Cisco Systems XR 12410 manual Overtemperature Conditions

Chapter 4 Troubleshooting the Installation

Troubleshooting the Cooling Subsystem

For additional power supply troubleshooting information, see the “Troubleshooting the Power Subsystem” section on page 4-5

Overtemperature Conditions

The following console error message indicates that the system has detected an overtemperature condition or out-of-tolerance power value inside the system:

Queued messages:

%ENVM-1-SHUTDOWN: Environmental Monitor initiated shutdown

The preceding message could also indicate a faulty component or temperature sensor. Enter the show environment command or the show environment all command at the user EXEC prompt to display information about the internal system environment. The information generated by these commands include:

•Voltage measurements on each card from the DC-to-DC converter

•The +5 VDC for the MBus module

•The operating voltage for the blower module.

•Temperature measurements received by two sensors on each card (one for inlet air temperature and one for the card’s hot-spot temperature), as well as temperature measurements from sensors located in each power supply.

If an environmental shutdown results from an overtemperature or out-of-tolerance condition, the Fault indicator on the power supply lights before the system shuts down.

Although an overtemperature condition is unlikely at initial system startup, make sure that:

•Heated exhaust air from other equipment in the immediate environment is not entering the chassis card cage vents.

•You allow sufficient air flow by maintaining a minimum of 6 inches

(15.24 cm) of clearance at both the inlet and exhaust openings on the chassis and the power modules to allow cool air to enter freely and hot air to be expelled from the chassis.

	Cisco XR 12410 Router Installation Guide
OL-13832-01		4-37