| | Meaning | Likely Cause | Solution | |-----------|----------------------------------|--------------------------------------------------------------|--------------------------------------------------------------| | HHH | Input open / over-range | Thermocouple broken, RTD disconnected, or signal too high | Check sensor continuity; replace thermocouple. | | LLL | Input short / under-range | Thermocouple shorted, polarity reversed, or sensor type mismatch | Verify wiring against manual; select correct InP setting. | | Er1 | EEPROM parameter error | Corrupt memory (rare) | Power cycle. If persists, press ◄+▲ for 10s to factory reset. | | Er2 | Auto-tuning timeout | System cannot reach oscillation (e.g., heating too slow) | Increase P band manually; check heater power. | | Out1 LED on but no heat | Output failure | Relay welded or SSR shorted | Measure voltage at output terminals; replace relay/SSR. |
K, J, R, S, B, E, N, T (Thermocouples); Pt100, Cu50 (RTDs). Accuracy: ±0.5% of full scale.
The "Error Message" section of the manual lists common fault codes that help diagnose system problems.
. It allows the device to "learn" the thermal dynamics of your specific system. To use it, simply press and hold the until the auto-tune indicator flashes. The controller will pulse the heater a few times to calculate the optimal Proportional, Integral, and Derivative ( PIDcap P cap I cap D ) values for your setup. 5. Troubleshooting Common Errors
Temperature Controller Wiring with Contactor @TheElectricalGuy
For more in-depth technical specifications and diagrams, you can download the full XTA-7000 Manual from the ManualLib resource.
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If you have your controller in front of you and need help, tell me: