After doing some repairs and upgrades on my Ultimaker Original, I found my temperature readings to be weird.
The reading is not incorrect, as long as the temperature is above 110°C. When the real temparature is below 110°C, the sensor will always read 110°C, with only subtle changes around 0.1°C.
This will cause the printer to abort heating, because it does not see a change in temparature for the first 30 seconds (when the temperature is below 110°C).
Here you can see a screenshot of Pronterface, showing how the temperature (blue line) starts increasing when my printer already aborted heating (violet line).
I am certain that the reading is incorrect because at the beginning the hotend actually feels cold to touch.
I am also certain that the reading above 110°C is more or less accurate.
- What could this be caused by? What parts should I replace?
- If I should replace the TC2, will a TC1 do too? I can't seem to find any store selling the TC2.
- If I should replace the sensor, what kind of sensor should I search for?
- Or is there a drop-in sensor-chip-combination that I can buy?