Juniper EX2300 Series - Page 260

• If the temperature of FPC 3 exceeds 55° C, the output indicates that the fans are operang at a high
speed (no alarm is triggered).
• If the temperature of FPC 3 exceeds 65° C, a yellow alarm is triggered to indicate that one or more
fans have failed.
• If the temperature of FPC 3 exceeds 75° C, a yellow alarm is triggered to indicate that the temperature
threshold limit is exceeded.
•
If the temperature of FPC 3 exceeds 80° C, a red alarm is triggered to indicate that one or more fans
have failed.
• If the temperature of FPC 3 exceeds 105° C, a red alarm is triggered to indicate that the temperature
threshold limit is exceeded.
• If the temperature of FPC 3 exceeds 110° C, the switch is powered o.
Table 63 on page 251 lists the possible causes for the switch to generate a temperature alarm and the
respecve remedies.
Table 63: Causes and Remedies for Temperature Alarms
Cause Remedy
Ambient temperature is above
threshold temperature.
Ensure that the ambient temperature is within the threshold temperature limit.
See "Environmental Requirements and Specicaons for EX Series Switches" on
page 55.
Fan module or fan tray has
failed.
• 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 hps://www.juniper.net/support/ or call
1-888-314-5822 (toll-free within the United States and Canada) or
1-408-745-9500 (from outside the United States).
Restricted airow through the
switch due to insucient
clearance around the installed
switch.
Ensure that there is sucient clearance around the installed switch. See the
following topics to understand the clearance requirements of various EX Series
switches.
251