Temperature issues

So here's the issue; I did a print and everything went great. I go to do another and I set the temperature for 235c for the exturder and the heated bed at 105c, just like the previous print. The temperature for the print head goes to 244c and shuts down, taking the heated bed with it. Every time I try to bring the head to 235c, same thing happens. I tried it with a different computer and got the same results. I'm running an E3D print head on a Robo3D printer. Any ideas?

Cheers,
John

Sounds like you hit at this:

// When temperature exceeds max temp, your heater will be switched off.
// This feature exists to protect your hotend from overheating accidentally, but *NOT* from thermistor short/failure!
#define MAXTEMP 260

From your description you have lowered that value.

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