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    Fans don't turn on/work

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    • Asabolundefined
      Asabol
      last edited by

      I also think I had uploaded the wrong file for the config file because I had changed some stuff and I wanted to go back to the way I had it. So if I upload the correct files for the config then also do the things you said to do I think I can get the printer to operational again.

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      • Asabolundefined
        Asabol
        last edited by

        This is the response from the printer for what you asked me to type in.

        Screen Shot 2020-05-03 at 7.21.00 PM.png

        Screen Shot 2020-05-03 at 7.21.51 PM.png

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        • Phaedruxundefined
          Phaedrux Moderator
          last edited by

          Ok, send M552 S1 to re-enable the wifi module.

          What is in your config.g now?

          Z-Bot CoreXY Build | Thingiverse Profile

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          • Asabolundefined
            Asabol
            last edited by

            I had accidentally uploaded the wrong package for the config file then I uploaded the correct one for the printer. Question now that I have most of the things back into working order. Why does my thermostatically controlled fan not turn on when I have the hotend above 45C.

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            • Asabolundefined
              Asabol
              last edited by

              Also since I pushed the correct package for the config, the wifi turns on when I turn the printer on.

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              • Phaedruxundefined
                Phaedrux Moderator @Asabol
                last edited by

                @Asabol said in Fans don't turn on/work:

                Why does my thermostatically controlled fan not turn on when I have the hotend above 45C.

                That will depend on which fan port it's plugged into and what your M106 fan config looks like. If you tell me that I might be able to tell you why it's not turning on. And if the configuration checks out good, there is a chance there is damaged mosfet or fan, but we'll cross that bridge when we get to it.

                Z-Bot CoreXY Build | Thingiverse Profile

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                • Asabolundefined
                  Asabol
                  last edited by

                  This is what M106 says in my config.

                  ; Fans
                  M106 P0 S0.45 I0 F20 H-1                           ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
                  M106 P1 S0 I0 F20 H1 T45                           ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
                  M106 P2 S0 I0 F20 H1:0 T45                         ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on
                  
                  
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                  • Phaedruxundefined
                    Phaedrux Moderator
                    last edited by

                    And which port are you using for the hotend fan?

                    Z-Bot CoreXY Build | Thingiverse Profile

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                    • Asabolundefined
                      Asabol
                      last edited by

                      I have that fan plugged into the first port of the always on which I think is incorrect. Then I also have the electronics case fan plugged into the other always on port and the part cooling fan into port 0 of the PWM fan ports.

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                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        There's your problem. The always on fan ports are always on, so they are not thermostatically controlled.

                        Part cooling fan to port 0 is correct and your config looks correct for that as well.

                        Connect your hotend fan to port 1 and it should be correct as well.

                        For the case fan, if you want them to turn on when you are printing at temp, connect it to port 2.

                        Z-Bot CoreXY Build | Thingiverse Profile

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                        • Asabolundefined
                          Asabol
                          last edited by

                          So I did that and now when it gets above 45C it still doesn't turn on. So what could be the issue then? Also should I add a picture to show how the cables are in the connectors. Meaning that they might be backwards.

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                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            Does the fan work at all when connected to the always on port?

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • Asabolundefined
                              Asabol
                              last edited by

                              No it doesn't

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                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by

                                Do other fans work when connected to that always on port?

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • Asabolundefined
                                  Asabol
                                  last edited by

                                  No any other ones won't turn on when connected to the always on ports.

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                                  • Asabolundefined
                                    Asabol
                                    last edited by

                                    The electronics case one used to but it doesn't anymore.

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                                    • Phaedruxundefined
                                      Phaedrux Moderator
                                      last edited by

                                      Ok, that means that either your fans are all dead, or there is either a blown fan fuse or damaged mosfet(s).

                                      Do any of those fans work with any of the other ports?

                                      Can you post some photos of the fan port area? Close up and well lit.

                                      Z-Bot CoreXY Build | Thingiverse Profile

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                                      • Asabolundefined
                                        Asabol
                                        last edited by

                                        Here is a picture of the fan area. I think I might have the cables to the fans in backwards. IMG-0844.jpg (image url)

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                                        • Phaedruxundefined
                                          Phaedrux Moderator @Asabol
                                          last edited by

                                          @Asabol If the fan cables are red and black the red cable is typically positive and black negative. If they use other colors it's less certain. What kind of printer is this? If it's a creality printer, then the part cooling fan has the yellow (+) and blue (-) wires, and the hot end heatsink fan has unterminated bare red (+) and black (-) wires, and the case fan has a terminated red (+) and black (-) wires.

                                          The fans themselves usually have a + or - where the wires connect to the fans.

                                          Unfortunately, reversing polarity on fans has a tendency to kill them.

                                          Your photo isn't clear enough to see the fan mosfets.

                                          See here for an example image: https://duet3d.dozuki.com/Wiki/Connector_and_spare_part_numbers?revisionid=HEAD#Section_Fan_mosfet

                                          Z-Bot CoreXY Build | Thingiverse Profile

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                                          • Asabolundefined
                                            Asabol
                                            last edited by

                                            I am using a Creality Ender 3.

                                            Here is a better picture for you to see the fan mosfets.
                                            IMG-0845.jpg (image url)

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