TROUBLESHOOTING
SYMPTOM
LIGHT
PATTERN
SOLUTION
No lights are on -
the unit seems
completely dead
N/A
Verify L1, L2 & L3 are connected to terminals 3, 4 & 5.
Measure the three line-to-line voltages. If any of the
voltages are below the specified operating voltage, the
MotorSaver
®
does not have enough power to operate
its internal electronics. If the voltages are correct, call
SymCom at (800) 843-8848 or (605) 348-5580.
Red light is blinking
(on initial power-up)
RED
Turn off the 3-phase power. Swap any two leads
powering the MotorSaver
®
(L1, L2, or L3). There is a
50-50 chance of connecting L1, L2 and L3 correctly the
first time. Reapply 3-phase power.
Red light is blinking
(after the motor has
been running)
RED
The incoming lines have been reverse-phased. The
MotorSaver
®
is preventing the motor from running
backwards. Correct the phase sequence.
Red light is blinking
in this pattern
RED
The voltage is unbalanced or single-phased. Measure
the incoming line voltages and calculate the %
unbalance according to the procedure outlined earlier
in this document. If the voltage unbalance does not
exceed the % unbalance reset value, call SymCom at
(800) 843-8848 or (605) 348-5580.
Red light is blinking
in this pattern
RED
The voltage is high. Measure the three line-to-line
voltages. Calculate the average according to the NEMA
unbalance formula. If the average voltage is 7% above
the nominal voltage as selected by the LINE VOLTAGE
ADJUST setting, the MotorSaver
®
is functioning
properly. If the voltage is within 7%, call SymCom at
(800) 843-8848 or (605) 348-5580.
Red light is on
steady
RED
The voltage is low. Measure the three line-to-line
voltages. Calculate the average according to the
NEMA unbalance formula. If the average voltage is 7%
below the nominal voltage as selected by the LINE
VOLTAGE ADJUST setting, the MotorSaver
®
is
functioning properly. If the voltage is within 7%, call
SymCom at (800) 843-8848 or (605) 348-5580.
Green light blinks
and motor is not
running
GREEN
The MotorSaver
®
is timing through the restart delay
and will energize its contacts when finished, or the
MotorSaver
®
is in manual reset mode and requires a
manual reset to energize its contacts.
Green light is on
steady, but motor
does not start
GREEN
The MotorSaver
®
is in run mode. Ensure other control
devices are allowing the motor to start. Check control
circuit for loose wires or malfunctioning switches.
© 2010 SymCom, Inc. All Rights Reserved 7
