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55
June 2020
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Solar Stik
®
, Inc.
24VDC PRO-Verter 5000-120 AGS Operator Manual
Overcurrent
This fault may be the result of an excessive AC load and causes the inverter to shut down to
protect internal power components. If the overload condition lasts for less than 10 seconds, the unit
automatically restarts and resumes operation. However, if the overcurrent condition occurs for more
than 10 seconds, the unit shuts down and requires a manual restart.
Solution
This fault usually occurs because the connected AC loads are larger than the inverter’s output
capacity, there is a wiring short on the AC output, or the output wires are incorrectly wired. Once
the AC loads are reduced or the output wiring is corrected, manually restart the inverter to resume
operation. If this fault condition continues, perform an inverter reset.
Overtemp
This fault message indicates the PRO-Verter has shut down because the internal power components
(FETs and/or transformer) have exceeded their safe temperature operating range. Once the PRO-
Verter cools down, the fault automatically clears and the unit restarts and continues operation.
Solution
If the fault occurs while inverting, reduce the load on the inverter. If it occurs while charging, turn
down the charge rate. If this fault happens often, ensure the inverter is not in a hot area, has proper
ventilation, and the PRO-Verter cooling fans are working and that the air filters are clean. Shade the
PRO-Verter from exposure to direct sunlight. Solar loading is a major source of heat buildup inside
the PRO-Verter.
Stuck Relay
This fault message displays when the inverter is “inverting”, but the internal AC pass-through relay
that should be open while inverting is closed.
Solution
The AC pass-through relay is most likely stuck. A relay usually sticks because of damage to the
contacts from trying to handle higher currents than that for which they are rated. This is usually
caused by not protecting the relay from handling high continuous currents, or by switching high
current inductive loads. The internal relay contacts are rated to handle 60 amps AC continuously.
If connected to an AC source (grid or generator) and running large inductive loads (i.e., pumps,
motors, etc.) on the PRO-Verter AC output, turn those particular loads off prior to removing the AC
input source. This fault requires an inverter or power reset to clear.
Tfmr Overtemp
This fault message displays when the transformer causes the inverter to shut down to protect
the internal power transformer from damage. Once the transformer cools down, the inverter
automatically restarts and resumes operation.
Note:
A temperature sensor on the transformer will auto-start a connected generator, if the GEN
CTRL is in AUTO mode, thereby transferring support of the load to the generator to maintain
continuity of operations.
