While testing my electronics I found that the heat bed was reading 892C! And I was getting a max temp error. Even changing the sensor type in the firmware the readings were still high. I bought another thermustor and plugged it directly to the RAMPS board. Reading was fine. When I was going to replace the thermistor on the board, I found that the wires were crossed under the tape! I uncrossed the wires and re-tapped. Readings are now correct.
Please add some quality control checks to the head bed that you pre-wire. It took me hours and another thermistor to fix this issue.
Incorrect temp reading on heat bed.
Re: Incorrect temp reading on heat bed.
We apologize for your spending much time on fixing the issue.
Thank you for your advice and we will do our job better.
Thank you for your advice and we will do our job better.