Error: Heating failed, system stopped! Heater_ID: 0

После ~2 часов печати получаю ошибку:

Unhandled communication errorThe was an unhandled error while talking to the printer. Due to that OctoPrint disconnected. Error: Heating failed, system stopped! Heater_ID: 0

RAMPS 1.4+arduino mega, прошивка Marlin 1.1.0-RC8.

В файле Configuration_adv.h:

#if ENABLED(THERMAL_PROTECTION_HOTENDS)

#define THERMAL_PROTECTION_PERIOD 100 // Seconds

#define THERMAL_PROTECTION_HYSTERESIS 15 // Degrees Celsius

/**

* Whenever an M104 or M109 increases the target temperature the firmware will wait for the

* WATCH_TEMP_PERIOD to expire, and if the temperature hasn't increased by WATCH_TEMP_INCREASE

* degrees, the machine is halted, requiring a hard reset. This test restarts with any M104/M109,

* but only if the current temperature is far enough below the target for a reliable test.

*

* If you get false positives for 'Heating failed' increase WATCH_TEMP_PERIOD and/or decrease WATCH_TEMP_INCREASE

* WATCH_TEMP_INCREASE should not be below 2.

*/

#define WATCH_TEMP_PERIOD 25 // Seconds

#define WATCH_TEMP_INCREASE 6 // Degrees Celsius

#endif

/**

* Thermal Protection parameters for the bed are just as above for hotends.

*/

#if ENABLED(THERMAL_PROTECTION_BED)

#define THERMAL_PROTECTION_BED_PERIOD 100 // Seconds

#define THERMAL_PROTECTION_BED_HYSTERESIS 15 // Degrees Celsius