I was a third of the way through an ABS print at 240C when the temperature dropped to 225C jamming the extruder.

Here is the offending G-Code:

295 G1 X88.045 Y113.696 E74.47561
296 G1 X87.204 Y113.696 E74.51719
297 G1 X86.304 Y112.796 E74.58017
298 G1 X86.304 Y113.637 E74.62175
299 G1 X86.363 Y113.696 E74.62591
300 M104 S225 ; set temperature
301 G1 Z0.412 F7800.000
302 G1 F1800.000 E72.62591
303 G92 E0
304 G1 X92.000 Y114.000 F7800.000
305 G1 X91.000 Y117.000 F7800.000
306 G1 X85.000 Y122.200 F7800.000
307 G1 E2.00000 F1800.000
308 G1 X83.600 Y122.060 E2.04960 F1200
309 G1 X82.240 Y121.650 E2.09968
310 G1 X81.000 Y120.990 E2.14921
311 G1 X79.910 Y120.090 E2.19904
312 G1 X79.010 Y119.000 E2.24888

Line 300 lowers the temperature, WHY?

Thanks for any help or suggestions!

As the command to reduce temperature happens just before changing Z to 0.412, I guess this is the transition from the first to the second layer. Looks like you have set the first layer temperature to 240C and the general extruder temp set to 225C in the slic3r settings.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

This was a third of the way through the print on layer ~17.

But I went back and checked and you are correct first layer 240C other layers 225C.

If it had failed on layer 2, I would have guessed that was the problem but it waited for layer 17 to show up.

Thank you fixed it now on to my next problems.