Using our powerful Radial Material cooler may cause the Heatblock to over-cool and you will get a Thermal Runanway Error message when printing. This is because of incorrect PID tuning.
We recommend you to let the material cooler run at 70-85% instead of 100%, otherwise it may cool too much and the adhesion between the layers will decrease. You can then increase performance to 100% when printing overhangs or when printing small parts at high speeds.
To adjust the extruder values, use Pronterface to enter the following commands:
M106 S204 (set cooler too 80%)
Now you wait until your console displays a message with the determined values like this:
bias: 91 d: 91 min: 206.48 max: 213.59