LED8 on Arduino blinking red?

[janpieter 0]

Does anyone know if I should be worried when LED8 on the Arduino board is blinking red when printing?

 

I just happened to notice this and I'm not sure if something is wrong or not. Usually red flashing lights are no good... The printer seems to printing alright though.

Should I be worried, or did it always blink when heating, and I just never noticed before?

 

[IRobertI 521]

Without checking the schematic I'm 99.99% sure that LED is just connected to the mosfet that runs the heater. So, whenever the heater turns on the LED lights up.

 

[Daid 306]

I'm 100% sure that the LED lits up when the heater is on. When the temperature is reached the LED cycles about 8 times per second, which is normal and nothing to worry about.

 

[janpieter 0]

Okay, thanks for the reassurance! I guess I just didn't see the light blinking before