RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
It wasn't a waste of money. It actually fixed my problem. I've put 50-60 days of print time on the printer and I have yet to see that error message once since the replacement
The problem is the new "thermal model" does not work well, and is too picky for the real world. Yes, some people have "fixed" it by replacing parts, but there was nothing wrong with your previous parts so you likely wasted your money. All these years we never had a "thermal model" and the world was fine, so there is no sudden need for it now. Its a solution for a problem that doesn't exist.
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Hey there, here were the messages from the live support chat:
"Looking at your second message where you mentioned that the board beeps above 140C and doesn't heat past 160C, it would be an issue with the Einsy board - the MOSFET on it is damaged I'm afraid, not really a hotend issue."
"So aside from replacing the board, there isn't much else the could be done for this as mosfet repair isn't really possible here."
"It is possible to disable thermal model by issuing commands via serial port so you don't get the message (we don't really recommend this, just letting you know that such an option exists), but it won't fix the main problem."
"realistically only a board replacement would resolve this. If you could get your hands on a multimeter you could double-check the voltages on the PSU and on the heater if they are still OK."
I finally tested with the multimeter the heater while the temperature was going up and there was no issue with the voltage until the thermal model cut everything thus the voltage went from 23.3 to 0, end of story. But I don't get how this can is a test to prove there's a faulty/broken mosfet: a mosfet acts to stabilize the current, there was no oscillation till 140 celsius, and then the firmware cut everything so the voltage dropped to 0.
Does anyone have another explanation, and possibly a solution that does not involve changing the board?
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
I don't have an "explanation" and you have likely read what I think of the "thermal model" but I will say a "damaged MOSFET" is a hardware problem. The "thermal model" is Prusa's firmware update to better regulate the hotend temperature, and fixes a "problem" that never existed. In other-words, if its a hardware problem, there is no firmware fix for it, you need to replace the hardware. Period. If deactivating the "thermal model" fixes the problem, then there is no hardware problem. I think you understand that, right? If firmware 3.11.0 "fixes" the problem, then its not a hardware problem. If not, then you DO have a hardware problem.
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
fixes a "problem" that never existed
That‘s not entirely true. Actually it does not fix anything really, it’s designed to detect rarely occurring hardware problems that can cause serious damage to your printer. Unfortunately it is a bit over sensitive in some cases (sometimes due to sloppy calibration, sometimes due to modified hardware, sometimes due to demonic possession).
If it misbehaves you can switch it off or roll back the firmware and be done with it, but if you actually have such a rare hardware issue it’s build to detect you better fix that issue or you will probably end up with a severely damaged printer pretty soon.
If at first you don't succeed, skydiving is not for you.
Find out why this is pinned in the general section!
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Thank you both!
Allen that's my point exactly: if there's a problem (being the mosfet or whatever) it cannot be solved by firmware, I absolutely agree.
The remaining question is how to accurately double check if there's an hardware problem considering that this voltage drop I saw it's firmware caused, and not and hardware failure 😉
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Brief (sad) update: went back to firmware 3.11, no thermal model disclaimer, still couldn't complete the pid calibration, the temperature (read) went until 157 then it stuck there although it was clear the temperature kept rising.. Aborted after 5 min of apparent nothing and tried the preheat for pla @210 celsius, same issue until it showed a preheat error on screen while the nozzle was fuming (never saw it before) so I guess the temperature went quite up but the reading stopped at 159 celsius.. Something is definitely off 🙁
RE:
Yeah, if it still doesn't work, I would change the thermistor, if you haven't already. Then check the wiring carefully. Still no luck, its probably the motherboard. If the MOSFET was bad, why the temp read incorrectly? It can only be thermistor, thermistor wiring, or board, but try the cheapest first.
RE: "Thermal Anomaly" does not appear anymore after going back to 3.11
Hi all,
uh wow. Thank you for this article!
With Revo Hotend and new 3.14 Firmware I permanently got THERMAL ANOMALY.
After going back to 3.11, this does not appear anymore.
Would have been nice if PRUSA would have helped here.
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Unfortunately this forum rarely see's input from Prusa staff.
the Chat option is a more direct access to support
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility.Location Halifax UK
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
@gerhard, looks like you recently got the Revo 6. Where did you find it, please? I wish Prusa support told me about this instead of basically shrugging their shoulders and saying 'I don't know', forcing me to reset entire printer back to factory defaults, which didn't solve anything.
I upgraded my 6 year old MK3 to an S about 4 years ago, and have been printing fine with 3.13.3, until recently I began getting excessive stringing. I kept changing filaments etc. Still much stringing. Then I had an issue printing 4 up and when one broke loose from the bed it jammed the movement eventually and I had about a tennis ball size glob on my nozzle/hotend/extruder. Everyone said replace the hotend. Ordered a hotend from Printed Solid. Based on their identical photos of 2 hotends I chose the cheaper which ended up being the kit. Deceptive advertising (identical photos of the assembled version, only the fine print says kit). Returned it, ordered the assembled version (set me back 2 weeks now).
My THERMAL ANOMALLY error vanished, then got THERMAL RUNAWAY. After 1/2 day with Prusa Chat we found a blown 5A fuse. Replaced both5A fuses, but now I get 'Z AXIS ENFORCED...' WHAT DOES THAT MEAN? Prusa doesn't seem to know!! Seems to me nothing is enforced.
I found wherever the z-axis is, I cannot lower the head using Support/Move Z axis. It will go up from where it is when I power on, but not down!! I power off, hand crank the z-axis down to the bed (or any position). Power on. Move Z-axis up from there, stop, but not back down. Cable connectors are seated firmly.
Prusa Chat gives me a hard time once they realize I replaced my extruder with the Bondteck BMG 3:1 drive. "Oh, you modified our machine, policy is..." A few will help anyway.
Bondtech's response is "Z-AXIS ENFORCED ERROR is almost always PINDA/Z-offset related or mechanical in the Z-screws." They also said Pinda offset is 0.8 to 1.0 mm (thickness of credit card). Did that twice, still error.
Even this forum lacks info... just check your Mosfett. Sounds good advice to me. Would you please mind telling us how? Safely how, what do I look for on the multi-meter etc, etc?
So, I'm still nowhere...
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Also tried the gcode 'fixes' - not fixed.
RE:
Is the Pinda working? Watch the top LED the Pinda and see if it toggles as you move a screw driver under it.
Also, turn the machine on, and manually (via the control panel Move Axis commands) drive the Z-Axis up to the top until it bangs for several seconds (this levels the Z-Axis).
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
The GCode "fixes" that I and others have given just turn off the detection of an abnormality that doesn't exist. If you still get this error, then you are not correctly turning it off. You connect a usb cable to your computer and printer and send the commands to the printer. You only have to do this once.
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Thanks for your response Tim. I have spent close to 3 full days with Prusa Chat. A few days ago we tracked down a blown 5A fuse. I thought it was great troubleshooting! So, I replaced both 5A fuses and my THERMAL ANOMALY ERROR vanished. Saturday took so long I went through someone's shift change. Then we got somewhere. Rodolph read my thread, looked at the pics I had sent to those 'fishing' for a solution but didn't know what to look for. He asked for a video of my placing a screwdriver under the PINDA and see if the Value in the LCD toggles 0 - 1. It did not. So, new PINDA ordered. Troubleshooting quick and easy. I also just tried your suggestion to look at the LED. It did not light up.
Raising the Z-Axis via Move Axis is where the problem begins. Once it reaches the top and goes through it's groans I get the Z-AXIS ENFORCED ERROR and it will not move down. If I don't power down it will repeat about every 20 seconds.
Part of the error messages indicate the distance from the PINDA to the bed has not been calibrated. However,
I did do that, about 3 times. Even Bondtech mentioned 0.8 to 1.0 mm between (credit card thickness). So, with a bad probe the Z-Axis never gets calibrated.
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
Thanks for your reply Allen. I do understand what you were saying, but I do not have the printer close to my desktop, so I have to carry the printer to the computer. I don't like doing that as it should then do another XYZ calibration after it's moved. Among those instructions it said you could also place those commands in the start code of a gcode file. That's what I did. But exactly where was not mentioned. I had a part in the slicer so I sliced it, put those 2 commands in 'Printers/Custom G-code' 4th & 5th line down, just after it tells the printer what firmware, copied the file to a SD card, placed it in the printer and ran 'Print from SD card'. I did not let the print run to completion, Stopped Print and powered off. But trying to run Calibrate XYZ continued to fail, thus I said 'fixes' didn't work. I'll need to wait until my new PINDA arrives and start again. I'm not clear on sending those commands from PuTTY, would you please explain? Something explicit.
RE:
If the Pinda doesn't find the print sheet - it can't if it's broken and the light doesn't toggle - so no surprises there. Since the printer can't find a Z reference when homing, it also can't know it's at the top of the Z range and refuses to move down - which prevents damaging the print sheet.
All expected behavior with a broken Pinda. Fix the Pinda and the Z-axis will (should) also be solved.
Something caused that fuse to blow. If you were heating the nozzle to remove the blob using a wire brush, that might explain it (been there, done that). Other than that, ensure the heater wires at the heater block are clean and well separated (not twisted to where they can touch).
While replacing the Pinda, you'll have the extruder bundle wire wrap uncovered, carefully look over all of the wires from the extruder to the control board. Its unlikely there is any wire damage by the excessive current, but look for anything in the wires that looks out of place: insulation that has a thin spot, a bump, etcetera. These wires do break over time, and usually take some extensive efforts with ohm meters to determine which was has failed.
Hope it is just the Pinda...
RE: "Paused Thermal Anomaly" and "Some problem encountered, Z-leveling enforced" wombo combo
On the sending GCode commands to the printer, you don't need PuTTY or anything like that, but you do need Pronterface. Prusa used to include that back in the MK3 days, but don't seem to anymore, but you can still download it from Pronterface.com Adding the GCode to a file and running SHOULD work, but you can't see the immediate feedback.