- 3D printers
- 3D printer
13207
Prusa 13207 on a MK4 3D printer: bed MINTEMP error
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
Prusa error 13207 on the MK4 means the bed read below 5 °C, even with the printer idle. It is usually the bed thermistor: check the room, the thermistor under the Kapton tape and the cable test Prusa suggests.
Safety first
Stop and check this first
- Do not disable or bypass the thermal protection or change the firmware to clear the alert: it is what cuts the heat when the temperature does not add up. Do not open the printer's power supply or mains board: anything at mains voltage is for the service team.
- Prusa asks for the printer to be cooled down and switched off before you access any part or electronic board. The nozzle and the bed burn while they are hot.
Safe checks you can perform
- Stable room temperature
- Thermistor under the Kapton tape
- Cable test at 80 °C
Leave these tasks to a qualified professional
- Do not attempt this professional task: Thermistor connection in the electronics box
- Do not attempt this professional task: Bed thermistor replacement
- Do not attempt this professional task: Multimeter measurement
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Thermistor connection in the electronics box
What they doThe technician opens the xBuddy box and electronics box covers and checks that the bed thermistor cable is properly connected and that the power cable has not slipped from its screw.
They must show youthe connectors secured.
In writingwhat was checked.
Bed thermistor replacement
What they doIf the 80 °C cable test shows fluctuations of more than 5 °C, Prusa says the thermistor needs replacing.
They must show youthe video or measurement of the fluctuation.
In writingthe thermistor replaced.
Multimeter measurement
What they doThe technician measures the resistance of the bed cables following the multimeter usage guide Prusa links to.
They must show youthe values measured against Prusa's guide.
In writingthe readings and the part replaced.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Stable room temperature
- Who:
- you.
- How:
- look at where the printer sits: Prusa asks for a stable ambient temperature above 18 °C.
- Result that matters:
- whether the room is cold or draughty.
- If it is cold or draughty:
- move the printer or fix the room before trying again.
- If the room is fine:
- the cause is in the printer.
- Evidence to keep:
- room temperature and time.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
Thermistor under the Kapton tape
- Who:
- you.
- How:
- with the bed cold and the printer off, check whether the bed thermistor is still held firmly under the golden Kapton tape, without touching or lifting the tape.
- Result that matters:
- whether the thermistor is in place.
- If it looks loose or lifted:
- tell support or the technician.
- If it is held firmly:
- the cause is in the cables or the thermistor.
- Evidence to keep:
- photo of the thermistor.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
Cable test at 80 °C
- Who:
- you, without touching the bed.
- How:
- in Settings, Temperature, Heatbed temperature, set it to 80 °C and move the bed cables by hand, not the bed, while watching the temperature on screen.
- Result that matters:
- whether the temperature fluctuates more than 5 °C from the set value.
- If it fluctuates more than 5 °C:
- the thermistor needs replacing.
- If it stays steady:
- check the cable connection in the electronics.
- Evidence to keep:
- video of the screen during the test.
The bed will be at 80 °C: move only the cables, away from the surface, and switch the bed off when you finish.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- 3D printers
- Brand
- Prusa Research
- Product type
- 3D printer
Known code variants
- #13207
- 21207
- 23207
- 26207
- 31207
- Bed mintemp error
- Error mintemp base
- Prusa 13207
What it means
Prusa explains this error appears when the bed temperature drops below 5 °C at any time, and that it can also happen when the printer is idle and not heating. The screen asks you to check the heatbed thermistor wiring for damage. Prusa says it is usually caused by a damaged bed thermistor and suggests a test: heat the bed to 80 °C and move its cables; if the temperature fluctuates by more than 5 °C, the thermistor needs replacing. It is 26207 on the MK4S and 31207 on the CORE One.
Warnings and stop conditions
- Criticaleditorial warning
Do not disable or bypass the thermal protection or change the firmware to clear the alert: it is what cuts the heat when the temperature does not add up. Do not open the printer's power supply or mains board: anything at mains voltage is for the service team.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
- Highsource verified
Prusa asks for the printer to be cooled down and switched off before you access any part or electronic board. The nozzle and the bed burn while they are hot.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
Symptoms and causes
Probable causes · in order
- Damaged bed thermistorCommon
Prusa says this error is usually caused by a damaged bed thermistor, which gives an impossible reading below 5 °C.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
- Thermistor cable badly connectedPossible
If the thermistor cable is not properly connected in the electronics box, the reading drops even with a good thermistor.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
- Very cold roomLess common
Prusa asks for a stable room above 18 °C; a very cold room pushes the reading toward the limit.
Evidence: Prusa Knowledge Base: Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
Virtual technician
Does 13207 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
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