PID does not work

[Haggan90]

@dc42 I did the tuning with the print cooling fan on, but it said something like "it appears the print cooling fan is not cooling down the hotend"

[jay_s_uk]

@Haggan90 best tune as a tool i.e. M303 T0 S240

[Haggan90]

@jay_s_uk I did so

[dc42]

@Haggan90 which firmware version are you using?

[Haggan90]

@Haggan90 3.4.2

[Phaedrux]

What kind of heater is it? Photos?

[Haggan90]

@Phaedrux It's just a Volcano heater, I never had this problem before RR3.

[A Former User]

This post is deleted!

[dc42]

@Haggan90 two suggestions:

1. Upgrade to firmware 3.4.6
2. If that doesn't help, reduce the R parameter in the M307 command. Try a 25% reduction first. If you reduce it too much then the temperature will overshoot the set value.

[Haggan90]

@dc42 Ok thank you, I will try that!