No temperature readings on smart LCD screen on Def

igli

Hello, I am new here and new with repetier host, I am using the latest version of repetier firmware on ramps 1.4 and graphical lcd. But there is a problem with heating the bed and the extruder, on my lcd screen it shows extruder 1 OFF I can't tur nit on. On lcd there is Def instead of temperature for bed and for the extruder. Please look the picture below. If anyone have a solution for this please post it!

With best regards

Repetier

This happens if no thermistors are connected, the thermistors have a short, are defect or are plugged on the wrong pin or configured wrong. Most new users see it because they connect before wiring is complete and in this case it can be ignored.

igli

This is my configuration, I mesuered both thermistor, on the extruder is about 100k ohm and on the bed is about 7ohm. Thermistor on extruder is connected on T0 and the bed thermistor is on T1 connector on ramps. Here is my config:
#define DRIVE_SYSTEM 0
#define XAXIS_STEPS_PER_MM 142.7
#define YAXIS_STEPS_PER_MM 142.7
#define ZAXIS_STEPS_PER_MM 5134
#define EXTRUDER_FAN_COOL_TEMP 50
#define EXT0_X_OFFSET 0
#define EXT0_Y_OFFSET 0
#define EXT0_STEPS_PER_MM 370
#define EXT0_TEMPSENSOR_TYPE 1
#define EXT0_TEMPSENSOR_PIN TEMP_0_PIN
#define EXT0_HEATER_PIN 0
#define EXT0_STEP_PIN ORIG_E0_STEP_PIN
#define EXT0_DIR_PIN ORIG_E0_DIR_PIN
#define EXT0_INVERSE 0
#define EXT0_ENABLE_PIN E0_ENABLE_PIN
#define EXT0_ENABLE_ON 0
#define EXT0_MAX_FEEDRATE 50
#define EXT0_MAX_START_FEEDRATE 20
#define EXT0_MAX_ACCELERATION 5000
#define EXT0_HEAT_MANAGER 1
#define EXT0_WATCHPERIOD 1
#define EXT0_PID_INTEGRAL_DRIVE_MAX 230
#define EXT0_PID_INTEGRAL_DRIVE_MIN 40
#define EXT0_PID_P 7
#define EXT0_PID_I 2
#define EXT0_PID_D 40
#define EXT0_PID_MAX 255
#define EXT0_ADVANCE_K 0
#define EXT0_ADVANCE_L 0
#define EXT0_ADVANCE_BACKLASH_STEPS 0
#define EXT0_WAIT_RETRACT_TEMP 150
#define EXT0_WAIT_RETRACT_UNITS 0
#define EXT0_SELECT_COMMANDS ""
#define EXT0_DESELECT_COMMANDS ""
#define EXT0_EXTRUDER_COOLER_PIN -1
#define EXT0_EXTRUDER_COOLER_SPEED 255
#define RETRACT_DURING_HEATUP true
#define PID_CONTROL_RANGE 20
#define SKIP_M109_IF_WITHIN 2
#define SCALE_PID_TO_MAX 1
#define TEMP_HYSTERESIS 0
#define EXTRUDE_MAXLENGTH 160
#define NUM_TEMPS_USERTHERMISTOR0 0
#define USER_THERMISTORTABLE0 {}
#define NUM_TEMPS_USERTHERMISTOR1 0
#define USER_THERMISTORTABLE1 {}
#define NUM_TEMPS_USERTHERMISTOR2 0
#define USER_THERMISTORTABLE2 {}
#define GENERIC_THERM_VREF 5
#define GENERIC_THERM_NUM_ENTRIES 33
#define HEATER_PWM_SPEED 0

// ############# Heated bed configuration ########################

#define HAVE_HEATED_BED 1
#define HEATED_BED_MAX_TEMP 120
#define SKIP_M190_IF_WITHIN 3
#define HEATED_BED_SENSOR_TYPE 1
#define HEATED_BED_SENSOR_PIN TEMP_1_PIN
#define HEATED_BED_HEATER_PIN HEATER_1_PIN
#define HEATED_BED_SET_INTERVAL 5000
#define HEATED_BED_HEAT_MANAGER 0
#define HEATED_BED_PID_INTEGRAL_DRIVE_MAX 255
#define HEATED_BED_PID_INTEGRAL_DRIVE_MIN 80
#define HEATED_BED_PID_PGAIN 196
#define HEATED_BED_PID_IGAIN 33
#define HEATED_BED_PID_DGAIN 290
#define HEATED_BED_PID_MAX 255
#define MIN_EXTRUDER_TEMP 150
#define MAXTEMP 275
#define MIN_DEFECT_TEMPERATURE -10
#define MAX_DEFECT_TEMPERATURE 290

What am I doing wrong?

igli

It is very interesting if I put heated bed support out of the config the extruder works fine it's shows the correct temp and it is heating up!

Repetier

Yes, because all heaters get marked defect if one has a problem. If you see inside the log you see also a message which one is defect.

You send " on the bed is about 7ohm" so that is the problem. That should also be around 100K at room temperature. That counts as short since it results in very untypical temperatures. Or it is not the thermistor you think you have, but I assume here you have the same as extruder so search the short.

igli

Ok, I'll report tomorrow when i check it. Thanks for the answers!

Regards

igli

I replace the thermistor on motherboard, now heat's up properly. The next problem I've got it that the extruder temp goes to max 215 degrees celcius even if I set it to like 230-240.... Any ideas?

Repetier

See whats your max pwm and max drive pwm value. If these are too low, you can not reach your maximum temperature since they limit your power output to less then 100%.