. All other languagesare translations.2.1 User reference guide at a glanceChapter DescriptionGeneral safety precautions Safety instructions that you MUSTread before operationAbout the documentation What documentation exists for theuserAbout the system ▪ Components▪ User interfaceBefore operation What to do before starting operationOperation How to operate the systemEnergy saving and optimumoperationHow to save energyMaintenance and service How to maintain and service the unitTroubleshooting What to do in case of problemsDisposal How to dispose of the systemGlossary Definition of terms3 About the systemINFORMATIONThe sound pressure level is less than 70 dBA.WARNING: FLAMMABLE MATERIALThe R32 refrigerant (if applicable) in this unit is mildlyflammable. Refer to the outdoor unit specifications for thetype of refrigerant to be used.WARNING▪ Do not modify, disassemble, remove, reinstall or repairthe unit yourself as incorrect dismantling or installationmay cause an electric shock or fire. Contact yourdealer.▪ In case of accidental refrigerant leaks, make sure thereare no naked flames. The refrigerant itself is entirelysafe and non-toxic. R410A is a non-combustiblerefrigerant, and R32 is a mildly flammable refrigerant,but they will generate a toxic gas when theyaccidentally leak into a room where combustible airfrom fan heaters, gas cookers, etc. is present. Alwayshave qualified service personnel confirm that the pointof leakage has been repaired or corrected beforeresuming operation.NOTICEImproper installation or attachment of equipment oraccessories could result in electric shock, short-circuit,leaks, fire or other damage to the equipment. Only useaccessories, optional equipment and spare parts made orapproved by Daikin.3.1 ComponentsINFORMATIONThe following illustration is an example and might NOTmatch your system layout.