Emergency Operation SiME281501E67 Field Setting4. Emergency Operation4.1 Forced OperationEmergency Operation of Indoor UnitsYou can operate the system manually by changing the setting of the emergency switch (SS1) on the indoorunit’s PCB from “Normal” to “Emergency.” When switched however the equipment cannot regulatetemperature. The table below contains a list by model of actuators for manually operating indoor units in timeof emergency. Method of switching in time of emergencyNote:1. Do not operate from remote controller during emergency operation.2. Operate the switch only when the power supply is turned OFF.Emergency Operation of Outdoor UnitsTurn OFF the power supply and set the emergency switch to ON and “Heat” for heating or “Cool” for cooling.Operation will be started manually when you restart the power. (“Heat” cannot be set for a cooling only airconditioner.)Concerning Emergency OperationIf a safety device should be actuated during emergency operation, all actuators are turned OFF. If you resetafter waiting for 3 minutes, operation will start again. Emergency operation cannot be carried out if the PCBitself is defective.Note:For emergency operation, be sure to set emergency operation for both the indoor and outdoor units. Do notattempt to operate the equipment from the remote controller during emergency operation. Emergencyoperation is computer-controlled, and therefore cannot be carried out if the micro-computer is not operatingproperly.The table below contains a list of actuators for manually operating the equipment in time of emergency.During emergency heating operation, defrosting is carried out for 3 minutes every hour. (four way valve,outdoor unit fan and indoor unit fan are turned OFF.)Model Fan Drain RaisingFCQ, FBQ NormalEmergencyDS1 SETTINGON COOL ON COOLON COOLCOOLorHEATOFF HEAT OFF HEATOFF HEATFactory Setting ForcedCoolingForcedHeatingActuator Cooling HeatingCompressor ON ONFour way valve OFF ONIndoor Unit Fan H Fan Speed H Fan SpeedDrain Pump ON ON
