8
Instruction Booklet
IB158002EN
Effective October 2018
Eaton SPD Max Series
Surge Protective Device
EATON
www.eaton.com
4.0 Troubleshooting
Many SPD failures result from improper installation. Once the SPD is
installed properly, it is a highly reliable unit. The most common rea-
son for SPD failure is a temporary overvoltage (TOV) condition.
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 3
, Troubleshooting Chart. This Troubleshooting Chart identifies
possible causes and solutions to the malfunction. Further assistance
may be obtained by calling Eaton’s Technical Resource Center (TRC)
and speaking to a Surge Protection Application Engineer, at 1-800-
809-2772, option 4, sub-option 2, including being directed to the
warranty process if applicable.
Table 3. Troubleshooting Chart
Front Mounted Display
Condition
Probable Cause
Solution
Display: Green LEDs ON (1 per phase) and one Green
LED ON for Neu/Gnd Protection
Normal operation
N/A.
Display: Audible Alarm OFF, Form C (N.C.) contact in
the CLOSED state
Normal operation
N/A
Display: Phase Green LED is OFF, same Phase Red
LED is ON, Audible Alarm is ON
Phase protection compromised or lost
Replace SPD (See Note)
Extended Temporary Overvoltage (TOV)
Check electrical system for TOV sources, correct, replace
SPD
Significant surge event
Replace SPD (See Note)
Display: Neu/Gnd Green LED is OFF, Neu/Gnd Red
LED is ON, Audible Alarm is ON (for models with
Neutral connections)
Neu/Gnd protection is compromised or lost
Replace SPD (See Note)
Significant surge event
Replace SPD (See Note)
Display: All phase Green LEDs OFF, all phase RED
LEDs ON, Audible Alarm is ON
All phase protection is compromised or lost
Replace SPD (See Note)
SPD rated voltage is less than system voltage
Replace SPD with correct voltage model (See Note)
Extended Temporary Overvoltage (TOV)
Check electrical system for TOV sources, correct, replace
SPD (See Note)
Significant surge event
Replace SPD (See Note)
Display: Red LEDs is ON. 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
Display: All Green and Red LEDs are OFF, LCD display
is OFF
SPD is not connected to a power source
Check system voltage at SPD connection
Check SPD connections
Troubleshooting Chart (Continued)
Internal SPD Status Indicator
Condition
Probable Cause
Solution
SPD Status: SPD1 and SPD2 LEDs off
Normal Condition
No Action
SPD Status: SPD1 red LED on
Damage to SPD1
Replace SPD1
SPD Status: SPD2 red LED on
Damage to SPD2
Replace SPD2
Red LED on the front panel, but both SPD Status red
LEDs are off
10 pin ribbon cable(s) disconnected or installed wrong
Check 10 pin ribbon cables to see if they are plugged in
correctly with the key oriented in the proper direction on
top of each SPD
otee:
N
If the device is equipped with two Surge Protective Devices open the
enclosure and determine which SPD Status LED is illuminated
