wrong hotend LCD temp reading
after changing the thermistor and the heater cartridge the LCD temp reading is maxing around 188C when I preheat the hotend to 215C
according to an infrared temperature gun the cartridge gets to about 255C
why is the mismatch and how to fix it?
RE: wrong hotend LCD temp reading
Hi Saz,
is the thermistor a genuine Semitec 100Kohm cartridge thermistor?
does it read the correct temperature at rest? (Room temperature? )
is it securely fitted in the heat block?
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: wrong hotend LCD temp reading
it started when I purchased and replaced the hotend with a new genuine E3D V6 hotend.
the temp max at 188, then contacted E3D excellent support people, and now I m awaiting a replacement.
I contacted Prusa live chat, again top notch support, they guys are sending a replacement as the printer is under warranty.
whilst I m waiting, I tired a 3rd party hotend from Amazon. but the exact same thing is happening, temp reading max at 188
all connections are secure, resistance reading seems normal
I wonder, is something wrong with the board?
Also, would the 16-18C ambient temp have an effect?
thanks
S4
RE: wrong hotend LCD temp reading
@saz
That sounds like the board since you are getting multiple hotends and thermistors with the same reading.
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Chuck H
3D Printer Review Blog
RE: wrong hotend LCD temp reading
yes, I m suspecting the board.
not sure how to prove it?