Printhead Heater is Not heating, just blinking?
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I've had to overcome a few problems over the years, but here I need some swarm knowledge.
I have the problem that the print head on my Duet2 no longer heats up, but only flashes, flickers or whatever you want to call it. That means I only get a jumping signal on both ports and no longer have a constant voltage. Ergo, the head does not heat either. This goes so far that the LEDs in the printer also flash, as well as the SSR.
My first thought was a defective SSR, so I replaced it, but unfortunately that wasn't the solution either. The second approach was to change the port, but that's not it either. Fuses are all good.
Can anyone give me sound advice on where to start?
A Magnum+ with 2x 50W heater is installed. Has been running flawlessly for 1 year now.
I look forward to hearing from you
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@MichaelKallner said in Printhead Heater is Not heating, just blinking?:
Duet2 no longer heats up, but only flashes, flickers or whatever you want to call it.
Do you mean the heater port LEDs on the board?
Please share your config.g, a photo of your wiring, and the commands used for heating.
What voltage is your PSU?
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@Phaedrux
Blinking means that I don't get a constant current at the connections for the print head. neither on e01 nor on e02. if i want to heat, the SSR and the LED on the board and also, interestingly enough, the LED lighting flash at regular intervals. icu can rule out the wiring, which sicu hasn't changed in the last year. my system is on 24 volts, the bed heater on 230 volts. I have already replaced the SSR. my next guess is the board, looking for ideas if it can actually be the board before I swap that out. -
@MichaelKallner this could be caused by a bad VIN connection or a failing PSU. Check that the screws on the VIN terminal block on the Duet are tight and that the VIN cable shows no signs of charring.
