Fan Speed Tester for ASIC Miner

Description

Asic Miner Fan Tester

The Asic miner fan tester is built for reliable ASIC miner cooling.

The Fan Speed Tester for ASIC Miner is a dedicated diagnostic tool that lets you verify whether a cooling fan is functional, measure its RPM, and confirm proper PWM speed control — without powering up the entire miner. If you have ever swapped a fan only to discover the replacement was also dead, or spent time troubleshooting a thermal shutdown that turned out to be a fan running at half speed, this tool eliminates the guesswork.

ASIC miners rely on high-RPM cooling fans to survive. When a fan fails or degrades, the control board detects abnormal RPM and may shut down the entire machine to protect the hashboards. The Fan Speed Tester connects directly to 4-pin and 6-pin fan connectors and supplies 12V DC power, letting you spin up any miner fan on the bench. It reads the tachometer signal and displays the actual RPM, so you can confirm whether a fan is dead, degraded, or running within spec before reinstalling it.

D-Central’s ASIC repair technicians use fan testers daily in our Laval, Quebec workshop. When a miner comes in with thermal errors or fan fault codes, the first step is isolating whether the problem is the fan itself, the fan connector on the control board, or a firmware issue. This tool handles the fan side of that equation instantly. We stock it because we rely on it — and because every serious miner or repair technician should have one on their bench.

Technical Specifications

Specification	Value
Product Type	ASIC miner cooling fan diagnostic tester
Supported Connectors	4-pin PWM (KF2510) and 6-pin PWM (5557 square)
Supply Voltage	12V DC
RPM Display	Digital readout of actual fan speed
PWM Control	Adjustable speed control for variable RPM testing
Compatible Fans	Antminer, Whatsminer, Avalon, Innosilicon, Iceriver, iPollo, and other ASIC miner fans
Power Source	External 12V adapter (included)

Key Features

• Universal compatibility — supports both 4-pin and 6-pin PWM fan connectors, covering virtually all current ASIC miner cooling fans from Bitmain, MicroBT, Canaan, Innosilicon, Iceriver, and iPollo.
• Instant RPM verification — reads the tachometer signal directly and displays real-time RPM. No need to power up the miner, connect to a pool, or wait for the firmware to report fan speed.
• PWM speed control — adjust the fan speed from idle to maximum to test the full operating range. Identify fans that work at low speed but stall under full load.
• Bench-friendly design — compact, standalone tool that requires only a 12V power supply. Test fans on the workbench without needing the miner’s control board or PSU.
• Sort good from bad instantly — when processing bulk fan replacements or sorting through used inventory, the tester lets you verify each fan in seconds.

Common Use Cases

• Diagnosing fan fault errors — when your Antminer or Whatsminer reports a fan error, test the fan independently to confirm whether it is the fan or the control board connector.
• Verifying replacement fans — before installing a new or used replacement fan, confirm it spins up correctly and reaches its rated RPM.
• Preventive maintenance — test fans periodically to catch degradation before it causes thermal shutdowns. A fan running 30% below rated speed may not trigger an error code but is already compromising cooling.
• Bulk testing — repair shops and mining farms processing multiple units can quickly sort functional fans from failed ones.

Frequently Asked Questions

Which miner fans does this tester work with?

It works with virtually all ASIC miner cooling fans that use 4-pin or 6-pin PWM connectors. This covers Bitmain Antminer (S9, S17, S19, S21 series), MicroBT Whatsminer (M20, M30, M50, M60 series), Canaan Avalon, Innosilicon (T2, T3 series), Iceriver, and iPollo models. If your fan uses a standard 4-pin KF2510 or 6-pin 5557 connector, this tester will work with it.

Can I use this to diagnose thermal shutdowns?

Yes. If your miner is shutting down due to high temperatures, one of the first things to check is whether the fans are spinning at their rated RPM. This tester lets you remove each fan and verify it independently. If the fan reaches rated speed on the tester but the miner still reports fan errors, the issue is likely on the control board side (connector, firmware, or fan detection circuit).

Does it come with a power supply?

Yes. The tester comes ready to use with its 12V DC power adapter. Simply plug it in, connect your fan, and start testing.

Can I test fans without removing them from the miner?

The tester is designed for bench use with the fan disconnected from the miner. You will need to unplug the fan from the control board and connect it to the tester. This takes seconds — ASIC miner fans use quick-disconnect connectors.

Is this only for repair technicians?

No. Any home miner who maintains their own equipment will benefit from having a fan tester. Fans are the most common failure point on ASIC miners, and being able to diagnose fan issues without sending the entire machine for repair saves time and money. That said, professional repair shops will get the most value from the speed of bulk testing.

Why Buy from D-Central

D-Central Technologies has been repairing ASIC miners since 2016. Our technicians in Laval, Quebec diagnose and repair thousands of miners every year, and fan failures are among the most common issues we see. We stock the Fan Speed Tester because it is the same tool our bench technicians reach for every day. When you buy repair tools from D-Central, you are buying what the professionals use — not what looks good in a listing. Need help diagnosing a fan issue? Our ASIC repair service is always available.