Sources of heater faults?
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Have you run a heater tune lately?
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Also check your power supply. When you get a heater fault, look at Vin either on DWC or by running M122.
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@jens55 Not recently, I can do that.
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@deckingman This is the sort of off the side thought I could use, I will look at this next time thanks!
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@deckingman @jens55 An update: I just started a tuning of the bed and the voltage drop was potentially significant - 11.2 V instead of closer to 12V. Original was 12.2V.
This bed is a 170mm round.
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I just installed my old meanwell power supply instead of the knockoff that came with this thing. The drop went down to 11.4 but stablized at 11.5. Normal again was at 12.2V.
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@zzing It sounds like the PSU might be a bit marginal although 11.5V should be OK. Can you crank the voltage up on the Meanwell? It might help. But be sure to run heater tuning again if you do.
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@zzing said in Sources of heater faults?:
my old meanwell power supply
what is the rated power of that supply?
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@Veti 29A
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@deckingman I just adjusted it so that it is around 13V. I will run the heater tuning again.
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Assuming your bed heater isn't drawing excessive power and that you measured power supply voltage right at the power supply and not somewhere down the wire, you have a supply that is about to give out or a clone supply. Note that you can not tell a real MeanWell power supply from a clone unless you know what you are looking for or open it up. May I suggest you plan for a new power supply in the near future? You might see a 0.1 or maybe even 0.2V drop but most certainly not a 1.0 volt drop.
I do not believe that adjusting the output voltage will make any difference if your voltage swings all over the place.
This may not be the only issue but is certainly an issue in itself.
