| Error No. | Explanation | Corrective measures |
| 7507 | Motor-protective circuit-breaker of the fan has tripped | • Check function of the fans. • Clean the fans. • Clean dirty fan inlets and ventilation plates |
This fault occurs when the Stack Fan detects a problem with the incoming AC power. The fan will attempt to protect itself and generate this error. Power cycling the inverter for 5 minutes should resolve the issue. If not the heat sink fan will need to be replaced.
