TROUBLESHOOTING GUIDE
For technical assistance, please call 1-800-780-4324 x 20311
Manufactured by Southwire Company, LLC, 4525 140th Avenue North, Suite 900, Clearwater, Florida 33762
© 2017 Southwire Company, LLC. All rights reserved. * Trademark of Southwire Company, LLC. Registered in the United States.
Surge Guard devices protect your watercraft from low quality or incorrect shore power.
Normally, shore power should be around 115 –120 Volts AC. When power falls too far outside this range, it represents a poor
or hazardous condition to your watercraft’s electrical system. Surge Guard devices provide protection to your watercraft by
turning off power when the line voltage L1 falls below 102 Volts AC or goes above 132 Volts AC.
This device also protects your electrical system from a reverse polarity condition which indicates that the hot and neutral lines
of shore power are swapped or reversed. This can be hazardous to equipment and safety. Surge Guard unit will not connect
power to your watercraft until the reverse polarity fault is corrected.
In the event your device is not functioning as expected, perform the following troubleshooting steps in order to determine and
correct any malfunctions. Note: Testing should be performed with AC units and electrical appliances turned off, then verified
with appliances turned on.
Connect the shore power cord to a 120V, 30A power source. The LCD screen will display “DELAY” for 128 seconds while the
Surge Guard device is monitoring the incoming power.
PROBLEM
TROUBLESHOOTING STEPS
Watercraft powers up after 128 seconds but then turns off after another
8-10 seconds.
The device may be operating properly, and you may have a low voltage
condition. In this case, turn off as many loads as possible. It is not
safe to operate some equipment with low voltage. Verify that the input
voltage is greater than 102VAC with loads turned on and off.
Watercraft does not power up after 128 seconds after connecting to
shore power.
Check the LCD display and the Caution When Flashing light (Red LCD).
Check voltage with voltmeter at connection.
LCD shows a fault such as L1 or L1 High and the Caution When Flash-
ing light is blinking.
There could be an open conductor or unsafe power. Check the input
connections and shore power cord.
L1 is within range (102 – 132VAC) and there is no power.
Call Southwire Technical Support at 1-800-780-4324.
LCD screen displays “REVERSE POLARITY” and the Caution When
Flashing light is blinking
Shore power connections are reversed and you have an unsafe condi-
tion. In this case notify your marina of the condition in order to correct
the fault.
A fault occurs such as a low or a high voltage during normal operation
when shore power is within good operating range
The device will turn off power to the watercraft and will display a fault
message on the LCD display. If the power returns to normal, the device
will display “DELAY” on the LCD screen and will wait 128 sec-onds
before turning power to the watercraft back on.
1. Low Voltage – If the input voltage drops below 102VAC for more than 8 seconds, the power will be removed protecting your electronics. This
condition may be caused by overloading the marina's power grid. Try reducing your loads. Otherwise, do not operate until power is restored to
safe levels.
2. High Voltage – If the input voltage increases above 132VAC for more than 8 seconds, power will be removed. In generator mode, check for load
balance. Check the generator’s voltage regulator and adjust to safe operating levels.
3. Line 1, Line 2, or Neutral Open – Check all input wiring to the Surge Guard device. Check the shore power cord and wiring from the generator if
applicable. Check/replace adapter if reducing down to 120V, 20A service. Notify marina for shore power problems if applicable.
4. Caution When Flashing Light – If the caution light is on bright, there is high voltage on the ground or neutral wires. If the light is dimly lit, there is
a low voltage on the neutral wire. It is not uncommon for 2 to 3 volts to be on the neutral wire with respect to ground.
506-00012B
Model 67030
30A Surge Guard* Portable RV
Power Protection Device with LCD Display
