58 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 59
SYMPTOMS
POSSIBLE CAUSE
REMEDY
• There is no AC output
• The Green LED marked
"POWER"
(2, Fig 6.1)
is
lighted
• Buzzer is on.
• Status LED on the GFCI
outlet
(5C, Fig 6.1)
is OFF
Shut-down due to high
input DC voltage
• DC input voltage is
16.5V or higher for PST-
600-12
• DC input voltage is 33V
or higher for PST-600-24
Refer to precautions detailed at Section 8.4.1
to prevent DC input over voltage
• The unit will reset automatically when the
DC input voltage drops below 16.5V for
PST-600-12 or below 33V for PST-600-24
• AC output shuts down
completely
• Red LED marked
"OVERLOAD"
(3, Fig 6.1)
is lighted
• Buzzer alarm is ON
• Green LED marked "POWER
ON"
(2, Fig 6.1)
is lighted
• Status LED on the GFCI
outlet
(5C, Fig 6.1)
is OFF
Permanent shut-down of
the AC output due to:
• Continuous overload
more than 110% -
115%
OR
• Short circuit on the AC
load side
• Reduce the load / remove the short circuit
• The load is not suitable as it requires higher
power to operate. Use an inverter with
higher power rating.
• If the unit goes into permanent overload
again after resetting and removing the load
completely, the unit has become defective.
Call Technical support.
NOTE:
The unit will be latched in this shut-
down condition and will require manual reset.
To reset, switch OFF the power ON/OFF switch
(1, Fig 6.1)
, wait for 3 minutes and then switch
ON again.
Before switching ON again, remove the cause
of the shut-down.
• There is no AC output.
Buzzer alarm is sounded.
The Green LED marked
"POWER"
(2, Fig 6.1)
is
lighted. Green indication
light on the GFCI is OFF.
• Buzzer alarm is ON
• Red LED marked "OVER
TEMP"
(4, Fig 6.1)
is lighted
• Green LED marked "POWER
ON" is lighted
• Status LED on the GFCI
outlet
(5C, Fig 6.1)
is OFF
Shut-down due to over
temperature because of
fan failure or inadequate
cooling as a result of high
ambient temperature or
insufficient air exchange
• Internal hot spot is at 90
±
5
°
C or higher
Check that the fan is working. If not, the fan
control circuit may be defective. Call
Technical Support.
If the fan is working, check that the ventilation
slots on the suction side and the openings
on the discharge side of the fan are not
obstructed.
If the fan is working and the openings are not
obstructed, check that enough cool replace-
ment air is available. Also check that the ambi-
ent air temperature is less than 40ºC.
Reduce the load to reduce the heating effect.
After the cause of overheating is removed and
the internal hot spot cools down to 65
±
5
°
C,
the AC output will be restored automatically.
…Continued on page 60
SECTION 11 |
Troubleshooting Guide
