The hot bed data at the hot end of two tree printers is abnorma

I. Description of the problem:

When the machine is printing, the temperature data of the hot bed and the print head are changed, and forced shutdown is caused. And the hot bed is cold, the temperature is displayed 100+, and the screen displays ERROR1

2. Solution:

Check whether the heat-sensitive wire of the hot bed is normal
Error code err1: The hot bed is thermal sensitive. The hot bed is short-circuited. Check the welding place of the hot bed, tear the thermal insulation foam on the hot bed, and check whether the two wires of the thermistor in the middle are connected.

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