What are you using? (e.g., K-type thermocouple, Pt100)
Inspect the sensor wiring for shorts. Verify that sensor type settings match the physical hardware. Faulty sensor or incorrect sensor configuration. xmtg-2000 temperature controller manual pdf
The XMTG-2000 is typically manufactured by Chinese industrial automation companies (e.g., Yuyao Xingji, Taie, or RKC rebrands). The safest way to get the PDF is: What are you using