[Screenshot_97] I DON’T KNOW WHAT TO DO. HELP ME PLEASE. HEATBED KEEPS ON HEATING NON STOP. GOES TO 85 90 100 then goes back to 65 60. few seconds or minutes lates does it again. my prints are trash, afraid of it causing a fire. help me out please

[görsel_2025-12-15_074209128] what am i going to do or need to do. help out

Please see the instructions here: [image] A1 bed regularly overheats. 100°C and more! Troubleshooting [DSC_1856] Even tho I have the heat bed temp set to 65°C, it often completely overshoots - highest temp I saw before cutting power was 105°C. The first layers get so s…

If I were you I would submit a ticket to BL and roll your firmware back to when the printer worked ok

If rolling back the firmware does not help, most likely the thermistor has failed causing erratic heating. There is no way the actual bed temperature can swing drastically in a few seconds. But a bad thermistor will result in readings all over the place. Usually it will cause the printer to go into …

that do i need to do then i did as the A1 bed regularly overheats. 100°C and more! this post said. contacted the bambulab support and waiting for and answer, still scares me tho

Same problem here from 65 to 90 in a couple of seconds then drops slowly and start over again. Cables and sensors seems to be fine. After some testing i think it only happens when I set temperature over 60c. Need to do more testing tomorrow.

living the same when it goes above 61 it just goes to 90. don’t know. waiting for support to answer i gave them the files they wanted.

can you send me the thermistor for the heatbed? i couldn’t find anything anywhere about the thermistor on the heatbed.

A1 heatbed losing its mind. help me

Bambu Lab A Series Troubleshooting

mugglesmuggle December 15, 2025, 7:59am 3

Please see the instructions here: