Heater <name> not heating at expected rate
Background
A heater (typically either extruder or bed) is not able to reach or maintain the target temperature
Reasons
- Often this points to some hardware problems with the heater
- Damaged heating cartridge
- Damaged cables / connectors that are supplying the heater
- Damaged / burned MOSFET on the printer-board
- Target temperatures set too high for the given hardware to reach or maintain in due time
- Air flow of the layer-cooling fans hitting the nozzle and causing a temperature drop
- Too strict settings in the [verify_heater] section
Potential solutions
- Check the heating hardware, especially the cables and connectors. One might even see burn marks on the connectors (high contact resistance leading to local overheating)
- Replace the heating cartridge if found faulty. Often the fault only shows up when hot
- Replace the heating cartridge with a more powerful variant or reduce target temperature
- Replace the main power supply unit by a more powerful one
- Use a silicone sock on the heating block
- Do not simply relax the
[verify_heater]settings until the error is gone. Verify / validate above points first or you might not have an error but other hard to diagnose issues.