3 OperationOperation manual3FDXM25~60F3V1BSplit system air conditioners4P456959-1 – 2017.03bcaedfgha Indoor unitb Outdoor unitc User interfaced Air inlete Air outletf Refrigerant piping and electric wiringg Drain pipeh Earth wire to ground outdoor unit to prevent electricshocks.CAUTIONDo not insert fingers, rods or other objects into the air inletor outlet. Do not remove the fan guard. When the fan isrotating at high speed, it will cause injury.CAUTIONNever touch the internal parts of the controller.Do not remove the front panel. Some parts inside aredangerous to touch and appliance problems may happen.For checking and adjusting the internal parts, contact yourdealer.NOTICEDo not wipe the controller operation panel with benzine,thinner, chemical dust cloth, etc. The panel may getdiscoloured or the coating peeled off. If it is heavily dirty,soak a cloth in water-diluted neutral detergent, squeeze itwell and wipe the panel clean. Wipe it with another drycloth.NOTICENever press the button of the user interface with a hard,pointed object. The user interface may be damaged.NOTICENever pull or twist the electric wire of the user interface. Itmay cause the unit to malfunction.3 Operation3.1 Operation rangeFor combination with R410A outdoor unit, refer to the following table:Outdoor units Cooling HeatingRR71~125 Outdoortemperature–15~46°C DB —Indoortemperature18~37°C DB12~28°C WB—RQ71~125 Outdoortemperature–5~46°C DB –9~21°C DB–10~15°C WBIndoortemperature18~37°C DB12~28°C WB10~27°C DBRXS25~60 Outdoortemperature–10~46°C DB –15~24°C DB–16~18°C WBIndoortemperature18~32°C DB 10~30°C DB2MXS50 Outdoortemperature10~46°C DB –15~24°C DB–16~18°C WBIndoortemperature18~32°C DB 10~30°C DB3MXS40~684MXS68~805MXS90Outdoortemperature–10~46°C DB –15~24°C DB–16~18°C WBIndoortemperature18~32°C DB 10~30°C DBRZQG71~140 Outdoortemperature–15~50°C DB –19~21°C DB–20~15.5°C WBIndoortemperature18~37°C DB12~28°C WB10~27°C DBRZQSG71~140 Outdoortemperature–15~46°C DB –14~21°C DB–15~15.5°C WBIndoortemperature20~37°C DB14~28°C WB10~27°C DBRZQ200~250 Outdoortemperature–5~46°C DB –14~21°C DB–15~15°C WBIndoortemperature20~37°C DB14~28°C WB10~27°C DBFor combination with R32 outdoor unit, refer to the following table:Outdoor units Cooling Heating2MXM503MXM40~684MXM68~805MXM90Outdoortemperature–10~46°C DB –15~24°C DB–16~18°C WBIndoortemperature–18~32°C DB 10~30°C DBRXM25~60 Outdoortemperature–10~46°C DB –15~24°C DB–16~18°C WBIndoortemperature18~32°C DB 10~30°C DBRZAG71~140 Outdoortemperature–20~52°C DB –19.5~21°C DB–20~15.5°C WBIndoortemperature18~37°C DB12~28°C WB10~27°C DB