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SYMPTOM
AC output voltage shuts down when
vehicles engine is cranked
POSSIBLE CAUSE
Shut-down due to over temperature
because of fan failure or inadequate
cooling as a result of high ambient
temperature or insufficient air exchange
Shut down due to overload or short
circuit on the output side.
The inverter has been powered from
the starting battery. When the engine is
cranked, the battery voltage drops
below 10V for PST-15S-12A or below
20V for PST-15S-24A
Page 28
REMEDY
1. Check that the fan is working. If not,
the fan / fan control circuit may be
defective. Call Technical Support.
2. 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.
3. If the fan is 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 40º C
4. Reduce the load to reduce the
heating effect.
5. After the cause of over heating is
removed and the unit cools down, it
will reset automatically.
1. Disconnect the load.
2. Manually reset the unit by
switching off and then on again. The
unit should power on normally. (If not,
the unit may have been damaged
permanently). Call Tech Support
3. Reduce the load or remove the
short circuit before powering on
again.
Use a separate deep cycle battery for
powering the inverter. (see page 18)
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