The rear panel of the STC-600 features numbered terminal blocks. Standard wiring configurations follow this layout: Power supply input (220VAC). Terminals 3 & 4: NTC temperature sensor probe connection.
: Offset adjustments can be made if the sensor reading differs from a known accurate thermometer.
Power Input: 1 (Neutral) – 2 (Live 110–220V) Sensor: 3 (Sensor+) – 4 (Sensor-) Cooling Relay: 5 (COM) – 6 (NC – to compressor/cooling) Heating Relay: 7 (COM) – 8 (NO – to heater) Stc-600 Temperature Controller Manual Pdf
Solution: Check the sensor connections on terminals 3 and 4. Replace the NTC sensor probe if the wire is cut or the probe is damaged.
The STC-600 is more than just a thermostat. It is a dedicated microcomputer designed for precision refrigeration and defrost management. High Power Capacity The rear panel of the STC-600 features numbered
: The LED display includes specific lights for "Set," "Refrigeration," "Defrost," and "Fan" to show current system status at a glance. Manual Resources
| Error Code | Meaning | Fix (From Manual) | | :--- | :--- | :--- | | | Sensor short circuit | Replace the NTC 10K probe. Check for water damage. | | E2 | Sensor open circuit | Unplug the sensor and plug it back in. Ensure wires aren't broken. | | EE | Internal memory error | Power cycle the unit. If persists, factory reset (Hold RST + Set for 10s). | | HH | Temperature exceeds high alarm | Room is too hot. Check F6 (AH) setting. | | LL | Temperature below low alarm | Room is too cold. Check F7 (AL) setting. | : Offset adjustments can be made if the
Rhino Electronic Controller Support often carries STC-600 variants specifically for commercial beverage coolers. stc-600 instructions