PID heatbed issue
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I did a pid on my 110v ac 800w heater for my bed. It worked one time. Now when I try a Pid for the bed I get this now "Auto tune cancelled because temperature is not falling"Ive lowered the temp from 90 to 60 with same result. thanks for any help
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How thick is the bed you are heating?
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5mm glass
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Try a higher tuning temperature, if your bed heater can get higher.
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ok will do thanks. not sure what happened but my keenovoo heater smoked and cracked my 5mm bed. not sure why this happened. but I'm ordering a new heater and gonna use .250" aluminum tooling plate for the bed. little more than glass but at least it wont break.
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Did the thermistor fail or come loose? Sounds like something overheated.
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it did overheat while pid tuning twice it faild and got super hot. but still worked. then I ran a print and heard a pop and then printer haulted due to heater fault. now I have it tore apart. gonna order new heater. you could be right that the thermistor came loose. not sure what caused it but it was expensive mistake
