How to Fix 3D Printer Errors – Mintemp, Maxtemp & Too Far
There are errors that you can experience with your 3D printer that you’ll want to learn how to fix. I decided to write an article that shows users how they can finally fix some 3D printing errors.
Keep on reading through this article for the details behind fixing these 3D printing error issues.
How to Fix 3D Printer Error Mintemp
The Mintemp error in 3D printers is a design feature within your firmware for safety in regard to temperature. When below a set temperature, the heater will be switched off due to possibly having a broken thermistor wire.
This happens because when the temperature from the thermistor is cold, it assumes that your thermocouple has disconnected, so the print should begin.
If you are using Marlin as your firmware, it’s even possible to create a custom MINTEMP value.
Here are some ways to fix the MINTEMP error in a 3D printer:
- Go to a warmer environment or heat up manually
- Ensure wires are connected properly
- Replace your thermistor
Go to a Warmer Environment or Heat Up Manually
One common reason behind getting the MINTEMP error is from being in a cold environment, especially in winter months. Your 3D printer is designed to have a minimum temperature that it can operate in as a safety feature.
One user was working in his garage where the temperature was really cold, to the point where it was under the minimum temperature set in the firmware for the 3D printer. This led to the MINTEMP error, so he ended up fixing it by putting a heat lamp over the bed.
This also could be fixed by going to warmer environment.
Many users have discovered that it was the weather that was causing the issue rather than other things. Some people thought they had to take their 3D printer apart, but it was this simple reason.
After that, you’ll be able to properly pre-heat your 3D printer the usual way. You may have to turn your 3D printer off and on if you leave it on to heat up a little from the power source.
The video below shows that process to fix the error using this method.
Ensure Wires Are Connected & Screws Tightened
Another way to fix this error is to make sure your thermistor wires are properly seated and connected in your hotend. Sometimes you can get wires that tangle and don’t plug in properly.
One user who was getting the MINTEMP noticed a bit of silver at the plane where the thermistor wires plug into the fitting. He pushed the wire back in and solved the issue.
Another user who was printing with his Ender 3 started getting the error every so often. It would pause the print, then restarting the printer would fix the issue temporarily.
He found that as the hotend was traveling, it would move to a certain point where the connection of the sensor would fail to make contact. He fixed this issue by tightening up a screw that was slightly loose, leading to a better attachment.
You can see the connection in the image below.
Replace Your Thermistor
If none of the above fixes work, your thermistor is probably broken.
Here’s how to test a broken thermistor:
- Put a multimeter on it and have a reading of 100ohms at room temperature (if it’s a 100ohm thermistor)
- Apply heat to the thermistor with a heater, blow-dryer or other heating device
- The resistance should decline steadily in seconds if it works. If not, replace it.
You can also switch your hotend thermistor with your heated bed’s thermistor to see if that stops the error.
One user found out that his thermistor had the wires fail due to getting bent back and forth each time it moved in the X direction. He had to replace the thermistor and give proper strain relief to the wires, resulting in the issue being fixed.
You can go with something like the Creality 3D Printer NTC Thermistor Temp Sensor from Amazon. You can use it for both the bed and hotend, and it has an accuracy of ±1%.
Many users who bought this have had success with it, saying it’s easy to fit and works just as good as the original. It’s always good to have spare thermistors on hand since they are quite thin wires that can break easily.
Check out the video below to learn how to install a thermistor.
CHEP made a video on fixing this error that you can check out.
How to Fix 3D Printer MAXTEMP Error
The most common reason of MAXTEMP Error is that the thermistor is not functioning properly or it has been completely damaged.
Here are some methods to fix the MAXTEMP error:
- Loosening the bolt on the hotend
- Getting a new thermistor
- Ensuring neat wire connections
- Replacing the motherboard
Loosening the Bolt on the Hotend
There is a bolt in the hotend. If it is too tight, you will see MAXTEMP Error. To solve this issue, loosen that bolt. Be careful while loosening the bolt because wires around it are very thin and sensitive.
The screw doesn’t have to be very tight, only until it gets some resistance while tightening it up, so basically finger tight.
Get a New Thermistor
A lot of people who got the MAXTEMP error fixed their issue by simply replacing their thermistor, since their previous one was failing. They can break easily as previously mentioned, so try replacing it if you’ve tried other fixes but still get an error.
Again, you can go with the Creality 3D Printer NTC Thermistor Temp Sensor from Amazon. You can use it for both the bed and hotend, and it has an accuracy of ±1%.
Replace the Motherboard
Another reason for the MAXTEMP Error can be short-circuiting of the motherboard. If there is a problem with your motherboard, you might need to get a new one. A recommended motherboard for 3D Printer is SKR Mini. It is cheap and a suitable alternative.
One user who was getting the MAXTEMP : E1 error had an Ender 3 with the stock firmware on a 4.2.2 board but it was faulty. They ended up replacing the board but the next was also faulty. It required buying a new 4.2.7 board from a different vendor to fix this error.
He then flashes the Ender 3 firmware since it came preloaded with Ender 3 Pro firmware it started working perfectly.
Here’s a video on how to swap out a motherboard.
Another user also fixed this issue by replacing the motherboard. They think it happened due to the thermistor wires melting together and shorting each other out, leading to damage to the motherboard.
How to Fix 3D Printer Err: Too far!
Here are some methods to fix the Too Far Error:
- Keep offsets inside the distance limit
- Power cycling
Keep Offsets Inside the Distance Limit
The firmware has a maximum distance set for the offsets (20mm for the Ender 3). If you try to save the offsets outside this limit, you will get the Err: Too far! message.
So, make sure to save offsets inside the distance limit.
You can adjust your offset either in your 3D printer’s firmware through the control screen, or through your slicer software. One user said the method that worked for him was to do it through the 3D printer’s control screen.
To do this, go to Controls, select bed leveling and then probe Z-ffset. This method solved the problem for the user.
Keep in mind that your Z-offset should be saved. Also make sure that SD card is inserted because EEPROM is saved in that card.
It has been seen that some users who got Too Far Error while printing, tried power cycling and it worked for them. This can be simply turning the power off and on.
You may also want to turn it off at the switch and disconnect the power supply cable, then re-insert the cable and power on the plug, then turn the 3D printer back on.