Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
Titus

Temp sensor min temp error

Recommended Posts

Hi all,

From the other threads I've seen on Min temp errors, this is a different one.

I encountered a min temp once when I came in from the cold and wanted to start printing. After it was warmed up to like 10-15 degrees it worked fine again.

However, I got a new temp sensor since the wires of the old one were kinda broken. When I power up my UM1, it shows 3 deg C, and within like a second or two it jumps to room temperature. BUT it gave a min temp error since it started on 3 dec C.

When I heat the nozzle up to like 90 deg C, and power off, power on, it starts on 20 deg C and jumps to 90, WITHOUT giving the min temp error since it never was below the threshold.

So it seems there is some kind of lag in the correct signal coming from the sensor. It's workable, but frustrating to having to power on, heat, power off, power on your printer before you can start printing. Anyone a clue how to fix it?

 

Share this post


Link to post
Share on other sites

So it seems there is some kind of lag in the correct signal coming from the sensor.

 

I can't imagine how this could be true. This is very strange. I think you need a new PCB (printed circuit board) if you really want to fix this.

 

Share this post


Link to post
Share on other sites

...

I encountered a min temp once when I came in from the cold and wanted to start printing. After it was warmed up to like 10-15 degrees it worked fine again.

...

 

Well, there are minimal temperatures defined in the firmware - could this be related to this...? Seems to be another security feature...

From Configure.h:

 


// The minimal temperature defines the temperature below which the heater will not be enabled It is used

// to check that the wiring to the thermistor is not broken.

// Otherwise this would lead to the heater being powered on all the time.

#define HEATER_0_MINTEMP 5

#define HEATER_1_MINTEMP 5

#define HEATER_2_MINTEMP 5

#define BED_MINTEMP 5

If the printer works fine after it is "warmed up" this could be an explanation...

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Our picks

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 0 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!