{"product_id":"hotend-heating-assembly-h2s-for-bambu-lab","title":"Hotend Heating Assembly - H2S for Bambu Lab","description":"\u003cp\u003eThe Hotend Heating Assembly heats the hotend and uses a clamping mechanism to secure it, enabling quick removal for maintenance or replacement.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003ePlease learn about the installation on Bambu Lab Wiki.\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eHotend Heating Assembly*1\u003c\/p\u003e\n\u003cp\u003eM3-10 Screw*3\u003c\/p\u003e\n\u003cp\u003eThermal Insulation Foam*1\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eH2S and H2S Laser\u003c\/p\u003e\n\u003ch3\u003eReplace H2S Hotend Heating Assembly\u003c\/h3\u003e\n\u003cp\u003eIn this guide, we will explain how to replace the H2S hotend heating assembly.\u003c\/p\u003e\n\u003ch3\u003e¶When to Use\u003c\/h3\u003e\n\u003cp\u003eThis guide is used when there is a problem with the hotend heating assembly.\u003c\/p\u003e\n\u003cp\u003eCommon issues that require replacing the H2S hotend heating assembly include:\u003c\/p\u003e\n\u003cp\u003eThe hotend heating assembly is wrapped in plastic due to printing failures\u003c\/p\u003e\n\u003cp\u003eDamaged heater or thermistor\u003c\/p\u003e\n\u003cp\u003eDamaged hotend metal clips\u003c\/p\u003e\n\u003cp\u003eRecommended by Bambu Lab technical support\u003c\/p\u003e\n\u003ch3\u003eRequired Tools and Materials\u003c\/h3\u003e\n\u003cp\u003eNew hotend heating assembly\u003c\/p\u003e\n\u003cp\u003eH1.5\/H2.0 Allen key\u003c\/p\u003e\n\u003cp\u003eFlat-head tweezers\u003c\/p\u003e\n\u003cp\u003e25 minutes\u003c\/p\u003e\n\u003ch3\u003eScrew List\u003c\/h3\u003e\n\u003cp\u003eScrew A: 3 screws in total (shared with the rear cover) for the back of the part cooling fan and the toolhead rear cover: BT2x6.5\u003c\/p\u003e\n\u003cp\u003eScrew B: 2 screws in total for the left and right sides of the part cooling fan: BT2x5\u003c\/p\u003e\n\u003cp\u003eScrew C: 3 screws in total for the hotend heating assembly: M3*10\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-11.png\" alt=\"image-11.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSafety Warning\u003c\/h3\u003e\n\u003ch3\u003eIMPORTANT!\u003c\/h3\u003e\n\u003cp\u003eAlways turn off the printer's power before performing any maintenance work, including maintenance on the printer's electronic components and toolhead wires. Performing such operations while the printer is powered on may cause a short circuit, resulting in damage to electronic equipment and safety hazards.\u003c\/p\u003e\n\u003cp\u003eDuring maintenance or troubleshooting, you may need to disassemble components such as the hotend, exposing wires and electronic components. If they come into contact with each other or with other metal or electronic components while the printer is still powered on, a short circuit may occur. This will damage the printer's electronic components and cause other problems.\u003c\/p\u003e\n\u003cp\u003eTherefore, be sure to turn off the printer and disconnect the power supply before performing any maintenance to prevent short circuits or damage to the printer's electronic components, ensuring that maintenance work is carried out safely and effectively. If you have any questions about this guide, please click here to submit a ticket, and we will reply promptly and provide assistance.\u003c\/p\u003e\n\u003ch3\u003eRemoving the Hotend Heating Assembly\u003c\/h3\u003e\n\u003ch3\u003eStep 1: Loosen the Part Cooling Fan\u003c\/h3\u003e\n\u003cp\u003eUnscrew the 3 screws of the part cooling fan, among which the 1 screw on the back is shared with the toolhead rear cover.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/2025-12-31T154518.267.jpg?v=1767167174\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eAfter loosening the screws, the fan will hang naturally. Do not pull the fan to avoid damaging the connector!\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-13.png\" alt=\"image-13.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 2: Loosen the Toolhead Rear Cover\u003c\/h3\u003e\n\u003cp\u003eRemove the 2 screws on the top of the toolhead rear cover and open the module interface cover;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_154842_050.png?v=1767167351\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eAfter opening the interface cover, you can insert your fingers and gently push the toolhead rear cover backward from the inner wall.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_155009_241.png?v=1767167431\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3: Disconnect the Connector on the TH Board\u003c\/h3\u003e\n\u003cp\u003eDisconnect the hotend heating assembly plug;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-4.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-4.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eTear off the acetate tape on the part cooling fan plug;\u003c\/p\u003e\n\u003cp\u003ePlease keep the tape as you will need to reattach it during installation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_155320_350.png?v=1767167620\"\u003e\u003c\/p\u003e\n\u003cp\u003ePinch the root of the connector and apply force in the direction perpendicular to the PCB board to disconnect the part cooling fan plug.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-7.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-7.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4: Remove the Hotend\u003c\/h3\u003e\n\u003cp\u003eRefer to this tutorial to remove the hotend.\u003c\/p\u003e\n\u003ch3\u003eStep 5: Remove the Hotend Heating Assembly\u003c\/h3\u003e\n\u003cp\u003eTake out the part cooling fan cable and hotend heating cable from the cable management slot;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/2025-12-31T164546.527.jpg?v=1767170763\"\u003e\u003c\/p\u003e\n\u003cp\u003eRemove the 3 screws of the hotend heating assembly, and take off the hotend heating assembly and the gray heat shield;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_164658_581.png?v=1767170891\"\u003e\u003c\/p\u003e\n\u003ch3\u003eInstalling the Hotend Heating Assembly\u003c\/h3\u003e\n\u003ch3\u003e¶Step 1: Install the New Hotend Heating Assembly\u003c\/h3\u003e\n\u003cp\u003eInstall the heat shield (very important, do not omit it), align with the screw holes and the middle positioning point, and reinstall the hotend heating assembly;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"install_hotend_heatting_assembly.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/install_hotend_heatting_assembly.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eTighten the 3 fixing screws;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-17.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-17.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eClip the new hotend heating assembly cable into the cable management slot. After clipping in the cable, press the area indicated by the arrow as shown in the video.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-18.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-18.png\"\u003e\u003cimg alt=\"insert-heat-cable-v1.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/insert-heat-cable-v1.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eInsert the part cooling fan cable into the cable clip;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_165140_261.png?v=1767171112\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 2: Install the Hotend\u003c\/h3\u003e\n\u003cp\u003eRefer to this tutorial to install the hotend.\u003c\/p\u003e\n\u003ch3\u003eStep 3: Connect the Connector on the TH Board\u003c\/h3\u003e\n\u003cp\u003eConnect the fan cable, with the jack of the plug facing the socket on the TH board (the metal solder points of the plug face the back of the chassis), align and press down the plug;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_165434_027.png?v=1767171292\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eReattach the acetate tape;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-21.png\" alt=\"image-21.png\"\u003e\u003c\/p\u003e\n\u003cp\u003ePre-align the screw holes of the fan, arrange the fan cable on the TH board, pull it upward, and fold the excess cable to avoid it being crushed by the fan housing or toolhead rear cover, which may cause fan malfunction.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/manage_cable.webp?v=1767171482\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_165851_681.png?v=1767171550\" alt=\"\"\u003eAfter arranging the cables, insert the hotend heating assembly plug, and use the hotend heating assembly plug and cable to press the part cooling fan cable.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_170047_466.png?v=1767171665\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eWhen inserting the hotend heating assembly, ensure it is aligned with the holes and not misaligned.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-26.png\" alt=\"image-26.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4: Install the Toolhead Rear Cover\u003c\/h3\u003e\n\u003cp\u003eInstall the toolhead rear cover;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-27.png\" alt=\"image-27.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eAfter installation, check that the part cooling fan cable is in the dedicated notch to avoid being squeezed by the rear cover frame;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2025-12-31_170314_871.png?v=1767171812\" alt=\"\"\u003eLock in the 2 rear cover fixing screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-30.png\" alt=\"image-30.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 5: Install the Part Cooling Fan\u003c\/h3\u003e\n\u003cp\u003eAlign with the screw holes and install the part cooling fan; when clamping the fan, be careful not to press the fan cable.\u003c\/p\u003e\n\u003cp\u003eIf the cable is too long, return to step 1 of the installation guide to fold the excess cable first.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-31.png\" alt=\"image-31.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eLock in 3 screws to secure the part cooling fan.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-32.png\" alt=\"image-32.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-33.png\" alt=\"image-33.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-hotend-heating-assembly\/image-34.png\" alt=\"image-34.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFunction Confirmation\u003c\/h3\u003e\n\u003cp\u003eTo ensure everything is working properly, set the hotend temperature to 100°C. If the\u003c\/p\u003e\n\u003cp\u003e setting is successful, the corresponding temperature will be displayed on the screen.\u003c\/p\u003e\n\u003ch3\u003eEquipment Calibration\u003c\/h3\u003e\n\u003cp\u003eIt is recommended to perform a full calibration of the printer after this operation.\u003c\/p\u003e\n\u003ch3\u003ePotential Issues and Solutions\u003c\/h3\u003e\n\u003cp\u003eIf you encounter problems during the installation of the new hotend heating assembly, please check the following potential issues and solutions:\u003c\/p\u003e\n\u003ch3\u003eHotend Temperature is 0°C\u003c\/h3\u003e\n\u003cp\u003eCheck the hotend heating assembly connector to ensure it is properly inserted.\u003c\/p\u003e\n\u003cp\u003ePlease refer to Step 5 Connect Cables.\u003c\/p\u003e\n\u003cp\u003eThe connector pins must be carefully aligned with the TH board.\u003c\/p\u003e\n\u003cp\u003eIf the problem persists, the thermistor wire may be damaged (white wire).\u003c\/p\u003e\n\u003ch3\u003eHotend Cannot Heat\u003c\/h3\u003e\n\u003cp\u003eCheck the hotend heating assembly connector to ensure it is properly inserted.\u003c\/p\u003e\n\u003cp\u003ePlease refer to Step 5 Connect Cables.\u003c\/p\u003e\n\u003cp\u003eThe connector pins must be carefully aligned with the TH board.\u003c\/p\u003e\n\u003cp\u003eIf the problem persists, the heater wire may be damaged (translucent wire).\u003c\/p\u003e\n\u003ch3\u003eFirst Layer Issues\u003c\/h3\u003e\n\u003cp\u003eEnsure the screws of the hotend heater assembly are tightened and that the heatbed leveling function is enabled before starting printing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bambu Lab","offers":[{"title":"H2S and H2S Laser","offer_id":51646870651193,"sku":"PR00629","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/for_Hotend_Heating_Assembly.png?v=1767174915","url":"https:\/\/p3d.mx\/products\/hotend-heating-assembly-h2s-for-bambu-lab","provider":"P3D","version":"1.0","type":"link"}