Just unboxed and put together the SV06 Plus Ace. During its calibration phase, it’s tripped two separate gfci circuits. The first circuit had a light load on it, but nothing drastic. The second circuit I tried was isolated with nothing else on it and still tripped. Anyone have any issues with this printer or any for that matter tripping gfci circuits? Going to run it on a non gfci next, but thought I’d reach out.
If I read correctly the GFI only trips when you put a load on the power supply?
The DC side of the power supply SHOULD be completely isolated from the AC. The DC printer can’t cause a ground fault on the AC feed.
If you by chance have a non-functional 24V printer you could swap the power supply in so you can verify the rest of the printer works. Power supplies for 3d printers are pretty generic. There are a few oddballs that are thicker but the housing size and terminal layout are pretty standard. What is inside varies from really good to pretty awful with fan noise being the first sign of a cheep POS.
Sorry should have been more clear. The printer is tripping the gfci while running the calibration setup. The first time it tripped, it looked like the bed had just started to heat up. There were a few other electronics plugged in on the same circuit and thought maybe it was too much load on that circuit. I moved the printer to a different location to try using a different circuit with nothing else plugged in or being used to eliminate the thought of it being too much on the circuit. I started the calibration setup again and it made it past heating the bed up, but not too much further.
I moved it this morning to a non gfci circuit and it ran ok. Finished calibrating and printed the 14 minute bench without an issue.
Do you have the printer set to the right voltage…the red switch on the back of the power supply..??
EU 230, US 115.
Yep, 115, US. Think I switched it 3 times just to make sure it was seated properly.
I would stop using it until you hear from Sovol, putting in a ticket is the fastest way to receive an answer.
I remember reading somewhere about a user had an old house in Florida & was having a similar issue until he moved his printer into a different room. It was something in that 1 room that was causing him problems. (not the ACE).
Then you might be ok, it’s your choice. It didn’t trip a breaker, so that’s good.
It could be that the GFI is overloaded. The GFI might control more than 1 room.
I have 1 in my bathroom that controls the bathroom on the other side of the house. Also 1 in a bedroom that controls 2 outside outlets. 
Will reach out just in case. As far as the gfi, the first one I plugged into had a few things on it. The second one I tried doesn’t run anything but a few outlets which nothing was plugged in at the time, so in theory, there was zero load going to that gfi other then the printer. Regardless will reach out to Sovol. Thanks.
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2 different GFI both detected current leakage. One of the power transistors that are clamped to the inside of the PS case is probably the route.
Not going to fix itself
Demand a replacement PS
It can’t electrocute you, the metal case is grounded. It could however start a fire. Go ahead and use your printer on the no-GFI plug if you want, just don’t leave the room with it powered on.
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I was afraid of the PS being at fault…One of the reasons I was thinking of the SV07. Already has the Mean Well installed. Sent an email out to Sovol, will see what they have to say. Running some calibrations in the meantime, but definitely not leaving it unattended until its sorted out.
No electrical problems detected.
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I was thinking the same.
I’m not saying the PS isn’t the problem, but it is the 1st time someone has posted about it here.
Just because it isn’t a Mean Well, doesn’t mean it’s the issue…the SV07 could cause the same problem.
If you have a portable heater around the house, try plugging that in the same socket & see if it blows the GFI.
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Did ya’all read the thread?
2 separate and distinct GFI devices tripped at approximately the same point in the calibration runs. These GFI’s are in daily use in the living environment and have no issues with 20 or 40 appliances powered during routine use
That is 99.997% positive proof there is in fact leakage to ground in the printer.
The power supply should isolate the DC printer from the AC input circuit and no shorts or grounding issues on the DC side should be able to create a ground fault on the AC side. Even if the bed heater is shorted to the printer frame the power supply should isolate that from the AC input.
SO 2 tripped GFI = bad power supply.
The fact that my two SV06 (Plus) ACE printers work without problems doesn’t rule out the possibility that other printers of the same type also have this issue. However, I’m currently assuming this is an isolated case rather than a general problem. It’s very likely that this device has a defect in the power supply. Replacing the power supply shouldn’t be a major problem, however. Anyone who can assemble the printer should also be able to replace the power supply. Based on my description of the problem, Sovol should be able to provide a replacement relatively easily. Due to the fan noise, I would consider using a power supply with a regulated fan. There are many options. MeanWell has already been mentioned as an alternative.
Unfortunately @Lion, no I do not have any space heaters to try. Both of these electrical branches however are in the common area on an open house plan and see their fair share of loads via random appliances, computers, other 3D printers, etc…
@Oliver I have no doubt this is an isolated issue but still wanted to get the information out there. There’s only a handful of threads for this model, and it’s a new model, the more information, the better. I can only imagine there will be other random issues that pop up from time to time.
At some point, I’m sure I will upgrade the power supply to a higher quality, but for the time being, I’d like to be able to walk away from the printer and not have to worry about there being a short in the current one. I’ve already reached out to Sovol, but I’m sure I won’t hear back until after the weekend.
I messaged Sovol this morning pointing to this thread.
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Sorry for the bad experience caused. Please give me your order number and e-mail account by message. I contact the technician to solve the problem
Anyone have any suggestions on testing the PSU or any other component on this printer that would cause the ground fault? I ran through the basics with Customer Support, a few visuals and checked the 24v DC voltage. All appeared ok and they said there doesn’t seem to be a problem. I grabbed my old 3D printer this morning and ran a 30 minute test print on these same outlets and it finished as expected, so clearly something with the Sovol machine is causing the gfci to trip.
There are several methods:
- Use a high quality multimeter and measure resistance from each of the “power prongs” to the safety ground. should be >40MOhms. Don’t let your fingers touch the probes or terminals as YOUR resistance is <40MOhms.
- Electrically isolate the PS case from contact with any metal. Disconnect the safety ground at the screw terminal on the power supply and install an AC amp meter inline. Operate the printer on the non-GFI source and measure the leakage current. Warning most multimeters top out at 10 amps. The feed circuit is 15 or 20. If the meter “disconnects” (burns up) the power supply case could become an electrocution hazard. Code requires that a GFI trip at less than 20mA. My experience is that they are much more sensitive than that.
- Electrically isolate the PS case from contact with any metal. Disconnect the safety ground at the screw terminal on the power supply and clip a test lead to the wire. Operate the printer on the GFI protected source and periodically touch the grounded test lead to the PS case. Only tripping when grounded verifies the supply circuit is not overloaded and the only issue is current leaking to ground.
#1 may show a pass at ambient temperatures. Run run the PS on the non-gfi source with the printer heaters set to high temperatures for 15 minutes and measure isolation again
#2 and 3 require you to disconnect the safety ground and create a risk of personal injury. PROCEDE AT YOUR OWN RISK.
@sovol3d should not require you perform any of these tests. In my opinion, your assurance that the machine trips 2 separate known good GFI devices should be sufficient evidence for them to replace the PS or, if they want to do failure analysis at THEIR facility, the entire machine
^ Continued
When you “electrically isolate” the power supply you also remove the safety ground from the printer frame. Best practice would be to temporally ground the printer frame. One method would be to attach wire from the wire removed from the PS terminal AND the printer frame.