The Blue wire receives a 25kHz signal (ranging from 21kHz to 28kHz) from the motherboard to throttle speed.
If the fan does not spin at all, you can test the motor windings using a multimeter.
Fluid Dynamic Bearing (FDB) or Hydro Wave Bearing Control Mechanism: 4-Pin Pulse Width Modulation (PWM) The 4-Pin Wire Color Coding foxconn pva092g12h wiring diagram work
It is critical not to swap the tachometer (Pin 3) and PWM control (Pin 4) wires, as this will cause improper fan behavior—typically resulting in the fan either running at full speed constantly or not responding to speed control commands.
Typically ranges from 0.40A to 0.60A (verify the exact label on your specific unit) The Blue wire receives a 25kHz signal (ranging
If you want to run the fan at 100% speed without a motherboard (e.g., using a bench power supply or a generic 12V adapter):
Understanding Foxconn PVA092G12H Fan Wiring The Foxconn PVA092G12H is a popular 92mm, 12-volt cooling fan widely used in Dell, HP, and Lenovo desktop computers. It utilizes a 4-pin Pulse Width Modulation (PWM) configuration to dynamically control fan speeds based on system temperature. Typically ranges from 0
The PVA092G12H operates on a circuit. The "H" in the model number typically signifies a "High Speed" or "High Performance" rating, meaning it can pull more current (often around 0.40A to 0.60A) than a standard case fan.
The PVA092G12H typically follows a standard 4-pin color code, though some OEM versions (specifically for older HP or Dell machines) may vary. Always verify the pin positions on the connector itself. Wire Color Signal Function Description Black Ground (GND) Negative power terminal. 2 Yellow +12V DC Main power supply. 3 Green Tachometer (Sense) Sends speed signal to the motherboard. 4 Blue PWM Control Receives speed control signal from the system. Technical Specifications Wiring a 4-pin fan direct to 12v DC | Tom's Hardware Forum
