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Eaton 9170
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UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality
111
What to DoWhat It MeansAlarm Message
P EPO The Emergency Power-off function
has been activated.
Deactivate the external EPO switch and restart the
UPS by pressing the ON button through the front
panel display.
T Call Service The UPS has detected a problem that
requires service.
Contact your service representative.
T Call Service
Phase Error
The UPS has detected the input
phase rotation to be incompatible
with its output wiring and will not
start up.
Correct the input wiring problem and restart the UPS.
T Call Service
Module Failure
A power module has detected an
internal fault and has shut down.
Look for the slot number (third line on display) of the
power module and replace the defective module.
T Call Service
Module Handle Open
(firmware versions 2.22
and later)
The UPS has detected an open
power module handle.
Look for the slot number (third line on display) of the
power module and close the handle.
T Call Service
Excessive Transfers
The UPS has detected an excessively
high number of automatic transfers
from High Efficiency mode, and has
switched to Double Conversion
(Auto) mode.
Contact your service representative.
T Call Service
Precharge Failure
A power module has detected an
initialization sequence problem and
will not start up.
Look for the slot number (third line on display) of the
affected module. Contact your service
representative.
T Call Service
Incompatible Module
A power module with incompatible
firmware has been installed in the
system.
Look for the slot number (third line on display) of the
affected module. Contact your service
representative.
5 Fan Failure The UPS has detected a module fan
problem that requires service.
Contact your service representative.