Troubleshooting Reference
Troubleshooting Reference
| Problem | Possible Cause | Solution |
Low output voltage | You are using a |
(96 | voltmeter that cannot |
| accurately read the |
| RMS voltage of a |
| modified sine wave. |
Use a true RMS reading voltmeter.
Load runs for a few | Overload | Reduce the load. |
seconds and then FAULT |
|
|
indicator lights. |
|
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|
|
|
No output voltage, alarm | Low input voltage | Recharge battery; check |
sounding, and FAULT |
| connections and cable. |
indicator on. |
|
|
|
|
|
No output voltage; | The inverter is off. | Turn the inverter on. |
neither indicator on. | No power to the | Check wiring to inverter. |
| inverter. | Have a qualified technician |
| Inverter fuse open. | check and replace the fuse |
|
| if necessary. |
| Reverse DC polarity. | Have a service technician |
|
| check and replace the fuse, |
|
| making sure to observe |
|
| correct polarity. |
|
|
|
No output voltage and | High input voltage. | Make sure the PROwatt is |
FAULT indicator is on. |
| connected to a 12 V battery. |
|
| Check voltage regulation of |
|
| the charging system. |
|
|
|
Low battery alarm stays | Poor DC wiring; poor | Use proper cable and make |
on; load ran for short | battery condition. | solid connections. Install a |
time. |
| new battery. |
|
|
|
No output voltage; | Thermal shutdown. | Allow the unit to cool off. |
FAULT indicator on; |
| Reduce the load if |
load exceeds 600 W/5 A |
| continuous operation is |
output. Unit hot to touch. |
| required. |
|
| Improve ventilation. Make |
|
| sure ventilation openings |
|
| are not obstructed. Reduce |
|
| ambient temperature. |
|
|
|
No output voltage and | Short circuit. | Check AC wiring for short |
FAULT indicator is on. |
| circuit. |
| Very high power load. | Remove the load. |
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