VOLTAGE/FREQUENCY FAULT Kohler — Start but No Load Pickup
At a glance
- Severity
- FAULT STOP
- Domain
- GENERATOR_SYSTEM
- Reference standard
- ISO 8528
What it means
The genset starts but never picks up the load: the ATS does not transfer or the regulator does not stabilize voltage and frequency. The load stays on UPS until autonomy runs out.
Probable causes
- Governor or AVR out of calibration
- ATS quality consent not received (voltage/frequency window)
- Protection tripped during load pickup
- Frequency or voltage outside window at transfer time
Where to start
From the controller, check voltage and frequency at no load and during load pickup, and the generator breaker status.
Full guided diagnosis in the app
The diagnostic tree for this fault has 3 guided steps with measurements, checks and resolutions. You'll find it in DataCIQ, one of the five IndexOS apps: free, works offline.
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The same fault on other brands
More Kohler codes
- FAIL TO START — Fail to Start
- HIGH ENGINE TEMP — High Coolant Temperature / Overheat Shutdown
- LOW FUEL — Low Fuel Level / Fuel Starvation
- LOW OIL PRESSURE — Oil Pressure Loss / Oil Leak
- NOT IN AUTO — Not in Auto / Standby Not Ready