Crashes when Heated bed is set >room temp.

What is the problem?

Ender 3 S1 with Raspberry Pi 4. Upon startup when setting bed temp the printer waits a second, I hear the power fans etc wind down slightly (due to power draw of bed heating I presume) and then system crashes and restarts printer.

What did you already try to solve it?

replaced bed. replaced board. checked connections at board.

Have you tried running in safe mode?

yes

Did running in safe mode solve the problem?

no

Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!)

Attached.

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

OCTOPRINT V.1.11.5
WINDOWS 11
ENDER 3 S1
RASPBERRY PI 4 (wifi)
octoprint-systeminfo-20260124112513 (1).zip (87.9 KB)

Hello @littleriverjim !

For me it sounds that there is a short circuit with either the wires or the bed heater.
What does happen when you unplug the heater wires of bed from the mainboard?