Nozzle Temperature Sensor - Resistance at Room Temperature
 
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SAVAGENYHK
(@savagenyhk)
Active Member
Nozzle Temperature Sensor - Resistance at Room Temperature

This isn't really a call for help. It's just merely a FYI. 

I was observing random fluctuations in my temperature probe, but I only observed one min-temp error. 

This upgrade kit (mk3s+ to Mk4) had less than 50 hours of print time when this occurred. I suspected it was a lousy temperature sensor in the nozzle. During a call with Prusa Tech support, the temperature was set at 200 oC and the temperature sensor randomly increased to 259 oC. Even turning off the temperature, it stayed steady at that temperature. After uploading a video demonstrating the printer wouldn't start a new print while it was waiting for the temperature to drop from 259 oC (plus randomly touching the nozzle to show it was cool to the touch). It didn't take long for Prusa to declare it a bad temperature sensor. 

It was just weird that none of the normal temperature errors on MK3s+ were observed on the MK4. 

Just an FYI, the resistance should be around 100 kΩ at rt (25oC/77oF)

I was getting around 85.1 kΩ at rt

Napsal : 12/09/2023 1:58 am
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