Acrtic freezer a30 pwm controlled fan not detected by asus a88x plus

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veniteo

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Jan 5, 2014
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title really says everything. i cannot manually change my fan speeds and the cpu fan does not report rpms to the borad, as i boot into a cpu fan error, (however the fan works and changes speed with load)
 
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If your mobo reports a fan error and the BIOS cannot detect a fan speed, there is a problem with the speed signal's path to the CPU_FAN port. The speed signal is a pulse train (2 pulses per rev) sent from the fan motor to the mobo on Pin #3 of the port. To identify pins, the mobo port has a tongue sticking up in the area of pins 1-3, and not extending to the Pin #4 area. Wire colors are normally: #1 Black (Ground), #2 Yellow (+12 VDC), #3 Green (Speed signal), #4 Blue (PWM signal).

Check for poor wire connection, bent pins, loose connector in the female socket on the end of the fan's wires.
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Paperdoc

Polypheme
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Oct 19, 2006
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If your mobo reports a fan error and the BIOS cannot detect a fan speed, there is a problem with the speed signal's path to the CPU_FAN port. The speed signal is a pulse train (2 pulses per rev) sent from the fan motor to the mobo on Pin #3 of the port. To identify pins, the mobo port has a tongue sticking up in the area of pins 1-3, and not extending to the Pin #4 area. Wire colors are normally: #1 Black (Ground), #2 Yellow (+12 VDC), #3 Green (Speed signal), #4 Blue (PWM signal).

Check for poor wire connection, bent pins, loose connector in the female socket on the end of the fan's wires.
 
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