5114 Servicing Mode14.1. Auto OFF/ON Button1. AUTO OPERATION MODEThe Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used tooperate air conditioner with limited function if remote control is misplaced or malfunction.2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A “beep”sound will occur at the fifth seconds, in order to identify the starting of Test Run operation (Forced cooling operation). Within 5minutes after Forced cooling operation start, the Auto OFF/ON button is pressed for more than 5 seconds. A 2 “beep” soundswill occur at the fifth seconds, in order to identify the starting of Forced heating operation.The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air conditioneroperation.3. REMOTE CONTROL NUMBER SWITCH MODEThe Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standbycondition) and press “AC RESET” button and then press any button at remote control to transmit and store the desiredtransmission code to the EEPROM.There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoorunit will only operate when received signal with same transmission code from remote control. This could prevent signalinterference when there are 2 or more indoor units installed nearby together.To change remote control transmission code, short or open jumpers at the remote control printed circuit boardRemote Control Printed Circuit BoardJumper A (J1) Jumper B (D2) Remote Control No.Short Open A (Default)Open Open BShort Short COpen Short D