Daikin FXSN71A2VEB Installation And Operation Manual

Also see for FXSN-A2: Installer and user guide

7 Maintenance and serviceInstallation and operation manual9FXSN50~112A2VEBCO₂ Conveni-Pack: indoor unit4P602815-1F – 2021.076.2.2 Special heating operation modesOperation DescriptionDefrost To prevent a loss of heating capacity due to frostaccumulation in the outdoor unit, the system willautomatically switch to defrost operation.During defrost operation, the indoor unit fan willstop operation, and the following icon will appear onthe home screen:In order to protect the system, cold air may comefrom the indoor unit when the defrost operationstarts on the outdoor unit side.The system will resume normal operation afterapproximately 6 to 8 minutes.Hot start During hot start, the indoor unit fan will stopoperation, and the following icon will appear on thehome screen:6.3 To operate the systemINFORMATIONFor setting of the operation mode or other settings, see thereference guide or operation manual of the user interface.7 Maintenance and service7.1 Precautions for maintenance andserviceWARNING: System contains refrigerantunder very high pressure.The system MUST be serviced by qualified persons ONLY.NOTICEMaintenance MUST be done by an authorised installer orservice agent.We recommend performing maintenance at least once ayear. However, applicable legislation might require shortermaintenance intervals.CAUTIONDo NOT insert fingers, rods or other objects into the airinlet or outlet. When the fan is rotating at high speed, it willcause injury.NOTICENEVER inspect or service the unit by yourself. Ask aqualified service person to perform this work. However, asend user, you may clean the air filter, suction grille, airoutlet and outside panels.WARNINGNEVER replace a fuse with a fuse of a wrong ampereratings or other wires when a fuse blows out. Use of wireor copper wire may cause the unit to break down or causea fire.CAUTIONAfter a long use, check the unit stand and fitting fordamage. If damaged, the unit may fall and result in injury.CAUTIONBefore accessing terminal devices, make sure to interruptall power supply.DANGER: RISK OF ELECTROCUTIONTo clean the air conditioner or air filter, be sure to stopoperation and turn all power supplies OFF. Otherwise, anelectrical shock and injury may result.WARNINGBe careful with ladders when working in high places.7.2 Cleaning the air filter and air outlet7.2.1 To clean the air outletWARNINGDo NOT let the indoor unit get wet. Possibleconsequence: Electrical shock or fire.NOTICE▪ Do NOT use gasoline, benzene, thinner polishingpowder or liquid insecticide. Possible consequence:Discoloration and deformation.▪ Do NOT use water or air of 50°C or higher. Possibleconsequence: Discoloration and deformation.Clean with a soft cloth. If it is difficult to remove stains, use water ora neutral detergent.7.2.2 To clean the air filterWhen to clean the air filter:▪ Rule of thumb: Clean every 6 months. If the air in the room isextremely contaminated, increase the cleaning frequency.▪ Depending on the settings, the user interface can display the"Time to clean filter" notification. Clean the air filter when thenotification is displayed.▪ If the dirt becomes impossible to clean, change the air filter(= optional equipment).How to clean the air filter:NOTICEDo NOT use water of 50°C or higher. Possibleconsequence: Discoloration and deformation.1 Remove the air filter. Pull its cloth upward (in case of rearsuction) or backward (in case of bottom suction).rear suction bottom suction