SECTION 11 |
Troubleshooting Guide
48
ISSUE
POSSIBLE CAUSE
REMEDY
There is no AC output.
The Green LED marked
“POWER” (2, FIG 6.1A)
is lighted. Buzzer is ON.
Shut-down due to high
input DC voltage – >
16.5V for 12V versions
and > 33V for 24V
versions.
• Check that the voltage at the DC input terminals
is less than 16.5V for 12V versions and less than
33V for 24V versions.
• Ensure that the maximum charging voltage of
the battery charger / alternator / solar charge
controller is below 16.5V for 12V versions and
below 33V for 24V versions.
• Ensure that an unregulated solar panel is not
used to charge a battery. Under cold ambient
temperatures, the output of the solar panels
may exceed 22V for 12V Panels or 42V for 24V
Panels. Ensure that a charge controller is used
between the solar panel and the battery.
AC output shuts down
completely. Red LED
marked “OVERLOAD”
(3, fig. 6.1a) is lighted.
Buzzer is ON. The Green
LED marked “POWER”
(2,fig. 6.1a) is lighted.
Permanent shut-down
of the AC output due to
continuous overload >
110% (3300W ± 50W)
for 2 to 3 sec or due to
short circuit on the AC
load circuit.
• 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.
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 cause of the
shut-down.
There is no AC
output. Buzzer alarm
is sounded. Red LED
marked “OVER TEMP”
(4, fig 6.1a) is lighted.
The Green LED marked
“POWER” (2, fig. 6.1a)
is lighted.
Shut-down due to
over temperature
because of fan failure
or inadequate cooling
as a result of high
ambient temperature
or insufficient air
exchange.
• Check that the fans are working. If not, the fan
control circuit may be defective.
• If the fans are working, check that the ventilation
slots on the suction side and the openings on the
discharge side of the fans are not obstructed.
• If the fans are working and the openings are not
obstructed, check that enough cool replacement
air is available. Also check that the ambient 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.
Buzzer alarm is sounded
when load is switched
ON. Voltage at the DC
input terminals reads
below 10V for 12V
versions and below
20V for 24V versions.
The Green LED marked
“POWER” (2, fig 6.1a)
is lighted. GREEN
indication light on.
There is no AC output.
Shut-down due to low
DC input voltage - Less
than 10V for 12V
versions and less than
20V for 24V versions.
• Check that the battery is fully charged. Recharge,
if low.
• Check that the battery cables are thick enough
to carry the required current over the required
length. Use thicker cables, if required.
• Tighten connections of the battery input circuit.
• The AC output voltage will switch ON
automatically when the DC input voltage rises
to 11.5V ± 0.3V for 12V version and 23V ± 0.5V
for 24V version.
