SiME281501E Function DetailsFunction and Control 284.1.3 Draft Avoidance Control 2 (FCQ)When hot start is canceled or when cold air prevention control is finished, if the fan speed is set to “H,” the fanturns at L speed for a certain amount of time, thus avoiding draft while the flap is moving.4.1.4 Airflow Rate Shift ControlTc: High pressure equivalent saturation temperature (°C)The airflow rate of an indoor unit is varied to prevent shutdown due to a rise in the high pressure level.(Airflow rate at heating operation)ON condition Tc 58.8°CReset condition Tc < 50°CNote that the airflow rate is varied for a setting time when the thermostat is ON.4.1.5 Freeze-up Prevention ControlThe thermostat turns OFF under the following temperature conditions to prevent freezing of the indoor unitheat exchanger. The electronic expansion valve is controlled to maintain the indoor unit heat exchanger temperature above0°C. The outdoor unit fan speed is reduced to prevent freeze-up prevention control from activating duringcooling operation under low outdoor air temperature. (For details, see the section on cooling operationunder low outdoor air temperature.)FANFlapHOT start,cold air preventionHLOFF or LLSettingPo0Cancel5 sec.Cancel of hot start or cold airprevention control.Indoor unit heat exchanger temperatureFreeze-up prevention controlReset after 10 continuous minutesThermostat OFF after40 cumulative minutesThermostat OFF after 1 continuous minutefrom 8 minutes after starting7˚C–1˚C–5˚C
