Best posts made by CadetC

@mfs12
Look like we need rc7
After installing 3.4b3 rc6 no longer works.

@phaedrux said in RRF 3.4b3 - bed heater fault:

Can you give us some details about the bed and heater?

Bed is made out of 8 mm aluminum plate with dimensions 340X340
Heating element - 300X300 - 220V, 750W Kenovo connected via SSR

Starting with RRF 3.2 I had all versions installed, including betas - it was only with RRF3.4b3 that this problem occurred

my bed config from config.g

M308 S0 P"temp0" Y"thermistor" T100000 B4138 A"Bed"      ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                                   ; create bed heater output on out0 and map it to sensor 0
M307 H0 B0 S1.00                                     ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                              ; map heated bed to heater 0
M143 H0 S130                                         ; set temperature limit for heater 0 to 130C

@imsother
@Phaedrux
I had a similar problem, but I use PrusaSlicer . Everything came back to normal after adding ;LAYER:[layer_num] to the custom gcode tab under the "before layer change g-code" section in printer setting in PrusaSlicer