26CONFIRMATION BEFORE OPERATION TESTAfter finishing the installation of both indoor and outdoor unit, connection of the pipe andwiring , ensure there is no refrigerant leakage, no loose power supply cord or signalcord and no wrong connection of positive and negative pole.Attention: if there is mistake in power supply cord connecting, the compressor will not run.OPERATION TESTSwitch on the power supplyEmergency switch operation: every press of emergency switch, the air conditionerruns as the following order:forced AUTO mode forced COOL mode shut offRemote controller operation: if the indoor unit raise sound like Di, Di when pressing I/Obutton, that indicates the air conditioner is under the operation of remote controller.After that, press every button to test their functions.Press function select button and select fan mode to check if there is air blowing out.Press function select button and select cool mode to check if there is cool air blowing out.Press function select button and select heat mode to check if there is warm air blowing out.Press fan speed button and select high speed mode to check if there is strong windblowing out.Press swing button to check if the deflector runs normally.EXPERIMENTAL DRAIN DEVICEAfter installation, drain device must be checked out carefully.During operation test, be sure to drain out correctly and no water leakage at the joint.Pull apart the cover B of pipe ingoing hole and inject 1000ml water into the drip tray bywater supply pump. While injecting ,do not sprinkle the water on the water supply pump.Be sure to verify that the water should be drained through the drain opening.After checking, remove the cover B of pipe ingoing hole to its original place and do notdrop it. Besides, switch off the main power supply.Insert the rubber drain plug after water is drained out.A. Insert the pump end into 3-5cm.B. Cover B of pipe ingoing holeC. Approximately 1000mlD. WaterE. Rubber drain plugOPERATION TESTEEBBAACCDD