Fans don't turn on/work
-
Fixed it. I had a bad crimp connection on the positive wire and my cables were backward in the connectors. Sorry for having you go through the run-around but it was very helpful and I am very appreciative.
-
Hey no problem. Glad it's all working out. We're here to help. The best part of this hobby is learning something new.
Post again if you have any other questions.
-
Quick one for you. I'm not sure if you or anyone else has dealt with the stock part cooling fan found on the ender 3. But can someone tell me which one is positive and which one is negative considering it is a yellow and blue wire compared to the normal red and black?
-
You bet, there's an entire guide on the Ender 3 you may like.
In my case, 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.
https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+1:+Wiring/37#s114
-
Great thanks.
-
After last time posting that I had fixed the fans I have had work for a single print. The fans now do not want to turn on which is becoming frustrating because I have tried everything I did the first time and nothing has worked. Is there anyone out there that could help?
-
Also the wifi module wont turn on when the printer is turned on. I am not sure if this is related to another fix I did just do on the printer which was I had to recrimp the wires for the x and y axis stepper motors.
-
So the fans were working but now do not?
What else did you change?
Is there a blue LED lit on the wifi module? Does it blink at power on?
If you connect USB terminal, can you send M552 and report the response?
Also send M122 and report the response. -
@Phaedrux Before the fans stopped working the WiFi module would blink when turned on but now they don’t.
-
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.
-
This is the response from the printer for what you asked me to type in.
-
Ok, send M552 S1 to re-enable the wifi module.
What is in your config.g now?
-
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.
-
Also since I pushed the correct package for the config, the wifi turns on when I turn the printer on.
-
@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.
-
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 -
And which port are you using for the hotend fan?
-
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.
-
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.
-
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.
