Terminal block (from left to right):
Maintains storage temperature within a set range.
Press to see the value of a code, hold SET and use arrows to change it.
The cooling relay engages when the current sensor temperature is equal to or greater than F0 + F1 , provided that the compressor delay time ( F2 ) has elapsed.
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When an operational failure occurs, the STC-600 flashes specific code combinations alongside an audible buzzer alarm. Error Codes Table
The controller uses a "SET" button and arrow keys to navigate menus. Most operations follow this standard sequence:
Press the SET key for 3 seconds to enter the user-defined parameters.
The front panel consists of a 3-digit LED display, status indicator lights, and four control keys ( Set , Up Arrow , Down Arrow , Rst ). Indicator Status Meanings Cooling device is running.
Defrost output relay (normally open contact). Terminal 5 & 8: Fan output relay (normally open contact).
The is a compact, microcomputer-based thermostat designed for reliable cooling, heating, and defrosting supervision. Commonly used in commercial refrigeration, beverage coolers, and industrial chillers, this device provides precision environmental tracking with an integrated buzzer alert system.
adjusts the temperature differential (the range before the unit kicks in).
: On many STC models, holding the Up and Down arrows simultaneously for several seconds will restore factory defaults. Common Troubleshooting Codes
: A three-digit LED display accompanied by status lights for "Set," "Refrigeration," "Defrost," and "Fan". High Relay Capacity : Many models support up to 30A/220VAC for heavy-duty compressor and defrost systems. Technical Specifications Standard Value plus or minus 1 raised to the composed with power C Power Consumption Ambient Temperature 0 raised to the composed with power C 60 raised to the composed with power C Mounting Size Housing Protection Programming & Setup According to the STC-600 Instructions , basic operations include: Setting the Set Point
: Offset adjustments can be made if the sensor reading differs from a known accurate thermometer.