@o_lampe
It was a wire. I really didn't think so because it is a relatively new machine and the timing of it, but I tested and replaced the wire with success.

I was getting an error on the hot end heater "temperature excursion exceeded 15.0C error" so I tried to bump the tolerance with M570 T50 but now my hot end temp is showing 2000deg. Anybody see something wrong or have any tips?

I am running 2.03RC3 RRF.

config.g

; Configuration file for Duet WiFi (firmware version 1.20 or newer)
; executed by the firmware on start-up

; --- general preferences ---
M111 S0                                            ; debugging off
G21                                                ; work in millimetres
G90                                                ; send absolute coordinates
M83                                                ; relative extruder moves
M555 P2                                            ; set firmware compatibility to look like Marlin
M572 D0 S0.05

M667 S1                                            ; select CoreXY mode
M208 X5 Y0 Z0 S1                                   ; set axis minima to end of safe travel.
M208 X410 Y408 Z510 S0                             ; set axis maxima to match endstop location.

; ---filament sensing---
M591 D0 P7 C3 L7 R50:200 E15 S1 		   ;M591 D0 P1 C3 S1 ,<--original setting

; Automatic power saving
M911 S21 R22 P"M913 X0 Y0 G91 M83 G1  E-3 F1000"   ; Set voltage thresholds and actions to run on power loss

; --- endstops ---
M574 X2 Y2 S1

; Z-Probe
M574 Z1 S0                               ; Set endstops controlled by probe
M307 H7 A-1 C-1 D-1                      ; Disable heater on PWM channel for BLTouch
M558 P5 X0 Y0 Z1 H10 F300 T6000           ; Set Z probe type to bltouch and the dive height + speeds
G31 P50 X0 Y21 Z3.0                      ; Set Z probe trigger value, offset and trigger height
M557 X10:410 Y21:400 S49                 ; Define mesh grid

; --- z-axis stepper leveling configuration ---
M584 X0 Y1 E3 Z6:5:8:7                             ; four motors, at 5, 6, 7, and 8
;M671 X420:420:-100:-100 Y380:-115:-115:380 S20          ; Z belts at 4 corners
M671 X-100:-100:420:420 Y380:-115:-115:380 S20          ; Z belts at 4 corners

; --- drive map ---
;    _______
;   | 6 | 7 |
;   | ----- |
;   | 5 | 8 |
;    -------
;     front


; Network

M550 P"VIVEDINO"                         ; Set machine name

M552 S1

M587 S"APEfast" P"K8XYs1Y#Vbg@"		 ; S is your Wifi name, P is your Wifi password

M586 P0 S1                               ; Enable HTTP

M586 P1 S0                               ; Disable FTP

M586 P2 S0                               ; Disable Telnet

M575 P1 B115200 S1


; --- drives ---
M569 P0 S1	; X
M569 P1 S1	; Y
;M569 P2 S0	; Z
M569 P3 S1	; E0
;M569 P4 S1	; E1
; -- duex --
M569 P5 S1  ; Z5
M569 P6 S0	; Z6
M569 P7 S1	; Z7
M569 P8 S0	; Z8

M569 P2 R-1
M569 P4 R-1
M569 P9 R-1

M350 X16 Y16 Z16 E16 I1			                          ; microstepping with interpolation (I1)
M92  X80 Y80 Z400 E688		                          	  ; steps per mm - with bt
M566 X2000 Y2000 Z602.65 E250		                 	  ; maximum instantaneous speed changes (mm/min) (jerk)
M203 X20000 Y20000 Z1500 E3200	                	  	  ; maximum speeds (mm/min)
M201 X1500 Y1500 Z500 E3200		                    	  ; accelerations
M906 X1200 Y1200 Z1200 E700 I60		              	  ; motor currents (mA) and motor idle factor in per cent

M84 S60 				                                    ; set idle timeout

; --- firmware retraction ---
M207 S2.5 R0 F6500 T4500 Z0	                  ; [ Snnn positive length to retract, in mm ]
					                          ; [ Rnnn positive or negative additional length to un-retract, in mm ]
					                          ; [ Fnnn retraction feedrate, in mm/min ]
					                          ; [ Tnnn feedrate for un-retraction if different from retraction, mm/min ]
					                          ; [ Znnn additional zlift/hop ]

; --- heaters ---
M305 P0 T100000 B4138 C0 R4700                      ; set thermistor + ADC parameters for heater 0
M307 H3 A-1 C-1 D-1                     		    ; set PID tuned settings for heater 0
M143 H0 S125                                        ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 C0 R4700                      ; set thermistor + ADC parameters for heater 1
M307 H1 A517.3 C213.3 D11.1 V24 B0		    ; set PID tuned settings for heater 1
M143 H1 S280                                        ; set temperature limit for heater 1 to 280C

; --- tools ---
M563 P0 D0 H1                                       ; 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

; --- fans ---
M106 P0 S0 I0 F500 H-1                             ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T50                          ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S0.3 I0 F500 H1 T50                          ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

M572 D0 S.15
;M572 D0 S.4							; Linear Advance
;M592 D0 A0.01 B0.0005					;nonlinear extrusion

; --- Set or report heating process parameters---
M106 P3 I-1
M106 P4 I-1
M106 P5 I-1
M106 P6 I-1
M106 P7 I-1
M106 P8 I-1

; --- RGB leds - White ---
;M106 P3 S255 ; V+
M42 P24 S255 ; R-
M42 P25 S255 ; G-
M42 P26 S255 ; B-
M42 P28 S195 ;

M501
M500
M851

config-override.g

; config-override.g file generated in response to M500
; This is a system-generated file - do not edit
; Heater model parameters
M307 H0 A90.0 C700.0 D10.0 S1.00 V0.0 B1
M307 H1 A404.9 C101.5 D6.1 S1.00 V24.2 B0
M307 H2 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H4 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H5 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H6 A340.0 C140.0 D5.5 S1.00 V0.0 B0
; Z probe parameters
G31 T1 P50 X0.0 Y21.0 Z1.60
G10 L2 P1 X0.00 Y0.00 Z0.00
G10 L2 P2 X0.00 Y0.00 Z0.00
G10 L2 P3 X0.00 Y0.00 Z0.00
G10 L2 P4 X0.00 Y0.00 Z0.00
G10 L2 P5 X0.00 Y0.00 Z0.00
G10 L2 P6 X0.00 Y0.00 Z0.00
G10 L2 P7 X0.00 Y0.00 Z0.00
G10 L2 P8 X0.00 Y0.00 Z0.00
G10 L2 P9 X0.00 Y0.00 Z0.00