Before installation, ensure your environment matches the device requirements: 85–264V AC, 50/60Hz Input Types: K, J, S, E, Pt100 (Software selectable) Accuracy: ±0.5% Full Scale Control Modes: PID Control, On/Off Control
This indicates an "Input Over-range" or "Open Circuit." Check your sensor wiring or replace the thermocouple. xmtk-9000 user manual