l Please read this operation manual carefully before using the appliance.l Keep this manual in a safe place.AB092FCBHAAB142FCBHAAB182FCBHANo:0010571442ContentsBefore useCautions**************************1-3Diagram***************************4Safety precautions*********************5-7MaintenanceMaintenance ************************ 8Trouble shooting*********************10-12Precautions*************************13Tests and trial operation*******************24Built-in Household Cassette Air ConditionerBSeasonal cessation ********************* 9Instroduction***********************14-16Procedures *************************17Indoor unit installationInstallation of indoor unit*****************18-21Pipe connection ********************** 22Electric wiring ***********************23