not-heating
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not-heating [2018/04/21 23:04] โ samuelpinches | not-heating [2019/03/24 19:26] โ [1. Check the temperature on the LCD] samuelpinches | ||
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==== 1. Check the temperature on the LCD ==== | ==== 1. Check the temperature on the LCD ==== | ||
- | If the LCD temperature is -15C for either the bed or nozzle, then either the connection going from the sensor to the motherboard is broken, or the sensor itself is broken. Check all the connections are plugged in FIRMLY! Examine the connector plugs also, check that no wires are loose or coming out of the connectors. If the LCD temperature shown is 0C, then there may be a temperature sensor connection problem, or, there may be a communication problem between the LCD and the main motherboard, | + | If the LCD temperature is -15C for either the bed or nozzle, then either the connection going from the sensor to the motherboard is broken, or the sensor itself is broken. Check all the connections are plugged in FIRMLY! Examine the connector plugs also, check that no wires are loose or coming out of the connectors. If the LCD temperature shown is 0C, then there may be a temperature sensor connection problem, or, there may be a communication problem between the LCD and the main motherboard, |
==== 2. Check for error messages while heating via Pronterface ==== | ==== 2. Check for error messages while heating via Pronterface ==== | ||
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If you see an error about " | If you see an error about " | ||
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+ | For more info on the thermal safety systems in the Marlin Firmware, see [[thermal-runaway|this page]]. | ||
==== 3. Check your sensors and heaters are not broken ===== | ==== 3. Check your sensors and heaters are not broken ===== | ||
If you know how to use a multimeter (or you have a kind friend who does), you can measure the resistance of the thermistors (temperature sensor), and they should measure approximately 100K ohms at 25C. From there, you can trace the cables, plugs, and wires until you find the broken connection. You can check the resistance of the heated bed or nozzle heater cartridge as well, the bed should measure around 2 to 3 ohms, and the nozzle should measure around 15 to 20 ohms. Check the resistance at the sensor/ | If you know how to use a multimeter (or you have a kind friend who does), you can measure the resistance of the thermistors (temperature sensor), and they should measure approximately 100K ohms at 25C. From there, you can trace the cables, plugs, and wires until you find the broken connection. You can check the resistance of the heated bed or nozzle heater cartridge as well, the bed should measure around 2 to 3 ohms, and the nozzle should measure around 15 to 20 ohms. Check the resistance at the sensor/ | ||
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+ | A video tutorial on replacing the Hot-End Thermistor can be found [[https:// | ||
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+ | ==== Further Troubleshooting ==== | ||
+ | **If you are still getting faulty temperature readings after checking your thermistor temperature sensors are ok, it may be that your motherboard thermistor sensor port is damaged. There is information on using the spare port [[a5: | ||
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not-heating.txt ยท Last modified: 2020/12/25 02:13 by 127.0.0.1