Panasonic NR-B53V1 Service Manual

Also see for NR-B53V1: Operating instructions User manual

Contents

Panasonic NR-B53V1 Service Manual Manual pdf 17 page image

175 Technical Descriptions5.1. Temperature control for each compartment5.1.1. FC temperature controlThe compressor is turned on and off and 3-Way Valve Controlled, detecting the FC temperature.Operation: The setting temperature “-25°C ” to “-17°C”, 9 levels changeDetection: FCC, ATC sensor1. When power supply is turned on, FC temperature is displayed on the panel PCB by reading FC setting data of micro-computer memories. The data is written in memory area of microcomputer, 5 seconds after FC setting change. Afterthat, FC temperature is controlled by setting FC temperature of the panel PCB.The FC setting data is memorized, though the power supply of this product is turned off. The setting temperature isfixed, after the time to have set temperature change passed more than 5 seconds.2. The setting temperatureThe temperature, when it set on -21°CThe OFF/ON temperature value corresponding to each ATC temperature is as shown in the next table.3. OFF/ON temperature according to FC temperature settingThe OFF/ON temperature corresponding to each FC temperature setting is as shown in the following tables.*: TFOFF and TFON that exist in the following table are considered the temperature calculated bythe OFF/ON temperature value at -21°C setting.5.1.2. PC temperature controlThe compressor is turned on and off and 3-Way Valve Controlled, detecting the PC temperature.Operation: The setting temperature “1°C” to “7°C”, 7 levels changeDetection: PCC, ATC sensor1. When power supply is turned on, PC temperature is displayed on the panel PCB by reading PC setting data of micro-computer memories.The data is written in memory area of microcomputer, 5 seconds after PC setting change. After that, PC temperatureis controlled by setting PC temperature of the panel PCB. The PC setting data is memorized though the power supplyof this appliance is turned off.ATC correction temperature Turning off temperature(OFF temperature)Turning on temperature(ON temperature)40°C or above -23.4°C -19.4°C11°C to 39°C -23.4°C -19.4°C10°C or below -23.4°C -19.4°CATC correction temperature Turning off temperature(OFF temperature)Turning on temperature(ON temperature)(-17°C) setting TFOFF + 4°C TFON + 4°C(-18°C) setting TFOFF + 4°C × (3 / 4) TFON + 4°C × (3 / 4)(-19°C) setting TFOFF + 4°C × (2 / 4) TFON + 4°C × (2 / 4)(-20°C) setting TFOFF + 4°C × (1 / 4) TFON + 4°C × (1 / 4)(-21°C) setting TFOFF TFON(-22°C) setting TFOFF - 4°C × (1 / 4) TFON - 4°C × (1 / 4)(-23°C) setting TFOFF - 4°C × (2 / 4) TFON - 4°C × (2 / 4)(-24°C) setting TFOFF - 4°C × (3 / 4) TFON - 4°C × (3 / 4)(-25°C) setting TFOFF - 4°C TFON - 4°C