SECTION 11 |
Troubleshooting Guide
47
ISSUE
POSSIBLE CAUSE
REMEDY
When switched ON,
the Green LED marked
“POWER” (2, fig 6.1a)
does not light. Buzzer
is OFF. There is no AC
output voltage.
There is no voltage at
the DC input terminals.
• Check the continuity of the battery input circuit.
• Check that the internal/external battery fuses are
intact. Replace if blown.
• Check that all connections in the battery input
circuit are tight.
Polarity of the DC
input voltage has been
reversed that has blown
the external / internal
DC side fuses.
(Note: Reverse
polarity may cause
permanent damage.
Damage caused due to
reverse polarity is not
covered by warranty).
• Check external and internal fuses. Internal
fuses may be soldered and may not be easily
replaceable. Replace fuses. If unit does not work,
call Technical Support for repair.
Low AC output voltage
(No buzzer alarm).
Low DC input voltage
at the inverter terminals
and the load is close
to the overload limit of
110% (3300W).
• 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 battery input circuit.
• Reduce load to below 3000W.
Buzzer alarm is sounded
when load is switched
ON. Voltage at DC input
terminals reads between
10 to 10.7V for 12V
versions and between
20 to 21.4V for 24V
versions. The Green
LED marked “POWER”
(2, fig 6.1a) is lighted.
Indication light on.
AC output voltage is
available.
DC input voltage is less
than 10.7V for 12V
versions and less than
21.4V 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.
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.
