How to Open a Bitmain Antminer Warranty Claim: Step-by-Step Guide

How to Open a Bitmain Antminer Warranty Claim: Step-by-Step Guide

If your Bitmain Antminer has developed a fault — whether it arrived with a hardware issue, stopped hashing after a short time, or is displaying errors you cannot resolve — you have the right to open a warranty claim directly with Bitmain. The process is straightforward once you know where to go and what information to prepare, but it can feel overwhelming if you have never done it before. This guide walks you through every stage of the Bitmain Antminer warranty claim process in plain language, so you can get your issue resolved with as little stress as possible.

Before you begin, make sure you have a few things ready. You will need your original proof of purchase, the miner's serial number, a computer or smartphone with internet access, and ideally a brief record of the fault — when it started, what the miner is or is not doing, and any error messages you have seen. If you purchased your unit through Mineshop.eu's Bitmain Antminer series, your invoice from us will serve as valid proof of purchase for Bitmain's warranty system. Having everything gathered before you start saves time and avoids back-and-forth delays.

What You Need

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• Proof of purchase — your Mineshop.eu order confirmation or invoice (PDF or printed)
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• Miner serial number — found on the label affixed to the side of the unit and also visible in the miner's web dashboard under System Information
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• Fault description — a clear, brief note of what is wrong: error codes shown on the dashboard, hash rate drops, no power, fan failure, etc.
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• Photos or video of the fault — Bitmain often requests visual evidence; a short video of the miner powering on (or failing to) is ideal
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• A computer or smartphone with a modern browser (Chrome or Firefox recommended)
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• A Bitmain account — free to create at bitmain.com
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• Your shipping address — you may need to send the unit to a Bitmain repair centre
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• Original packaging — if return shipping is required, proper packaging protects your claim
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Step-by-Step Guide

Step 1: Confirm the Fault Is Genuine and Repeatable

Before contacting Bitmain, spend five minutes confirming the problem is real and consistent. Power the miner off, wait 30 seconds, then power it back on. Log into the miner's web interface by typing its IP address into your browser. Navigate to Miner Status and check the hash board readings, fan speeds, and temperature. If you see a hash board reported as offline, a temperature reading of 0°C, or a persistent error code such as Chain 0 No PIC or Lost PIC, note it down exactly as displayed. Confirming the fault is repeatable means Bitmain's support team cannot attribute it to a one-off glitch, which strengthens your claim from the outset.

Step 2: Locate Your Serial Number

Your miner's serial number (sometimes called the SN) is the unique identifier Bitmain uses to verify warranty eligibility and look up production records. Find it in two places: physically, on the white label stuck to the side panel of the unit — it begins with a letter prefix followed by a string of numbers — and digitally, inside the miner's web dashboard under System > System Info. Write it down or photograph the label clearly. Without this number, Bitmain cannot process your claim, so do not skip this step.

Step 3: Create or Log In to Your Bitmain Account

Go to bitmain.com and click Sign In in the top-right corner. If you do not already have an account, select Register and complete the quick sign-up using your email address. Bitmain will send a verification email — click the link inside it to activate your account. Once logged in, you will land on your account dashboard. You should see navigation options including After-Sales Service or Support — this is where warranty claims are managed. The interface is available in English; if it defaults to Chinese, look for the language toggle at the top of the page.

Step 4: Navigate to the After-Sales Service Portal

From your Bitmain account dashboard, click After-Sales Service in the main navigation menu. You will be taken to a support portal where you can view existing tickets and open new ones. Click the button labelled Submit a Request or New After-Sales Order — the exact label may vary slightly depending on Bitmain's current interface version. You will now be presented with a form asking for your product details. Select Antminer as the product category, then choose your specific model from the dropdown — for example, if you own the Bitmain Antminer X9 XMR RandomX ASIC Miner, select the X9 from the list.

Step 5: Enter Your Serial Number and Purchase Details

In the warranty claim form, enter the serial number you located in Step 2. Bitmain's system will cross-reference this against their production database to confirm the unit is genuine and check whether it falls within the warranty period. Standard Bitmain Antminer warranty coverage is 180 days from the date of manufacture for most models, though this can vary — check your specific model's documentation on bitmain.com to confirm. Next, upload your proof of purchase. A clear PDF or JPEG of your Mineshop.eu invoice works perfectly here. Make sure the document shows the product name, serial number if listed, purchase date, and seller details.

Step 6: Describe the Fault in Detail

In the fault description field, write a clear and factual account of the problem. Include: when the fault first appeared, what the miner was doing at the time, any error messages displayed in the web dashboard (copy them exactly), hash rate before and after the fault, and whether the issue is constant or intermittent. Avoid vague language like "it doesn't work" — the more specific you are, the faster Bitmain's technical team can diagnose the issue and approve your claim. If you have photos or a short video showing the fault, upload them in the attachment section. Most modern smartphones produce files small enough to upload directly.

Step 7: Submit the Claim and Note Your Ticket Number

Review everything you have entered, then click Submit. Bitmain will generate a support ticket with a unique reference number and send a confirmation email to your registered address. Save this ticket number — you will need it for all future communication about this case. Response times from Bitmain's after-sales team are typically 2–5 business days for initial acknowledgement. If your claim is straightforward and the serial number verifies cleanly, you may receive repair or replacement instructions within that same window.

Step 8: Follow Bitmain's Return or Repair Instructions

Once Bitmain reviews your claim, they will respond via your ticket with one of several outcomes: a remote fix (firmware update or configuration change), a request to send the unit to their repair centre, or a direct replacement authorisation. If you are asked to ship the unit, pack it carefully in its original box with all foam inserts. Bitmain will provide a return merchandise authorisation (RMA) number — write this clearly on the outside of the package. Keep your shipping tracking number and share it with Bitmain by updating your ticket. Do not ship anything before receiving written approval and an RMA number, as unauthorised returns may be refused.

Common Issues and Fixes

Serial Number Not Recognised

If Bitmain's system returns an error saying the serial number cannot be found, double-check you have read the label correctly — the digit 0 and the letter O are easy to confuse. If the number still fails, contact Bitmain support directly via the ticket system and attach a clear photo of the physical label. Units purchased through authorised resellers like Mineshop.eu are genuine, and Bitmain can manually verify the unit if the automated lookup fails.

Warranty Period Shows as Expired

Bitmain calculates warranty from the manufacture date, not the purchase date. If the system shows your warranty as expired but you only recently purchased the unit, attach your Mineshop.eu invoice clearly showing the purchase date and escalate within the ticket. In many cases, Bitmain will honour the remaining coverage period when presented with a recent valid purchase receipt from an authorised reseller.

Cannot Upload Proof of Purchase

If the file upload fails, check that your document is under 10MB and is in PDF, JPG, or PNG format. If your invoice is a multi-page PDF that exceeds the size limit, try compressing it using a free online tool, or convert the relevant page to a JPEG image before uploading.

No Response After 5 Business Days

Log back into your Bitmain account, open your ticket, and add a follow-up message confirming all details are complete and asking for a status update. You can also reach Bitmain support via the live chat widget on their website during business hours. Simultaneously, contact Mineshop.eu support — as an authorised reseller, we can liaise with Bitmain on your behalf if communication has stalled.

Bitmain Requests a Diagnosis Fee

In some cases where warranty eligibility is unclear, Bitmain may request a small diagnosis fee before inspection. This is standard practice for out-of-warranty units or where physical damage is suspected. If you believe your unit failed under normal operating conditions within the warranty period, clearly state this in your ticket response and provide any supporting evidence such as operating temperature logs or pool dashboard records showing normal hash rate up until the failure.

Frequently Asked Questions

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How long is the standard Bitmain Antminer warranty?

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Most Bitmain Antminer models carry a 180-day warranty calculated from the manufacture date. Some newer or higher-end models may carry extended terms — always check the warranty card included with your unit or the product page on bitmain.com for the exact terms applicable to your model.

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Can I open a warranty claim if I bought my Antminer from Mineshop.eu rather than directly from Bitmain?

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Yes. Bitmain honours warranty claims for units purchased through authorised resellers. Your Mineshop.eu invoice is accepted as valid proof of purchase. If you experience any difficulty, contact our support team and we will assist you in verifying the purchase with Bitmain.

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What faults are covered under the Bitmain Antminer warranty?

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The warranty covers manufacturing defects and component failures under normal operating conditions — including hash board failures, control board faults, and PSU defects where the PSU is included. It does not cover physical damage caused by drops or liquid exposure, damage from incorrect voltage supply, or faults caused by operating the miner outside its specified environmental conditions.

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Do I need to return the miner to open a claim?

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Not always. Bitmain will first assess your claim remotely based on the information and evidence you submit. Many firmware-related issues can be resolved without return. If physical repair or component replacement is required, Bitmain will issue an RMA and provide return shipping instructions at that stage.

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What should I do if my miner arrived visibly damaged from shipping?

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Document everything immediately — photograph the outer packaging, inner packaging, and the unit itself before moving it. Contact Mineshop.eu support right away with photos and your order number. Shipping damage claims are handled differently from manufacturing warranty claims and need to be reported promptly to protect your rights under the carrier's insurance.

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Opening a Bitmain Antminer warranty claim is a manageable process when you have the right information at hand. The key is acting promptly, documenting the fault clearly, and keeping your ticket updated. If you are looking to add another miner to your operation while your current unit is being serviced, browse the full range of in-stock hardware at Mineshop.eu's Bitmain Antminer series — including the Bitmain Antminer X9 XMR RandomX ASIC Miner — or explore our wider ASIC miner catalogue for alternatives from leading brands. Mineshop.eu has been supplying European miners with genuine ASIC hardware since 2016, with EU warehouse stock in Ireland and fast DHL/FedEx delivery across all EU countries. If you need hands-on help navigating your warranty claim or have questions about a specific fault, our support team is ready to assist — get in touch with us here.