Changing pt100 to standard thermistor
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@Atraedes said in Changing pt100 to standard thermistor:
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 692C.",
That's not a heater fault. It's a warning.
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PID tune, send M500 in console, add M501 to config.g. done.
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awesome thanks, much appreciated
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oh my good lord i am losing my mind...I've done everything, seemed fine, heated up hotend to 200c to do a test cube, and "M501
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 612C.", and then "Error: Heating fault on heater 1, temperature excursion exceeded 15.0°C", and it cools down the hotend. I know the first is a warning which i could live with but it then goes into error! Sorry I know i seem like a noob and keep asking questions but i dont get it lol, cables seem fine and ive rechecked everything, do you think there may be another fault elsewhere or is it likely the cables? -
post a picture of the temperature graph.
also do you have the silicone sock on?
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Yes got a sock on, and thanks for your assistance -
sorry did you want me to rest the hotend and heat again first?
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reset the hotend even
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when the error occured
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it happened when i was heating the hotend to 205c to do a test cube
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I've got it heated to 200c now and for the last 15mins or so and it seems ok, but this is probably the 3rd or so time its had a hotend error since i made the changes earlier today
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ok so its just done it again, temp spiked instantly up to 1600, then 1k, and lower but all within seconds, and now its almost cold...
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can i save the set up files and perhaps default the board? perhaps flash it or start again? or will that not change anything?
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If it spiked to 1600C that suggests either an intermittent short circuit, or a short between the heater terminals and the thermistor wires, or ESD. These same causes would explain the error report "last error: short-circuit in sensor" you had when using the PT100.
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thanks, i guess you're right as i cant find any other fault i can see, so if the thermistor and heater terminals touch at the heater block that would also cause a short?
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@Atraedes said in Changing pt100 to standard thermistor:
thanks, i guess you're right as i cant find any other fault i can see, so if the thermistor and heater terminals touch at the heater block that would also cause a short?
It's not uncommon for heater cartridges to develop shorts between the element and the case, which connects the hot end metalwork to VIN. If you also get a short between the temperature sensor and the hot end metalwork, that will short the sensor to VIN.
If you have a connector in the sensor cable, check that connector. Sometimes a single strand of wire escapes the crimp and touches the other one.
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thanks, i will check that now, i only crimped that ruddy jst connector earlier and now that you mention it that seems the likely cause, many thanks
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must have been the thermistor connector in the board, changed it and steady now for 20mins, doing the first test...
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When did it give that M501 error? Did you send M501?
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i did and it still did it, thanks anyway, the machine has found its way out the window so its all good now, thanks anyway
