Liquid cooling module problems (NeptAir module)

Use this information to resolve problems with the Processor Neptune^TM Air Module (NeptAir).

Liquid leak problem

Liquid leaks can be identified through the following practices:

If the server is on remote maintenance,
- A Lenovo XClarity Controller event shows:
  FQXSPCA0041N: Liquid is leaking from closed loop [CoolingSensorName].
- Lenovo XClarity Controller has defined lots of system conditions as IPMI sensors. Users can use IPMI commands to check system running status. Here are examples of executing ipmitool, an open-source common tool which follows Intel’s IPMI standard. Check for liquid leakage status with command lines as shown.
  - The event logs shown with the parameter:
```
sel elist
```
  - Liquid Leak ׀ EAh ׀ ok ׀ 30.1 ׀ Transition to Critical from less severe
    If liquid leakage happens, the log above will show up. The status of all sensors can be fetched with the parameter:
```
sdr elist
```
If the server is within reach, and the amber LED is lit on the front operator panel, potential liquid leaks may have occurred. It is required to open the top cover to check the LED status of the leakage detection sensor module. See Front-operator-panel LEDs and buttons and LED on the leakage detection sensor module for more details.

Steps to resolve liquid leaks

If the LED on the leakage detection sensor module is blinking green, follow the procedures to get help.

Check for green liquid leakage around the radiator, liquid pipes and pumps.
If green liquid found, power off the server and remove the NeptAir module.
Clean up the liquid from any components in the chassis. Inspect the server for any signs of moisture in sockets or gaps.
Contact Lenovo Support.

A Lenovo XClarity Controller event shows:

FQXSPCA0042M: Liquid leak detector for [DeviceType] is faulty.

Steps to resolve cable break

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