My heat bed does not heat up fast enough

[Eddiie]

I am upgrading from RR2 to RR3. Reading through the RR3 overview. Have not made it all the way through yet but my head bed triggers a heater fault because it heats up at ~0.41C /sec when it is expecting 1.71C /sec... It IS working...

Nothing obvious. Continuing to read....

What am I missing?

Some config goodness -

; 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 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 S120                                                ; set temperature limit for heater 0 to 120C

[jay_s_uk]

@eddiie PID tune your bed using M303 H0 S60 and save the results in your config or in config override using M500

[engikeneer]

@eddiie to elaborate, in RRF3 all heaters are the same by default (Bed, nozzle etc) as part of the flexible assignments. So the default PID parameters for all heaters are more like a nozzle heater, and you'll need to tune them

[Eddiie]

@jay_s_uk ahhh thank you.