SymCom warrants its microcontroller based products against defects in material or workmanship
for a period of five (5) years* from the date of manufacture. All other products manufactured by
SymCom shall be warranted against defects in material and workmanship for a period of two (2)
years from the date of manufacture. For complete information on warranty, liability, terms, and
conditions, please refer to the SymCom Terms and Conditions of Sale document.
* The 520 Series has a one (1) year warranty and the LSRU series has a two (2) year warranty.
-3- 07/16/03
SYMPTOM
LIGHT
PATTERN
SOLUTION
No lights are on. The unit
seems completely dead
N/A
Measure the three line-to-line voltages. If any of
the voltages are below 150 VAC, the MotorSaver
does not have enough power to operate its internal
electronics. This may occur on a single-phased
system. If the voltages are correct, call SymCom at
1-800-843-8848 or 1-605-348-5580.
Red light is blinking
(On initial installation
power up).
Turn off the three-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. Re-apply the three-phase
power.
Red light is blinking
(After the motor has been
previously running).
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.
The voltage is unbalanced or single-phased.
Measure the incoming line voltages and calculate
the % unbalance. If the voltage unbalance does not
exceed the % unbalance reset value, call SymCom
at 1-800-843-8848 or 1-605-348-5580.
Red light is on steady.
The voltage is out of tolerance. Measure the three
line-to-line voltages. Calculate the average of
the three voltages. If the average is 7% above or
below the nominal voltage as selected by the LINE
VOLTAGE ADJUST, the MotorSaver
is functioning
properly. If the voltage is within ±7% of the selected
line voltage, call SymCom at 1-800-843-8848 or
1-605-348-5580.
Green light blinks, but
motor is not running.
The MotorSaver
is in restart delay.
Green light is on steady,
but motor does not start.
The MotorSaver
is in run mode. Ensure other con-
trol devices are allowing the motor to start. Check
control circuit for loose wires or
malfunctioning switches.
TROUBLESHOOTING