Heatbed temp not matching #17209 (XL)

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The printer displays the message "Temp not matching - Measured temperature is not matching expected value. Check the thermistor is in contact with heatbed. In case of damage, replace it." when the measured temperature is different from the temperature expected for the heatbed.

This can happen if any temperature reading failure on the heatbed causes the printer to read the temperature within a few degrees from the target temperature, but not the target temperature itself. The printer will keep trying to heat the heatbed up while the target temperature is not reached. To prevent overheating the printer generates the error.

The error might indicate some issue with the wiring or the tile.

A visual inspection

Check that the indicated heatbed cable is correctly connected with the modular bed electronics and the heatbed tile, and reseat the connection. 

Check the heatbed tile for physical damage, for example, a scratch on any heatbed tile surface, or a cable in bad status on the bottom of a heatbed tile. 

Swap the cables

Swap the heatbed tile connection indicated on the error with another heatbed tile connector, and check if the indicated heatbed tile number in the error changes, or remains the same after the swap.

If the error changes to another heatbed tile number after the cable swap, then the cable is causing the error.

If the error is still the same as before, with the same error code, and on the same heatbed tile number after the swap, most likely the heatbed tile is causing the error.

Parts replacement guide(s)

In case you find some parts are faulty, please order them using our e-shop, then follow the service guide(s):

How to replace a heatbed tile and a heatbed tile cable (XL)