E0 starts heating when I power up my printer
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Hello I got a Problem with my E0 heater. When I power up the printer the heater almost burn after a few seconds. It should be wired correctly. The only thing I did wrong was the fan connection. I connected them backwards. Can this lead to the heating error, or os this something else? Where can I sart searching?
The Thermistor is showing room temp. btw when its powerd via USB.
Best Regards Tim
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- What board do you have?
- What version of firmware are you using?
- How is your heater connected? (Post photos of the wiring)
- post your config.g
- What hotend are you using?
- What is your power-supply voltage?
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@alankilian At first thanks for youre reply.
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Duet 2 Wifi V1.04
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Firmware 3.3
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Bondtech LGX - with copperhead, the heater is from the stock Sidewinder X1
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Power-supply voltage = 240 V
config: !
; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Sun Mar 06 2022 15:28:51 GMT+0100 (Mitteleuropäische Normalzeit); General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Siderwinder X1- V1" ; set printer name; Drives
M569 P0 S1 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S0 ; physical drive 2 goes backwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.12 Y80.12 Z399.78 E400.00 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E550 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X300 Y300 Z400 S0 ; set axis maxima; Endstops
M574 X1 S1 P"xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin ystop
M574 Z1 S2 ; configure Z-probe endstop for low end on Z; Z-Probe
M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X33 Y-47 Z2.5 ; set Z probe trigger value, offset and trigger height
M557 X15:285 Y15:285 S67.5 ; define mesh grid; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 R1 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H0 T45 ; set fan 1 value. Thermostatic control is turned on; Tools
M563 P0 D0 H1 F0 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C; Custom settings are not defined
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What happens if you remove the SD card and then power on the printer? Does the hotend heater still heat up? Check carefully. If it does, that would indicate that the E0 heater output mosfet has failed in the on position. Wiring a fan backwards may have caused some damage, but I'd be surprised if it caused this, unless there is some other issue as well.
You can try using E1 heater output instead by moving the wiring and altering the config.g
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@phaedrux Thanks for youre reply the E1 heater works fine. I guess I damaged something on the way....
