Diagnosis
Error code 'err 1' indicates a thermal overload. The motor has overheated and shut down to prevent damage.
How to Fix It
Immediately unplug the blender. Allow it to cool for at least 30 minutes in a well-ventilated area. Before restarting, ensure you are not overfilling the jar. For hot soups, do not exceed the 'max hot' fill line.
If That Didn't Work
The thermal cut-off can be triggered by excessively long blend times on high speed. For tough tasks, use programmed cycles like 'Whole Juice' or 'Smoothie' which have built-in cooling pauses.
Heads Up
Consistently triggering 'err 1' by ignoring cooldown periods can permanently damage the motor windings, which is not covered under warranty.