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February 28th, 2008 15:00

Alert! Air temperature sensor not detected: Optiplex 745 motherboard (minitower version)

Hi :smileyhappy:

 

I just bought an Optiplex 745 motherboard on Ebay and i have the error mentionned in the subject.

 

this motherboard is actually fitted in an Optiplex 210L minitower case.

All is working fine, but the processor fan is a true plane! :smileyindifferent:

 

i look into Dell doc and apparently, the temperature sensor is ON the Pcb of the Frontpanel. (is it sure?)

 

And if someone can confirm this, the Dell MJ047 Front I/O panel is the good one ?

 

Best regards,Ray

 

 

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March 1st, 2008 10:00

Did you use a Dell OEM fan?  The thermistor is on the fan itself - if you use a generic fan you'll get an error like this.

4 Posts

March 2nd, 2008 01:00

Hi :)

 

 

thanks ejn63 for your response.

 

Yes, it's the Dell OEM fan, with the 4 wire,from the 210L minitower Case.

i only change the mobo and the burner (because the mobo have only onboard sata connector)

 

A little precision,perhaps this one can help you to solve this prob :

 

The log into the bios say: Out of range

 

I cross my finger and hope someone can help to fix that !

 

Best regards,ray

 

 

Message Edited by DoZe on 03-01-2008 09:25 PM

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August 1st, 2013 04:00

Hi, I have similar issue (Alert! Air temperature sensor not detected), it came up just after this weekend, when I cleaned the inside of my pc.

Have tried to unplug/replug the fan, reset, power off, etc etc. but the error keeps getting up when rebooted.

I guess the only thing that will solve this is placing a new (original) Dell fan (with temperature sensor) in the machine.

How to I obtain a new (used but still working is also OK) Dell fan for my machine? I have a Dell Optiplex 755

Please send tips or helpfull information to my email address: <ADMIN NOTE: Email id removed per privacy policy>

Thanks!

Mathijs

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