AC controller fault

What happened?

The printer is showing the error "Heated bed is operating outside of specification".

In most situations, this is caused by a hardware failure related to the heatbed. In case of a hardware failure, the error is not expected to be sporadic or solve itself. In case this error occurs and then solves itself without user intervention, it points to a possible firmware-related problem. 

Error name: AC controller fault

Error code: #35338

How to fix it?

In both cases, please let our technical support know about this error. We recommend this in both the sporadic case and the hardware-caused scenarios. We will guide you through the next steps and, if needed, assist with the replacement of the heatbed.