Samlexpower PST-300-12 Manuel Du Propriétaire page 43

Section 11 |
TABLE 11.1 TROUBLESHOOTING GUIDE (continued from previous page)
ISSUE
There is no AC output. Status
LED (2, Fig 6.1) is ORANGE.
Buzzer is ON. Green indica-
tion on the GFCI outlet is OFF.
There is no AC output. Status
LED (2, Fig 6.1) turns
ORANGE. Buzzer is ON.
Green indication on the GFCI
outlet is OFF.
There is no AC output.
Buzzer alarm is sounded.
Status LED (2, Fig 6.1) turns
ORANGE. Green indication on
the GFCI outlet is OFF.
troubleshooting Guide
POSSIBLE CAUSE
Shut-down of AC output
due to high input DC
voltage: 16.5V or higher
for PST-300-12 or, 33V or
higher for PST-300-24
Shut-down of AC output
due to AC output voltage
dropping to < 80VAC
because of short circuit
or due to very low load
impedance.
Shut-down of AC output
due to over temperature
because of fan failure or
inadequate cooling as a
result of high ambient
temperature or insufficient
air exchange
REMEDY
Check that the voltage at the DC input termi-
nals is less than 16.5V for PST-300-12 or, less
than 33V for PST-300-24.
Ensure that the maximum charging voltage of
the battery charger / alternator / solar charge
controller is below 16.5V for PST-300-12 or,
below 33V for PST-300-24.
Ensure that an unregulated solar panel is not
used to charge a battery. Under cold ambient
temperatures, the output of the solar panel
may exceed 22V for 12V system or 44V for
24 V system. Ensure that a charge controller is
used between the solar panel and the battery.
Reduce the load, / remove 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 com-
pletely, 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, wait for 3 minutes and then
switch ON again.
Before switching ON again, remove the short
circuit / very low impedance load.
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 unit cools down sufficiently, it will reset
automatically.
SAMLEX AMERICA INC. | 43