I have a K280 printer and I printed out two prints (Very first prints too) when I ran into a decoupling error. I checked to see if there were any volts going through the place where the wire connected to the board and there were (I can double check the amount if it is needed) and checked if the temp sensor was working; it was.
I got a hair dryer and blew hot air on the temp sensor as I told the heater to heat to 200C. So I basically tricked it to believe the heater was heating up, so it continued to heat itself instead of giving me an error (“dec” on the LED screen)… This should indicate that there isn’t anything physically wrong?
I am dumbfounded as to why. I did buy a spare one but I don’t know why it’s giving me this error. I am hoping this is limited to the heater and not the board.
usually that means heating cartridge is loose…
heating element might be glowing, but since it poorly transfers to block it its not reaching temp that printer expects… triggering temp safety.
So buying a replacement should solve the issue then?
One thing I am concerned on is that in the past before I ran the printer, I heated the heating cartridge plenty of times without issue. But since I started printing the heating cartridge failed.
no actual need to buy replacement, except for stock in case of other problems… or if you don’t feel comfortable dealing with small screws.
i had hotend, were heating element was too small for the hole in block, fixed by single screw (provided assembled in a kit)…
it came loose during print H element was glowing, nozzle clogged but printer remained doing it’s thing, because temp didn’t fall below critical for error.
i have it still as a backup, at the time it was fixed with kitchen alu foil… few layers to fill the gap.
in case of thermistors, you can add some thermal paste just be sure it isn’t conductive. i know most aren’t rated for temps used on printers, but it will keep it in place.
then i wrap whole block with ptfe tape, even if no layer cooling is used… to minimise radiating heat on print.
H element was glowing, nozzle clogged but printer remained doing it’s thing, because temp didn’t fall below critical for error.