FREQUENCY LOW SD *
UnclassifiedGeneral
What This Code Means
Governed frequency falls below 90% of the system frequency setting for more than 10 seconds; Governed frequency falls 1 Hz below the system frequency setting for more than 60 seconds
Possible Causes
- •Excessive generator load
Suggested Actions
- 1Reduce the load and restart the generator set
Related Rehlko Fault Codes
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Get a diagnosis walkthrough for FREQUENCY LOW SD * on your specific Rehlko unit — cited to the OEM manual, not a forum guess.
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