Indoor Unit: 15/18/24 Class SiUS041111150 Removal Procedure2. Indoor Unit: 15/18/24 Class2.1 Removal of Air Filters / Front PanelProcedure Warning Be sure to wait for 10 minutes or more after turning off all power suppliesbefore disassembling work.Step Procedure PointsWarningDangerous: High voltageA high voltage is applied to allthe electric circuits of thisproduct including thermistors. When the signal receivercatches a signal from theremote controller, the receivingtone sounds and the operationlamp blinks immediately toconfirm the signal reception. When the ON/OFF button iskept pressed for 5 seconds, theforced cooling operation isperformed for about 15 minutes.1. Remove the air filters.1 Open the front panel tothe position where itstops.23Slightly push up thecenter knob of the airfilter and unfasten thehooks.Pull out the air filterdownward and removeit. The air filter is not marked fordifference between the right andleft sides. The air filter can be set easily byinserting it along the guides. Insert the air filter with the"FRONT" mark faced up. Be sure to insert the hooks (at 2lower positions) when mountingthe air filter.(R12786)Operation lampSignal receiverTIMER lampON/OFF button(R12787)Room temperature thermistor(R6701)Front panelAir filter(R6702)