Notifications
Clear all

Thermal Anomaly  

  RSS
Bob
 Bob
(@bob-9)
Eminent Member
Thermal Anomaly

Recently had a massive meltdown on the heater block/nozzle and had to fit new heater cable and thermistor now keep getting "Thermal Anomaly".

Changed firmware to 13.3.70 from latest  still no good .Tried another Thermistor still not working. Nozzle is heating.

Tried factory reset still no good .short of changing the whole hot end for a quick change don't know what else to try .

Anyone have any suggestions ?

 

 

 

 

 

 

Posted : 07/03/2026 1:59 pm
zukpr
(@zukpr)
Eminent Member
RE: Thermal Anomaly

I originally built my MK3S+ from a kit.  When I first started it up, I got periodic thermal anomaly errors (every 10-ish minutes).  The problem was that the thermistor cable wasn't fully seated in the controller board.  I pushed it the rest of the way in, and the thermal anomaly error went away.  You might try making sure the thermistor cable is fully plugged in.

Posted : 07/03/2026 4:15 pm
Bob
 Bob
(@bob-9)
Eminent Member
Topic starter answered:
RE: Thermal Anomaly

Hi zukpr,

thanks for your reply, its fully pushed in. On self test every thing is fine but doing Pid calibration its gives a error. On close inspection of the Rambo  the socket for the thermistor seems a bit loose so not sure if one of the pins into the board is fractured so I've ordered a new board. Once swapped  i can have a good look with a magnifying glass may be repairable in which case I'll have a spare. Hopefully this will cure the problem.

I'll let you know

Posted : 08/03/2026 12:55 pm
Share: