How to slove the problem of MAX/MIN TEMP error(GT2560)
LCD:ERROR:MAX TEMP OR ERROR:MIN TEMP Above of all,check the wiring of thermistors if you have a single extruder on your printer.The right one should be like this: Recommended solutions：
1.1 First, check the motherboard. If you get 0℃ and 358 ℃ when you make the thermistor open circuit or short, then the board is good. You can do it as follows.
Note: If your printer is Delta G2/G2S series, before checking this please install the firmware for I3X or I3 pro C, cause when you short out the thermistors with the firmware of G2/G2S, it will always show 0 degrees on the LCD, though it is exactly MAX temp error.
Open circuit: Short the board: For example,the T_HE2 is shorted out.As a result,the second extruder will always display 358/0 no matter you make it open circuit or short circuit. 1.2 If the board is OK, please check if somewhere of the wire are connected or not.
For example, the thermistor is shorted out as the picture shows: If so, the current will not go through thermistor, and LCD will display TEMP ERROR. You can refer to the following information:
1.2.1 If it shows "358/0, room temp/0; Err: MAXTEMP". The extruder thermistor is short.
1.2.2 If it shows "358/0, 358/0; Err: MAXTEMP". Both extruder thermistor and hot bed thermistor are short.
1.2.3 If it shows "room temp/0, 358/0; Err: MAXTEMP BED". The hot bed thermistor is short.
1.2.4 If it shows "0/0,room temp/0; Err: MINTEMP". The extruder thermistor is open circuit.
1.2.5 If it shows "0/0, 0/0; Err: MINTEMP". Both extruder thermistor and hot bed thermistor are open circuit.
1.2.6 If it shows "room temp/0, 0/0; Err:MINTEMP BED". The hot bed thermistor is open circuit.
NOTE: Remember to reset the LCD after you do those experiments. And the MAXTEMP shows in the LCD is not always 385, it’s between 358 and the temperature you set in the firmware here:
#define HEATER_0_MAXTEMP 275
#define HEATER_1_MAXTEMP 275
#define HEATER_2_MAXTEMP 275
#define BED_MAXTEMP 150
1.3 If one of your thermistor is working, you can swap it with the TEMP ERROR one, and see if the thermistor is dead or not.
Hope this will help you guys, thanks!