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Heating problem

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The nozzle/heating bed cannot heat up and the environment temperature shows 0

  1. Please kindly check the temperature sensor whether it is not plug very well or it is broken.

  2. If there is enviromental temperature showing, but it cannot heat up. Please kindly use the multimeter to test the heating rob resistance, it should be 10-11Ω.If it is normal please use the multimeter to test the heaing port whether there is 24V.