Juniper EX4200 Hardware Manual page 254

Table 66: Causes and Remedies for Temperature Alarms (continued)
Cause
Fan module or fan tray has
failed.
Restricted airflow through the
switch due to insufficient
clearance around the installed
switch.
Remedy
Check the fan.
Replace the faulty fan module or fan tray.
If the above two checks show no problems, open a support case using the Case
Manager link at https://www.juniper.net/support/
(toll-free within the United States and Canada) or 1-408-745-9500 (from outside
the United States).
Ensure that there is sufficient clearance around the installed switch. See the following
topics to understand the clearance requirements of various EX Series switches.
or call 1-888-314-5822
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