Hi,
When I try to start my AMS 2 Pro for drying, it gives me this message:
The AMS 2 heater’s current sensor is malfunctioning.
Can anyone help me with this? I don’t know what to do
Welcome to the forum.
Which printer are you using this AMS with? Anything other than the H2D will require an external power supply.
1 Like
I have the X1c with AMS 2 pro I have the external power supply.
I would check to see that the power supply is working correctly.
how to check this
I can’t find any way to check this.
Get in touch with support and supply them with a log file , especially if it doesnt give an error or hms code
1 Like
I have the same problem using AMS2 pro with H2D. After the initial setup (first try) heating was functional. Now I’m getting the described error.
Opened a ticket last week, problem is still not resolved, reaction of technical support is quite slow.
I’m on FW (AMS) 02.00.19.47. Which FW does your unit have?
Additional information: HMS 0700-8000-0001-0001
i have the versio 2.00.19.68
let me know if he finds anything
Earlier today support asked me to open the unit and check some connectors on the main PCB of the AMS (connectors of heater 1 in my case). I have found no problems there.
Now I have opened the unit again, because I thought it could be worth to measure the electrical resistance of the two heating elements.
Left heating element (suspected as faulty): 31,78 Ω
Right heating element (this should be good): 11,2 Ω
This is quite a big difference, additionally in case of the left heater if I apply a small force with my fingers to the heatsink of the heating element the resistance value will fluctuate. Based on my experience this could be a symptom of a faulty heating element. As I saw, the heatsink in question is pressed onto the heater itself during production, maybe this could lead in some cases to a broken part (e.g. too much force).
1 Like
Any updates on this issue? I currently have an ams 2 that has that exact same error And now the heating doesn’t work. Just blows cool air. I have a ticket in support but they always take days to respond. I have a feeling I will have to buy a new heater for $35. This ams 2 is only 35 days old.
After adding above mentioned findings and measurement result to my support ticket, Bambu has immediately sent me a replacement part free of charge (device is under warranty). I have replaced the faulty heating element and since then everything is working fine.
2 Likes
Hey that’s good to hear! Thanks for the update! Still waiting to hear back from support. Probably hear something back on Monday.
1 Like
Hi, I’ve got the very same error and tech support asked me to swap the heater 1 & 2 cables to check where the problem really is. But in the guide photographs’ the cables seem too short for swapping, can you confirm if they are long enough for that??
I’ll check the resistance of both heaters and compare with yours and let know to tech support the outcome.
This post is very very helpful and checking impedances seems like a much easier way to detect where the problem lies.
Thank you for sharing!!!
Angel
1 Like
Wires are too short to make a cross-check if the heaters are in place. You need to dismount/disassemble them first to do suggested tests.
Just as I thought, so to cross-check I have to start the unit in a fully disassembled state, something I’m not so happy with… I’ll try with the ohm-meter first.
Thank you!!!
Support sent me a new heater which I easily installed and it made no difference. I reported back to support with install photos and they haven’t resounded in at least 6 days. I don’t know what else it could be.
I FOUND THE PROBLEM! I updated in your thread. It’s the other heater that is broken. I figured it out by plugging in the good heater that they sent me into the other side and when I did this and plugged everything in, the heat came on with no errors! Of course I cannot fit the left side #1 heater they sent into the right side because it does not fit. So I requested a new #2 right side heater. I don’t know why they even sent me a #1 heater when the sensor mentioned #2.
Actually I just figured something out! Both sides are exactly the same except I believe the fan is mounted upside down! And of course the plastic only fits one side. I am going to try uninstalling the fan and heater from the plastic.
1 Like