Troubleshooting:
Item Symptoms
Action
Description
1
LCD display is flashing
Press any key
1. This is normal operation after
you plug the unit into a wall outlet.
2. AC power to the unit has been
interrupted.
2
Over Current icon on LCD
is flashing and audible
alarm is sounded, output is
off and the red LED in the
OFF key is flashing
Press Reset key (OFF key), check &
remove the appliance which is drawing
over current or reduce the number of
appliances connecting to the unit or
set a larger Max. Amps setting. Press
ON key to restart
This is the over current protection
function indicating the total power
consumption is larger than the
Max. amps setting value or that
an appliance is drawing too much
current.
3
Over Load icon on LCD is
flashing and audible alarm
is sounded, output is off
and the red LED in the
OFF key is flashing
Press Reset key (OFF key), check &
remove the appliance which is drawing
an over load of current. Press ON key
to restart.
This is the over load protection
function. Indicates that attached
appliances could have a short
circuit.
4
Abnormal Voltage icon on
LCD is flashing and
audible alarm is sounded,
output is off and the red
LED in the OFF key is
flashing
The unit will restart automatically when
the AC power line voltage returns to
normal voltage range. If condition
persists call a qualified technician.
This is the abnormal voltage (too
high or too low) protection
function.
5
No Load icon on the LCD
display flashes
The unit will power on automatically
when the load returns
This is the no load protection
function to reduce the chance
electrical shock or damage
6
No Load icon continues to
flash when appliances are
connected and turned on
Increase the number of connected
appliances
The minimum current detected by
the unit is 1 mA. Some few
appliances may have a stand-by
mode that consume less than
1mA
7
Replace icon on the LCD
flashes
Request technical support
This is a self diagnostic function
for the main power relay switch.
This indicates the relay is non
functional.
8
Ground OK & Wiring OK
icon on the LCD are
turned off
Ask for a qualified electrical technician
to check your house wiring and
grounding
These icons turning off indicate a
wiring defect
9
Surge OK icon on the LCD
is turned off
Request technical support
This is a self diagnostic function
for the surge protector MOV
indicating the MOV is non
functional
10
No display in the LCD, no
response from pressing
keys
1. Check that the unit connected to
an energized AC wall outlet.
2. Check if the NFB (No Fuse
breaker) is ejected from the body
of the unit. If yes, disconnect any
defective appliances from the unit,
then press the NFB button again
to restart
3. Request technical support
When no AC power is applied or if
the NFB is ejected the unit will not
function.
