53
7. Troubleshooting
Table 16 - Diagnosing system faults
Fault symptom |
| Possible causes |
|
|
|
The RFA LED is lit. | • | No ac input or input is out of bounds ( ac ON |
|
| LED is extinguished ). |
| • AC Input / dc output circuit breaker is open. | |
| • The rectifier has received an HVSD signal from | |
|
| the controller, or a TR signal is present. |
| • An internal high voltage shutdown ( HVSD ) has | |
|
| occurred. |
| • Two cooling fans or fuses have failed. | |
| • The inrush fuse has blown. | |
| • The dc circuit breaker is open. | |
| • A thermal shutdown has occurred. | |
| • Ambient air temperature is high. | |
| • Air inlet / outlet air is blocked, or the air filter is | |
|
| clogged. |
| • A rectifier is in 'Start Time Delay' mode and the | |
|
| RFA will cease when the required time delay has |
|
| elapsed. |
| • | Defective rectifier. |
The HVSD LED is lit. | • | The internal high voltage shutdown point is set |
|
| to low ( below the float or equalize setting ). |
| • The controller triggered a remote HVSD. | |
|
|
|
|
| − continued− |
Emerson Energy Systems | Rectifier 200I/48 NT5C05C Installation and User Manual |
