PXIe Chassis Has Red Flashing LED and Non-Functional Fans

Updated Sep 17, 2019

Reported In

Hardware

  • PXI Chassis

Issue Details

  • My PXI chassis has a blinking red LED for the fan and the fans are non-functional.
  • I have a PXI Chassis, the fan switch on the back was set to Auto and after some years the chassis powered off by itself. It will only power on with the fan switch set to high. If you set the switch back to Auto it will not power up.

Solution

You can perform a power cycle:

  1. Disconnect the power cord of the chassis.
  2. Press the power button for 5 seconds and release.
  3. Connect again the power cord to the chassis
  4. Change the Fan switch to Auto
  5. Power up the chassis

If your chassis doesn't turn on Auto and you have the PWR LED Red it means the Power is out of Spec, we recommend searching the User Manual of your chassis for further information.

  • The blinking LED indicates that one or more of the fans is failing and needs to be replaced.
To troubleshoot this issue, replace the cooling fan with a verified functioning cooling fan and test the chassis. If the cooling fan functions correctly, the original cooling fan is faulty and should be replaced.

If the replacement cooling fan also fails, please contact NI Support.

Additional Information

To purchase a replacement fan, please contact National Instruments.

Alternatively, a replacement cooling Fan Assembly can be ordered from the National Instruments website by following these steps: 

  1. On the National Instruments website, go to the PXIe-XXXX product page.
  2. Click on 'View Product Details'. This will display the family of chassis.
  3. Scroll down to the PXIe -XXXX Chassis and select 'View Accessories'.
  4. Scroll down to Chassis Fan Accessories, where you'll see an option to add a Replacement Fan Assembly.

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