I am getting the “The front door is open.” message even when the door is shut. If I lightly push the front door at the location of the magnet, the message clears. Once I let the door go the message returns.
I see there are two magnetic switches: one at the top and one at the bottom but there is only one magnet on the door. I’m not sure if it’s supposed to have one or two.
I can get around this by holding the door closed with a piece of blue tape and have a ticket opened with Bambu CS so it’s not the end of the world. I am just wondering if anyone else is seeing this and if so, how did you fix it. It looks like the switches are fixed with no means of adjustment.
(Image showing only one tiny magnet at the top of the door)
Same issue here - also one magnet only on the door. Got my printer yesterday, noticed issue today after updating to latest firmware. Not entirely certain if it existed before the update. Connections to hall sensor are seated firmly. Pushing against the door doesn’t help for me. No ticket opened yet, will do that likely tomorrow.
@KarlSangree Just for reference, I have the laser version and there are two magnets on my door. I don’t know if that is a difference between the laser/non laser versions.
Interesting. Don’t have mine yet. Could possibly be a manufacturing error.
For those with 1 magnet, does it appear that there is a hole or recess in the door where a magnet would go? If not, then there are two versions of that part. It’s not clear if the different versions are with/without laser at birth, but that seems the obvious factor for different parts.
The plain H2D has clear or smoked glass. The Laser units have green glass, which ships as a replacement part in the laser upgrade kit according to the product page. Second magnet could be a safety measure to ensure a full light seal.
Will be interesting to see when mine eventually comes.
They are using a Analog Hall Effect Sensor on the door.
The Hall sensor wiring harness connects to pin 16 on the MC board, and it appears that multiple Hall sensors are using pin 16, as it is part of a 7-pin connector.
You can test the sensor using a DC multimeter and a magnet.
Vcc - 5V most likely
GND - Ground
OUT - Start by testing the signal at the sensor connector; if it functions properly, then move on to testing it at the MC board.
Thank you, I appreciate this information! I will do this in a little while - have a long print running at the moment (and have disabled the sensor in the settings for now).
I just heard from Bambu tech support. The tech said:
“Typically, there should be two magnets. I have requested the replacement door for you at no charge and it should be sent out to you shortly. As soon as the team has updated me with the tracking code, I will update you.”
The green glass laser model is equipped with two magnets, whereas the non-laser version features a single magnet positioned on top. The top Hall sensor detects when the door is open, and you can test its functionality by using a magnet to toggle the message on and off.
You might be dealing with a weak sensor, a damaged magnet, a misaligned door, or another issue that’s preventing it from closing fully and keeping the magnet too far from the top hall sensor.
