This comprehensive guide serves as your functional manual for programming, wiring, and troubleshooting the STC-600 unit. Technical Specifications Specification 220VAC ±10%, 50/60Hz Temperature Measuring Range -40°C to 50°C Temperature Controlling Range -40°C to 50°C Resolution Accuracy Relay Capacity (Cooling) 8A / 220VAC Relay Capacity (Defrost) 8A / 220VAC Relay Capacity (Fan) 8A / 220VAC Sensor Type NTC Sensor (2-meter cable included) Wiring Diagram and Terminal Connections
Does the job, but expect basic translation issues Rating: ⭐⭐⭐☆☆ (3.5/5) Stc-600 Temperature Controller Manual Pdf
| Code | Meaning | Solution | |------|---------|----------| | --- | Sensor open circuit | Check sensor wiring or replace probe | | HHH | Temperature >120°C or sensor short | Verify sensor, check for short | | LLL | Temperature <-50°C | Sensor disconnected or extremely low temp | This comprehensive guide serves as your functional manual
| Error Code | Meaning | Common Cause & Solution | | :--- | :--- | :--- | | | High Temperature Alarm | The measured temperature is above the high setpoint. Check if the sensor is faulty or the cooling system is failing. | | LLL | Low Temperature Alarm | The measured temperature is below the low setpoint, or the unit has iced up. Check for a faulty sensor or possible ice buildup. | | Flashing "HHH" | Sensor Failure | The controller cannot read the sensor signal. The internal temperature is too high, or the cabinet sensor is faulty. | | Flashing "LLL" | Sensor Failure or Icing | The internal temperature is too low, the unit has iced up, or the cabinet sensor is faulty. | | E1 (on some units) | Cabinet Sensor Failure | The primary temperature sensor inside the cabinet is not working. | | E2 (on some units) | Evaporator Sensor Failure | The sensor on the evaporator coil (used for defrost) has failed. | | | LLL | Low Temperature Alarm |
Without the manual, you might struggle with:
The cooling compressor cuts off when the probe drops to (Target achieved). Error Codes and Troubleshooting Root Cause E1 Sensor Open Circuit Broken or loose wire connection Check connection or replace NTC probe E2 Sensor Short Circuit Damaged internal insulation Replace sensor probe assembly HH High Temperature Alarm Room temperature exceeded F1 + F5 Check refrigeration cycle components LL Low Temperature Alarm Room temperature dropped below F1 - F5 Turn off system manually to inspect If you(e.g., freezer, incubator, beer fermenter)
The controller relies on both the Target Value ( F1 ) and the Hysteresis value ( F2 ) to manage loads.