| Cause | Solution |
|---|---|
| The cooling limit in the temperature menu (COOL) is too high. | Lower the cooling limit gradually by steps of 0.5 °C to accelerate the cooling process. Please be aware that after the settings have been changed, a new calibration is required. |
| The cooling device is defective. | Check the cooling capacity of the device according to the KNAUER user manual. If the cooling device fails the test, please contact our customer support. |
| The thermistor is scratched or broken. | Please contact our customer support for a replacement. |
| The ventilation slots are blocked, impeding optimal cooling. | Please ensure unhindered ventilation by keeping the slots free. |
| The initial sample temperature is too high, causing prolonged cooling. | Please use samples with a temperature ideally not higher than room temperature. |