Xmtd-2201 Manual -

| Error Code | Meaning | Solution | | :--- | :--- | :--- | | HHHH | Sensor input open (Over-range) | Check sensor wiring. Thermocouple broken? | | LLLL | Sensor polarity reversed (Under-range) | Swap thermocouple wires (Terminal 6 & 7) | | Errr | System fault / parameter corruption | Power cycle. If persists, restore factory defaults (see below). | | --- | No sensor detected | Check for loose terminal screw or broken Pt100. |

To ensure high accuracy (typically Class 1.0 or 1.5), the device includes automatic cold-end compensation xmtd-2201 manual