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CHAPTER 4: Troubleshooting
18
Thermal alarm
Thermal warnings
Hardware faults
Make sure that you have obtained a replacement module of the same type before removing any
faulty module.
• Replace a faulty drive with a drive of the same type and equal or greater capacity.
• All drive bays must have a drive carrier or dummy carrier module installed in order to
maintain a balanced airflow.
• All of the supplied plug-in power supply units, electronics modules, dummy carriers, and
blank modules must be installed for the air to flow correctly around the cabinet.
Symptom Cause Action
■
Ops panel SYSTEM FAULT LED
is orange.
■
An orange LED on one or
more power supply module.
■
An audible alarm is sounding.
■
Air temperature in the exiting
power supply module is
above 131°F (55°C).
■
If the internal temperature
measured in the airflow
through the enclosure
exceeds a pre-set threshold, a
thermal alarm sounds.
■
Cooling module failure.
■
Make sure that the local ambient environment
temperature is below the upper 104°F (40°C)
specification.
■
Check the installation for any airflow restrictions at
either the front or rear of the enclosure. A minimum gap
of .98 inch (25 mm) at the front and 1.97 inches (50 mm)
at the rear is recommended.
■
Check for restrictions caused by dust build-up and clean
as appropriate.
■
Check for excessive re-circulation of heated air from the
rear to the front. Installing in a fully enclosed rack
installation is not recommended.
■
If possible, shutdown the enclosure and investigate the
problem before continuing.
■
Replace the cooling module.
Symptom Cause Action
■
All orange LEDs on the Ops
panel and on all drive bays are
flashing.
■
The audible alarm sounds
almost continuously and
cannot be muted.
The temperature is higher than the
thermal alarm threshold (this should
already have been activated).
OR - All fans have failed.
OR - Only 1 fan is operating and the
internal temperature is 104°F (40°C) or
above.
■
Power off immediately.
■
Check for airflow restrictions.
■
Check for power supply module faults.
■
Check for excessive local temperatures.
Caution
If your Gateway E-842R enclosure is turned on and you remove any module, replace
it immediately. If the enclosure is used with plug-in modules, dummy carriers, or blank
modules missing for more than a few minutes, the enclosure can overheat, causing power
failure and data loss. Such use invalidates the warranty.