Traulsen Intela-Traul control (R, A and G series)
Microprocessor control with a relay module behind the display. It uses three sensors: cabinet air (green), evaporator coil (blue) and liquid line (yellow).
What it is: Reach-in refrigerator / freezer control. Alarm words apply to controls from 2010 on. Sn1–Sn3 and cLO / cHI are the alternative forms some versions show.
Traulsen Intela-Traul control (R, A and G series) error codes
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CAL SEr | Low refrigerant charge | Leak or undercharge | Repair the refrigeration system. |
| LO CAb / cLO | Cabinet too cold | Control or sensor problem | Clears once the cabinet is back in range. |
| HI CAb / cHI | Cabinet too warm | Door left open, frozen coil, airflow | Clears once the cabinet is back in range. |
| dor OPn | Door open | Door left open or switch | Close the door. |
| ELE LOS | Power was lost | Power cut | Press Alarm Cancel. |
| CLn FIL | Clean condenser | Dirty condenser coil | Clean the condenser. |
| CoL Snr / Sn2 | Coil sensor open or shorted | Blue sensor | Replace the coil sensor. |
| CAb Snr / Sn1 | Cabinet sensor open or shorted | Green sensor | Replace the cabinet sensor. A reading of -40 means open. |
| dIS Snr | Discharge line sensor open or shorted | Sensor | Replace it. |
| Sn3 | Liquid line sensor open or shorted | Yellow sensor | Replace it. |
| dEF Err | Defrost ended on time, not temperature, for 72 hours | Defrost heater or coil sensor | Troubleshoot the defrost cycle. |
Notes
- Sensor check: about 32 kΩ at 0 °C (32 °F).
- If the liquid line reaches about 71 °C (160 °F) the compressor stops on its high limit.
For licensed technicians only. This equipment can involve mains voltage, high-voltage microwave circuits, gas and refrigerant. Isolate power (and gas) before opening panels, follow the manufacturer's manual and your local licensing rules (for example ARC refrigerant handling and electrical or gas licences). Wrong settings can spoil food or damage equipment. Check every value on the unit in front of you before changing it.
Based on: Traulsen master service manual TR36015 (Intela-Traul section). Always check the manual for your exact model and software version.
ServiceModes is not affiliated with Traulsen or any other manufacturer. Written in our own words from the manufacturer's documentation.