47
6. Troubleshooting
Alarm indication
RFA fault
Table 9 - System fault diagnosis
Fault symptom | Possible causes |
|
|
RFA | No AC input or input out of bounds. |
|
|
| No AC input or input out of bounds. |
|
|
| AC Input/DC output circuit breaker is open. |
|
|
| Rectifier has received a HVSD signal from the |
| controller. |
|
|
| An internal high voltage shutdown (HVSD) has |
| occurred. The internal High voltage shutdown point set too |
| low (below float or equalize setting). |
|
|
| Excessive impedance in one or both sense leads. |
|
|
| The cooling fan is failed. |
|
|
| DC circuit breaker is open. |
|
|
| A thermal shutdown has occurred. |
| Defective unit. |
| Excessive ambient air temperature. |
| Air inlet/outlet blocked, clogged air filter. |
Helios Rectifier 25/48NT5C06D Installation and User Manual
