hotend fan on only when hotend stop heating
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@phaedrux said in hotend fan on only when hotend stop heating:
@phaedrux said in hotend fan on only when hotend stop heating:
Can you show a diagram of how you have things connected?
Or a photo?
What PCB version of Duet do you have? There should be a number silk screened onto the board.
Which fuse blew?
If something is blowing I think you have a short somewhere and should be very careful about blowing the whole board. Take it all apart and slowly put it back together testing as you go.
yes i take all apart and conect only heater and fan but the same. new fuse blew again and the fan still runs. and why drop the power supply to 22v with step down modul on fans but not on the sbc ?
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Yes but which fuse blew? Does your board have 2 fuses? One for vin and one for the fans?
If the fan fuse blew and the fans are still running then it wasn't actually the fan fuse? Or the clone is really really bad.
Either way, a photo would be helpful to see.
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@phaedrux said in hotend fan on only when hotend stop heating:
Yes but which fuse blew? Does your board have 2 fuses? One for vin and one for the fans?
If the fan fuse blew and the fans are still running then it wasn't actually the fan fuse? Or the clone is really really bad.
Either way, a photo would be helpful to see.
yes the board has two fans like on your picture. it is the 1a fan fuse. at the moment the board is not installed. here are some pictures! the blew fuse is not installed on the picture20210411_122546.jpg
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i replaced the clone to an genuine duet3 mini5+. fan + heater etc run well now. also power supply is stable now
