Article ID: 000031269 Content Type: Troubleshooting Last Reviewed: 07/12/2021

I Cannot Read fan and Power Supply Unit (PSU) Sensors Using the IPMItool


Rack Scale Design Direct Dell* C6320p


Troubleshooting steps when receiving errors while using the Intelligent Platform Management Interface (IPMI) tool


Cannot read fan and PSU sensors using ipmitool:

FAN_1 | disabled | ns
FAN_2 | disabled | ns
FAN_3 | disabled | ns
FAN_4 | disabled | ns
Inlet Temp | disabled | ns
Input Current | disabled | ns
Input Voltage | disabled | ns
SC FW Status | Not Readable | ns
PSU 1 Status | Not Readable | ns
PSU 2 Status | Not Readable | ns
PSU Mismatch | Not Readable | ns
PSU Redundancy | Not Readable | ns
FW Update Status | Not Readable | ns

The System Event Log (SEL) may show the following, too:
4c | 11/17/2018 | 12:47:18 | Power Supply PSU Mismatch | Config Error: Vendor Mismatch | Asserted
4d | 11/17/2018 | 12:47:23 | Power Supply PSU Mismatch | Config Error: Vendor Mismatch | Deasserted

The integrated Dell Remote Access Controller (iDRAC**) helps read the sensors.  Thus, restart this via the racadm racreset hard command.  If this does not help, proceed as follows:

1. Flash the Fan Control Board (FCB) firmware. This is located in the C6300 chassis, but it can be updated using a working iDRAC and operating system, for every node present in the specific chassis. You can find the latest firmware here**.  Installation instructions are available under the proper section at the bottom of the site and/or in the  ReleaseNote_V0318.txt file inside the package.

2. Power-drain the chassis should it be necessary via the ipmi power off / power on command.

**Note: These links are offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.

Contact Support with the system event logs for diagnosis and further advice.