@dc42 Ok, so today i do not get the heater fault. The only thing that is changes from yesterday is the ambient temp was around 22 yesterday, and today it's 24 because it's cold outside.
I have run with this hotend setup for about a year without problems before 3.2.2.
Hidden away in there is a micro swiss all metal hotend.
Thermistor and heater is the original that came on the CR-10 mini.
I still have the problem, although it only happens once when going from 22c to 210.
Not really sure what to do.
Changing the values like @dc42 suggested, made it better, but i still get the heater fault. Not sure why i didn't get that when i tested the other night.
Could it be an indication of an impending hardware failure?
Thanks 
completely missed that when trying to figure it out.
Thank you David, that seems to work. Did a small print for 10 min and the temperature were stable.
Just noticed this when running M501:
Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 213C
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 636C
Should I do something about this?
I've now tried tuning the old way using "M303 H1 S205" and then I can heat the hotend again without faults.
So my guess is it has something to do with the new algorithm.
When tuned with M303 T0 S205 (new way):
Auto tuning heater 1 completed after 3 idle and 10 tuning cycles in 461 seconds. This heater needs the following M307 command:
M307 H1 R3.033 C217.0:120.4 D5.20 S1.00 V13.2
When tuned with M303 H1 S205 (old way):
Auto tuning heater 1 completed after 3 idle and 5 tuning cycles in 337 seconds. This heater needs the following M307 command:
M307 H1 R2.819 C221.0 D6.17 S1.00 V13.2
After updating to 3.2.2 i get a heater fault when i try to heat my hotend.
I ran a pid tuning, and that finished without problems.
I can get a print to work if i go and reset the fault 4-6 times untill it hits 200c. But it's a pain.
Config: https://pastebin.com/NXs7N60K
Config-overide: https://pastebin.com/a5QqD7u1
M122: https://pastebin.com/a6u2QpSM
The printer started life as a CR-10mini if that's important.
I need help to find out what is going on.
The Q10 value made it go from an angry bee, to a slight clicking noise (Not sure if that is normal, but it is for my printer). thanks a bunch 
I went from release 2.05.1 -> 3.0 -> 3.01-RC5
tbh i did not test the bedheater when on 3.0, only the steppers. My bad.
This should maybe have been put in Beta Firmware category, sorry about that.
Hi,
Last night i updated to 3.01-RC5.
But when my bedheater reaches temp, it starts making this strange buzz like sound comming from the controller board.
Here you can hear the sound, and see the LED pulse https://photos.app.goo.gl/C6y24JAzws6beUjT8
The sound is louder than the vid gives it credit for.
It has never been a problem before. I've heard tine clicks from the board before when heating the hotend, but never the bed.
I have a MOSFET connected to the Duet between the bed and powersupply.
Nothing hardware changed, only firmware.
What could cause this? 
