Repair workspace

Hotend Not Heating or Heating Too Slowly

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Verify the heater cartridge, thermistor reading, connectors, power supply, hotend assembly, and fan airflow before changing slicer temperatures.

Hardware & SafetyIntermediate15 min

Progress

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Step 1

Power down and cool the printer before inspecting connectors.

Step 2

Check the heater cartridge and thermistor are secure in the block.

Step 3

Inspect toolhead wiring through its full travel for pinching or intermittent contact.

Step 4

Confirm the installed heater voltage and wattage match the printer.

Step 5

Check the silicone sock and fan duct are correctly fitted.

Step 6

Perform a supervised heat test and observe whether the reading is smooth.

Step 7

Run heater calibration only after the hardware checks pass.

Step 8

Replace damaged parts with manufacturer-compatible components.

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