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Rat Rig Community [Unofficial]•2y ago

rngilligan

Heated Bed Failure

My VC3.1 500 has been running well and had been doing some large prints. Then suddenly, it began shutting down before the print when the heated bed is turned on. I checked all electrical connections and everything wiring wise is fine and the SSR is sending 120 to the heated bed. The printer goes into the shutdown failsafe quick enough that I cant feel a noticeable temperature on the bed, so I can't tell if it is a heater problem or thermistor problem. Any thoughts?

Solution

Replacing the thermal fuse worked! The bed is now heating and got through a benchy without issues. Here's the fuse I ended up putting on it: 157C, 15A. https://amzn.to/3vhviez

10PCS SF152Y SEFUSE Cutoffs Thermal Fuse 157C 157 Degree 15A 250V New

10PCS SF152Y SEFUSE Cutoffs Thermal Fuse 157C 157 Degree 15A 250V new

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