{"product_id":"filament-sensor-unit-a2l-for-bambu","title":"Filament Sensor Unit - A2L for Bambu","description":"\u003cp\u003e【Official Original Filament Sensor Unit for Bambu Lab A2L】This is the official Bambu Lab A2L Filament Sensor Unit , It directly replaces a worn or damaged filament sensor board to restore accurate filament detection and printing reliability\u003c\/p\u003e\n\u003cp\u003e【Real-Time Filament Detection \u0026amp; Multi-Material Switching】The filament sensor continuously monitors filament feeding status. When using multiple materials with AMS lite, it recognizes filament input and output to enable seamless multi-material switching. It also detects clogs and instantly reports jams to the printer, helping prevent failed prints.\u003c\/p\u003e\n\u003cp\u003e【Integrated Buffer \u0026amp; Filament Tangle Detection】Integrated with the filament hub, this Hall sensor board works with a spring and magnet slider to detect abnormal feeding resistance. When filament tangles or jams occur on external spools or AMS, the system triggers an alarm and pauses printing – giving you peace of mind during unattended prints.\u003c\/p\u003e\n\u003cp\u003e【When to Replace – Restore Accurate Detection】Replace your A2L filament sensor if you experience: printer cannot detect filament loading in the extruder, false reports of cutting module not installed or filament cutter jammed, false reports of extruder environment temperature too high, damaged sensor cable, or after Bambu Lab technical support recommends replacement.\u003c\/p\u003e\n\u003cp\u003eThe Filament Sensor is used to detect the filament feeding status to help prevent print failures and improve overall printing efficiency. When printing with multiple filaments, the filament sensor can recognize the input and output of filaments and transmit the information to the AMS unit for filament switching. It can also detect filament jamming situations and transmit the information to the printer immediately.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cbr\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e- Filament Hall Sensor Board Assembly *1\u003c\/p\u003e\n\u003cp\u003e- Spring *1\u003c\/p\u003e\n\u003cp\u003e- BT2.6x6 Screw *2\u003c\/p\u003e\n\u003cp\u003e- Cable Harness *1\u003c\/p\u003e\n\u003cp\u003e- 3g Lubricant *1\u003c\/p\u003e\n\u003ch3\u003e Compatibility\u003c\/h3\u003e\n\u003cp\u003eA2L\u003c\/p\u003e\n\u003ch3\u003eFilament Sensor Unit Replacement Guide for the A2L\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/Filament_Sensor_Unit_-_A2L.jpg?v=1782786045\"\u003e\u003c\/p\u003e\n\u003ch3\u003eThe filament sensor kit includes the filament\u003c\/h3\u003e\n\u003cp\u003e sensor board and the connecting cable. Please replace the appropriate parts as needed.\u003c\/p\u003e\n\u003ch3\u003eApplicable Printer Model\u003c\/h3\u003e\n\u003cp\u003eBambu Lab A2L\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cp\u003eThe printer cannot accurately detect whether the extruder is loading filament internally.\u003c\/p\u003e\n\u003cp\u003eThe printer falsely reports that the cutting module is not properly installed.\u003c\/p\u003e\n\u003cp\u003eThe printer falsely reports that the filament cutter is jammed.\u003c\/p\u003e\n\u003cp\u003eThe printer falsely reports that the extruder \u003cbr\u003etemperature is too high.\u003c\/p\u003e\n\u003cp\u003eThe filament sensor cable is damaged.\u003c\/p\u003e\n\u003cp\u003eReplacement recommended after Bambu Lab technical support.\u003c\/p\u003e\n\u003ch3\u003eRequired Tools and Materials\u003c\/h3\u003e\n\u003cp\u003eA2L Filament Sensor\u003c\/p\u003e\n\u003cp\u003eH 2.0 allen key\u003c\/p\u003e\n\u003cp\u003eH 1.5 allen key\u003c\/p\u003e\n\u003cp\u003eTweezers\u003c\/p\u003e\n\u003ch3\u003eSafety Warning\u003cbr\u003e⚠️ IMPORTANT!\u003c\/h3\u003e\n\u003cp\u003eIt's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards.\u003c\/p\u003e\n\u003cp\u003eDuring maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues.\u003c\/p\u003e\n\u003cp\u003eTherefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance.\u003c\/p\u003e\n\u003ch3\u003eRemove the Old Filament Sensor\u003c\/h3\u003e\n\u003ch3\u003eStep 1. Remove the TH board\u003c\/h3\u003e\n\u003ch3\u003eStep 2. Remove the Cutting Module Adapter Board\u003c\/h3\u003e\n\u003cp\u003eUse an H1.5 allen key to remove the two fixing screws and take off the cutting module adapter board.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/20260630112511_1332_22.jpg?v=1782790229\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/20260630112519_1333_22.jpg?v=1782790230\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3. Remove the Filament Hub Assembly\u003c\/h3\u003e\n\u003cp\u003eUse a scraper, tweezers, or similar tools to gently pry open the locking tabs securing the filament hub, then remove the hub and take out the internal spring.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/replace-toolhead-filament-hub\/wt006.webp\" alt=\"wt006.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4. Remove the Filament Hub Base Housing\u003c\/h3\u003e\n\u003cp\u003eUse an H2.0 allen key to remove the two fixing screws, then gently pull the filament hub Base Housing straight up.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"gjtwt008.jpg\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/replace-toolhead-filament-hub\/gjtwt008.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"wtheb001.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/sanliao\/wtheb001.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eNote: Please handle carefully when pulling out the Base Housing to avoid pulling or damaging the connecting cable.\u003c\/p\u003e\n\u003ch3\u003eStep 5. Remove the Filament Sensor Board Connecting Cable\u003c\/h3\u003e\n\u003cp\u003eLift the black locking tab on the filament sensor board upward to easily remove the cable.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"wtheb002.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/sanliao\/wtheb002.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eIf your spare parts already come with the Base Housing and filament sensor board pre-installed, you can skip the subsequent disassembly steps.\u003c\/p\u003e\n\u003ch3\u003eStep 6. Remove the Filament Sensor Board\u003c\/h3\u003e\n\u003cp\u003eUse an H1.5 allen key to remove the two fixing screws and take off the filament sensor board.At this time, you can check whether the square detection magnet inside the filament hub Base Housing rebounds properly.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"gjtwt003.jpg\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/sanliao\/gjtwt003.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"wt007.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/replace-toolhead-filament-hub\/wt007.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eInstall the New Filament Sensor\u003c\/h3\u003e\n\u003ch3\u003eStep 1. Install the Filament Sensor Board\u003c\/h3\u003e\n\u003cp\u003ePlace the new filament sensor board into the locating slot and use an H1.5 allen key to tighten the two fixing screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"gjtwt003.jpg\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/sanliao\/gjtwt003.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 2. Install the Filament Sensor Board Connecting Cable\u003c\/h3\u003e\n\u003cp\u003eInstall the connecting cable as shown in the illustration. Insert the cable accurately into the filament sensor board socket and press down the black locking tab to secure it.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"wtheb003.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/sanliao\/wtheb003.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3. Install the Filament Hub Base Housing\u003c\/h3\u003e\n\u003cp\u003ePass the connecting cable through the toolhead, align the position, place it into the filament hub Base Housing, and use an H2.0 allen key to tighten the two fixing screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/replace-toolhead-filament-hub\/gjtwt008.jpg\" alt=\"gjtwt008.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4. Install the Filament Hub\u003c\/h3\u003e\n\u003cp\u003eInstall the spring onto the filament hub assembly\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/a2l\/replace-toolhead-filament-hub\/gjtwt005.webp\" alt=\"gjtwt005.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003ePlace the filament hub assembly into the base housing, making sure the magnets and locking ring orientation on the assembly match the illustrations exactly.\u003c\/p\u003e","brand":"Bambu Lab","offers":[{"title":"Default Title","offer_id":53652513423673,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/p3d.mx\/es\/products\/filament-sensor-unit-a2l-for-bambu","provider":"P3D","version":"1.0","type":"link"}