Samlex Europe PST-300S-12E, Owner'S Manual

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48 | SAMLEX AMERICA INC.
SECTION 11 | Troubleshooting Guide
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 exter-
nal / 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. Indica-
tion 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 indica-
tion 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 au-
tomatically when the DC input voltage rises
to 11.5V ± 0.1V for 12V version and 23V ±
0.2V for 24V version.
SAMLEX AMERICA INC. | 51
SECTION 12 | S
!
CAUTION! RISK OF FIRE
Do not replace any vehicle fuse with a rating higher than recommended by
the vehicle manufacturer. PST-300
S -12 E is rated to draw 360 Amperes from 12V vehicle
outlet and PST-300 S -24 E is rated to draw 180 Amperes from 24V battery vehicle outlet.
Ensure that the electrical system in your vehicle can supply this unit without causing the
vehicle fusing to open. This can be determined by making sure that the fuse in the ve-
hicle, which protects the outlet, is rated higher than 360 Amperes for PST-300
S -12 E (12V
(24V battery). Information on t E battery), or higher than 180 Amperes for PST-300 S -24 he
vehicle fuse ratings is typically found in the vehicle operator's manual. If a vehicle fuse
opens repeatedly, do not keep on replacing it. The cause of the overload must be found.
On no account should fuses be patched up with tin foil or wire as this may cause serious
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