Problem/SymptomPossible Causes | Solution |
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Low output voltage | Overloaded | Reduce the load. |
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No output voltage | Low input | Recharge battery. |
Red LED illuminated | Voltage | Check connections and cable. |
Alarm sounding |
| Continuous operation input |
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| current required. |
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Thermal shutdown | Overloaded | Allow inverter to cool off. |
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| Reduce load. Improve ventilation; make sure |
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| ventilation openings in the inverter are not obstructed. |
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| Reduce ambient temperature. |
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No output voltage | High input | Make sure the inverter is |
Red LED illuminated | voltage | connected to a 12V battery. |
Alarm sounding |
| Check regulation of charging systems |
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No output voltage | Short circuit | Check load for |
Red LED illuminated |
| proper operation. |
No alarm |
| Inspect cables from battery. |
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No output voltage | Inverter switched off | Turn inverter on |
| No power to inverter | Check wiring to inverter. |
| Reverse DC polarity | Observe correct polarity |
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| (black to black/red to red). |
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| Inspect cables from battery. |
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Low battery alarm | Poor DC wiring | Check connections. |
on all the time | Poor battery condition | Make sure battery is fully charged. |