Iceriver PSU Fan Speed Simulator for BP-H-3640 Power Supply
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IceRiver PSU Fan Speed Simulator | Spoofer for BP-H-3640 Power Supply Cooling Replacement
The IceRiver PSU Fan Speed Simulator is a fan-signal spoofer designed to replace the stock cooling fan on the BP-H-3640 (BP-H-3640-11-R-BG / BP-H-3640-11-R-GB) power supply — IceRiver's 3640W PSU used across the KS3, KS3L, KS3M, KS5L, KS5M, and AL3 miners. The PSU runs 180-285VAC 50/60Hz 16A max input and delivers 10.5-14V at 3400W main rail plus 12V at 240W auxiliary — feeding the full mining-hardware envelope.
When you put the miner in a silencer box or convert it to oil cooling, the PSU's stock fan is either redundant (silencer enclosure handles airflow externally) or harmful (oil immersion damages spinning fan bearings). But the PSU controller monitors the fan-tachometer signal and will shut down if it doesn't see one — so the fan can't simply be unplugged. The simulator generates a clean tach pulse that satisfies the PSU controller while keeping the actual fan disconnected. Net effect: lower acoustic signature, longer PSU service life, and silencer / oil compatibility.
When You Need the BP-H-3640 Fan Simulator
- Silencer-box installation — IceRiver miner moved to home / office; PSU fan removed to silence the build, simulator keeps the PSU running.
- Oil immersion conversion — fan removed to prevent oil damage; simulator keeps the PSU controller satisfied.
- Hydro / water-cooled fleet — external cooling replaces the stock fan path; PSU still needs a tach signal.
- PSU fan failure — original fan dead, simulator buys time until full fan replacement arrives.
- Service-life extension — eliminating the spinning fan reduces wear and acoustic stress.
Specs and Features
- Function: replaces the stock cooling fan on the BP-H-3640 PSU.
- Spoofs the tach signal the PSU controller monitors — prevents fan-error shutdown.
- Compatible miners: IceRiver KS3, KS3L, KS3M, KS5L, KS5M, AL3 (all using the BP-H-3640 PSU).
- Noise reduction: removes PSU fan acoustic output entirely.
- Service life extension: no spinning fan bearings to wear out.
- Application: silencer boxes, oil-cooled deployments, hydro setups.
BP-H-3640 Fan Simulator Specifications
| Feature | Specification |
|---|---|
| Function | Replaces BP-H-3640 PSU fan |
| Compatible PSU | BP-H-3640-11-R-BG / BP-H-3640-11-R-GB (3640W rated) |
| PSU Input | 180-285VAC 50/60Hz, 16A max |
| PSU Output | 10.5-14V / 3400W main + 12V / 240W aux |
| Compatible Miners | IceRiver KS3, KS3L, KS3M, KS5L, KS5M, AL3 |
| Noise Reduction | Yes (PSU fan removed) |
| Service Life Extension | Yes (no fan bearing wear) |
| Application | Silencer, oil-cooled, or hydro mining setups |
FAQ — BP-H-3640 PSU Fan Simulator
Q: Does this simulator work on the BP-F-500 (KS2 Lite / AL2 Lite) PSU?
A: No — the BP-F-500 PSU uses a different tach signal protocol and a different fan connector. For Lite-series PSU fan simulation you'll need the corresponding KS Lite / AL Lite fan spoofer.
Q: Will the miner show "fan error" with this installed?
A: No — the simulator generates a clean tach pulse at the rate the PSU controller expects, so the controller sees a "healthy fan" signal and runs normally. No error log entries.
Q: How does this differ from the IceRiver miner-side fan simulator (the one that spoofs the miner's internal fans)?
A: This one is for the PSU fan specifically. The miner-side fan simulator (sold separately) spoofs the two main miner cooling fans on the chassis. For a full silencer or oil setup, you typically need both.
Q: Can I run the BP-H-3640 PSU permanently without any fan at all?
A: Only if the surrounding cooling (silencer box, oil bath, or external air movement) is sufficient to keep the PSU internals below 70°C. The PSU has internal OTP that will trip if it overheats — make sure your replacement cooling solution actually moves heat away from the PSU chassis.
Q: Bulk pricing for fleet conversions?
A: Yes — email contact@lys-sz.com for volume pricing.
Related products
- IceRiver BP-H-3640 PSU (KS3 / KS3L / KS3M / KS5L)
- IceRiver Miner Fan Speed Simulator (RX0 / KS1-KS5L)
- IceRiver AL3 / KS5M Fan Speed Simulator
- IceRiver KS5 / KS5 Pro Fan Speed Simulator
Converting IceRiver KS / AL fleets to silencer / oil / hydro cooling? Email contact@lys-sz.com for bulk fan-simulator pricing. Worldwide shipping from our Shenzhen warehouse.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
