There is no sense to trigger maxtemp while you are at 110º so:
A ) check your thermistor installation, wires and so on. Are you sure thermistor bed is plugged on the right place?? Maybe you conected hotEnd thermistor wire At the PCB bed sensor... so whenever your hotend is up to 160º, max temp bed is triggered (Sorry... I'm not native english speaker...) hope you could understand me...
B ) Your termistor is not properly configured on marlin or wrong type: Open configuration.h and search for "Thermal Settings" and modify the line:
#define TEMP_SENSOR_BED 1
// 1 is 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
C ) Is the hot hotend on the center of the bed? It could be that hotting hotend up to 220º near the bed thermistor make it lies.
Cheers.
Edited 2 time(s). Last edit at 10/03/2014 04:03PM by Lepes.