43Troubleshooting A5MSY_(i)Indicator LightsIR Signal ReceiverWhen an infrared remote control operating signal has been transmitted, the signal receiver on the indoor unitwill respond as below to confi rm acceptance of the signal transmission.ON to OFF 1 Long BeepOFF to ONPump down/Cool force on 2 Short BeepOthers 1 Short BeepHeat Pump UnitThe table shows the LED indicator lights for the air conditioner unit under normal operation and fault conditions.The LED indicator lights are located at the side of the air conditioner unit.The heat pump units are equippedwith an “auto” mode sensor whereby it will provide reasonable room temperature by switching automatically toeither “cool” or “heat” mode according to the temperature set by the user.IR ReceiverON/OFFCool / HeatTimerSleepON/OFF switchLED Indicator Lights: Normal Operation and Fault Conditions for Heat Pump Unit(RED)1COOL/HEAT(GREEN/RED)(ORANGE)Normal Operation / Fault IndicationGreen Cool modeRed Heat modeRed Auto mode in Heating operationGreen Auto mode in Cooling operationTime off (when unit is on)Time on (when unit is off)Sleep mode onGreen Fan mode onGreen Dry mode onRed Defrost operationGreen Error indicationON BlinkingModel5WMY 10/15 LR5WMY 10/15/20 JR5CKY 10/15/20 CR5CMY 20ER5CCY 20CR