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Gabrielle SilvaAug 3, 2025
What to do if my Technische Alternative Controller displays incorrect temperature?
- JJoshua RobinsonAug 3, 2025
If the Technische Alternative Controller displays a value like -999 (sensor short-circuit) or 999 (interruption), it might not be a material or terminal issue. Ensure the correct sensor types (KTY or PT1000) are selected in the MEN/SENSOR menu. You can also test the sensor by replacing the suspect part with a known working one at the strip terminal and observing the display.