Question [Random Double Checked wire]Heater_bed not heating at expected rate

[leeeboo]

Printer Model

Voron 2.4

Extruder Type

Clockwork 2

Cooling Type

Stealthburner

My heat bed temperature sometimes suddenly stops and cools down during the heating process, yet the power I see is at 100% and the SSR is also operating (the operating red light is on). If left alone, it eventually reports an error, but if I manually set the target temperature to 0, then back to 110 degrees, there's a good chance it resumes heating. Moreover, once it reaches 110 degrees, it prints normally and there are no temperature issues during the printing process. Why is this happening?

THANK YOU VERY MUCH!!!

Here is the logs, read the heater_bed temp.... You can see I manually set the target temperature to 0 when it cames unexpect down, then back to 110 degrees in it.

 

[Neil_I]

Don't know if it's related to your issue but are you really running your bed heater at 100% ? I'm sure that the recommended max is 60% (max_power: 0.6 in printer config), I assume to avoid overloading/overheating the SSR

 

[ah2049]

Let's start with the simple things first: have you run a PID tune on your bed heater at that temperature?

 

[leeeboo]

Let's start with the simple things first: have you run a PID tune on your bed heater at that temperature?

yes

 

[leeeboo]

Don't know if it's related to your issue but are you really running your bed heater at 100% ? I'm sure that the recommended max is 60% (max_power: 0.6 in printer config), I assume to avoid overloading/overheating the SSR

may be this is the reason.
I change max power to 0.6, seems solved. but heating slow....