5 Maintenance and serviceOperation manual5FBA35~140A2VEBSplit system air conditioners4P456964-1 – 2017.04WARNINGTo prevent electric shocks or fire:▪ Do NOT rinse the unit.▪ Do NOT operate the unit with wet hands.▪ Do NOT place any objects containing water on the unit.CAUTIONAfter a long use, check the unit stand and fitting fordamage. If damaged, the unit may fall and result in injury.CAUTIONDo not touch the heat exchanger fins. These fins are sharpand could result in cutting injuries.NOTICEWhen cleaning the heat exchanger, make sure to removethe switch box and fan motor. Water or detergent mightdeteriorate the insulation of electronic components andresult in burnout of these components.WARNINGBe carefull with ladders when working in high places.5.2 To handle the drain pipe plugNOTICE▪ Do NOT remove the drain pipe plug. Water might leakout.▪ Use the drain outlet only to discharge the water if thedrain pump is not used or before maintenance.▪ Insert and remove the drain plug gently. Excessiveforce may deform the drain socket of the drain pan.1 Pull out the plug.▪ Do NOT wiggle the plug up and down.a2 Push in the plug.▪ Set the plug and push it in using a Phillips screwdriver.aba Drain plugb Phillips screwdriver5.3 Cleaning the air filter, suctiongrille, air outlet and outside panels5.3.1 To clean the air outlet and outside panelsWARNINGDo NOT let the indoor unit get wet. Possibleconsequence: Electric 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.▪ Do NOT scrub firmly when washing the blade withwater. Possible consequence: The surface sealingpeels off.Clean with a soft cloth. If it is difficult to remove stains, use water orneutral detergent.5.3.2 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 theTIME TO CLEAN AIR FILTER notification. Clean the air filterwhen the notification is displayed.▪ If the dirt becomes impossible to clean, change the air filter(= optional equipment).How to clean the air filter:1 Remove the air filters by pulling their cloth upward (in case ofrear suction) or backward (in case of bottom suction).rear suction bottom suction2 Clean the air filter. Use a vacuum cleaner or wash with water. Ifthe air filter is very dirty, use a soft brush and neutral detergent.3 Dry the air filter in the shadow.4 Reattach the air filter. Align the 2 hanger brackets and push the2 clips in their place and pull the cloth if necessary.rear suction bottom suction5 Confirm that 4 hangers are fixed.6 In case of bottom suction, close the air inlet grille.