7 TroubleshootingOperation manual10FTXP20~35L2V1BR32 split series3P511999-1 – 2017.112 After washing, shake off remaining water and dry the filter in theshade. Do NOT wring out the filter when removing water.6.6 To replace the titanium apatitedeodorizing filter1 Remove the filter from the tabs and prepare a new filter.INFORMATIONDispose of the old filter as non-flammable waste.6.7 To take following items intoaccount before a long idle period1 Set the mode to fan only by pressing button to dry theinside of the unit.2 After operation stops, turn the breaker off.3 Clean the air filters and replace them in their original position.4 Remove the batteries from the user interface.INFORMATIONIt is recommended to have periodical maintenanceperformed by a specialist. For specialist maintenance,contact your dealer. Maintenance costs shall be borne bythe customer.In certain operating conditions the inside of the unit mayget dirty after several seasons of use. This results in poorperformance.7 TroubleshootingIf one of the following malfunctions occur, take the measures shownbelow and contact your dealer.WARNINGStop operation and shut off the power if anythingunusual occurs (burning smells etc.).Leaving the unit running under such circumstances maycause breakage, electric shock or fire. Contact your dealer.The system MUST be repaired by a qualified service person:Malfunction MeasureIf a safety device such as a fuse, abreaker or an earth leakage breakerfrequently actuates or the ON/OFFswitch does NOT properly work.Turn OFF the main powerswitch.Malfunction MeasureIf water leaks from the unit. Stop the operation.The operation switch does NOT workwell.Turn OFF the powersupply.If the user interface display indicates theunit number, the operation lamp flashesand the malfunction code appears.Notify your installer andreport the malfunctioncode.If the system does NOT properly operate except for the abovementioned cases and none of the above mentioned malfunctions isevident, investigate the system according to the followingprocedures.Malfunction MeasureIf the system doesNOT operate at all.▪ Check if there is no power failure. Waituntil power is restored. If a power failureoccurs during operation, the systemautomatically restarts immediately afterpower is restored.▪ Check if no fuse has blown or breaker isactivated. Change the fuse or reset thebreaker if necessary.▪ Check the batteries of the user interface.The system suddenlystops operating.▪ Check if the air inlet or outlet of theoutdoor or indoor unit is NOT blocked byobstacles. Remove any obstacles andmake sure the air can flow freely.▪ The air conditioner may stop operatingafter sudden large voltage fluctuations toprotect the system. It automaticallyresumes operation after about 3 minutes.The system operates,but cooling or heatingis insufficient.▪ Check the airflow rate setting. Refer to"4.3.2 Airflow rate" on page 5.▪ Check the temperature setting. Refer to"4.3.1 To start/stop operation and to setthe temperature" on page 5..▪ Check if the airflow direction setting isappropriate. Refer to "4.3.3 Airflowdirection" on page 6.▪ Check if the air inlet or outlet of outdooror indoor unit is NOT blocked byobstacles. Remove any obstacles andmake sure the air can flow freely.The system operatesbut cooling or heatingis insufficient (air isNOT blown from theunit).▪ The air conditioner may be warming upfor heat operation. Wait for about 1 to 4minutes.▪ The unit may be in defrost operation.The system operates,but cooling or heatingis insufficient (air isblown from the unit).▪ Check if the air filters are clogged. Cleanthe air filters. See "6 Maintenance andservice" on page 8.▪ Check for open doors or windows. Closedoors and windows to prevent wind fromcoming in.▪ Check if the unit operates in Econooperation. Refer to "4.3.6 Econooperation" on page 7.▪ Check if there is any furniture directlyunder or next to the indoor unit. Move thefurniture.An abnormal functionhappens duringoperation.The air conditioner may malfunctionbecause of lightning or radio waves. Turnthe breaker OFF and back ON.