Instruction Manual IM01005031E - rev.7
Effective December 2020
Eaton www.eaton.com 23
Eaton SPD Series for mounting external
to electrical distribution equipment
9.0 Troubleshooting feature package 4,
Power Xpert SPD
Many SPD failures result from improper installation. Once the
Power Xpert SPD is installed properly, it is a highly reliable unit.
If the SPD does not function properly, first confirm that it is
installed properly. See Section 2, “Installation.”
If the SPD malfunctions after it has been operating routinely, refer
to Table 5. This troubleshooting chart identifies possible causes
and solutions to the malfunction. Further assistance may be
obtained by calling Eaton’s Applications Engineers, at
1-800-809-2772 or email SPD@eaton.com, including being
directed to the warranty process if applicable.
Table 5. Troubleshooting chart for Power Xpert SPD
Condition Probable cause Solution
Phase LEDs are green (1 per phase) and neu/gnd LED is green Normal operation N/A.
Audible alarm OFF, form C (N.C.) contact in the CLOSED state Normal operation N/A.
One phase LED is red, audible alarm is ON Phase protection compromised or lost
Extended temporary overvoltage (TOV)
Significant surge event
Replace SPD
Check electrical system for TOV sources, correct,
replace SPD
Replace SPD
Neu/gnd LED is red, audible alarm is ON (for models with
neutral connections)
Neu/gnd protection is compromised or lost
Significant surge event
Replace SPD
Replace SPD
All phase LEDs are red, audible alarm is ON All phase protection has been lost
SPD rated voltage is less than system voltage
Extended temporary overvoltage (TOV)
Significant surge event
Replace SPD
Replace SPD with correct voltage model
Check electrical system for TOV sources, correct,
replace SPD
Replace SPD
One of the display LEDs is red. audible alarm is OFF Audible alarm silence button has been depressed and
Alarm is silenced
Normal operation
If power is cycled and a fault condition still exists, the
audible alarm will reactivate. Replace SPD.
All LEDs are OFF, LCD display is OFF SPD is not connected to a power source Check system voltage at SPD connection
Check SPD connections
One or more phase LED is yellow and neu/gnd LED is green SPD has lost some protection on the phase with the yel-
low LED
Monitor SPD, some protection has been lost.
Surge counts are accumulating rapidly Noise on phase line Contact an Eaton Customer Support at 1-800-809-
2772 or email SPD@eaton.com.
Stuck button error on the local display One or more of the buttons were depressing during
startup.
Clear buttons of any obstructions, if that doesn’t
resolve the matter contact Eaton Customer Support at
1-800-809-2772 or email SPD@eaton.com.
LCD is turning off/on and there is no communication. Insufficient input voltage. Verify phase voltages are within tolerances.
Error “Web page not working”. Available TCP connection limit reached. Close excess webpage tabs or applications attempt-
ing to access port.
BACnet port not communicating. BACnet setting disabled (default). Enable BACnet and reboot device.
Modbus port no communicating. Modbus setting disabled (default). Enable Modbus and reboot device.
Webpage not secure notice. Security certificate not installed. Download and install certificate.
Web UI surge and general logs will not load Modbus disabled. Enable Modbus and reboot device.
Time stamps inaccurate. Clock not synced.
Supercap drained of power during extended power loss.
Set clock and use SNTP feature to maintain accurate
time stamp.
Any LCD communication setting ‘save’ initiates a soft reset. All communication settings modifications require reboot
to enable.
Must re-enter settings menu each time a communica-
tion setting is changed.
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