No power from fan headers
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No power from fan headers , fans are set to 100 in web interface , and i have not set them to kick in via temp settings . can anyone help thank you
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Is there a jumper in place between vfan and either vin or 5v pins of the fan block? Can you carefully check if those pins are getting any voltage?
If this is a newer 1.03 or 1.04 board revision there is a fuse for the fans close to the fan connectors. Check if it's blown.
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@richard-f said in No power from fan headers:
No power from fan headers , fans are set to 100 in web interface , and i have not set them to kick in via temp settings . can anyone help thank you
Which Duet is this? Do the fans work when connected to an always-on fan output?
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@phaedrux i got 3.4v from the jumper pins as seen in pic not sure what the 3pin is for . maybe a jumper on the fan and vin on the 3 pin header and use a step down reg from 24v to 12v fan ?
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It looks like your clone board is missing a jumper on the fan voltage block.
There should be a selection jumper connecting the middle VFAN input with either the 5v or VIN pin. This then provides the fans with either 5v or VIN voltage. You can also connect your own voltage supply to the VFAN pin, usually used to provide 12v when using a 24v system.
https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans
https://duet3d.dozuki.com/Wiki/Duet_Wiring_Diagrams -
i thought i was paying for a genuine board . will buy direct from duet next time , thank you for your help
