AF
UnclassifiedCooling
What This Code Means
Controller display shows AF; Generator set engine will not start; Shutdown occurs if the engine coolant temperature exceeds the maximum temperature for more than 5 seconds; Shutdown occurs if a low oil pressure condition exists for more than 5 seconds; Shutdown occurs after 3 unsuccessful starting attempts; No engine rotation is sensed during cranking
Possible Causes
- •Emergency stop button activated
- •Spark plug issue
- •Blocked air inlets and exhaust outlets
- •Low oil level
- •Leaks in the lubrication system
- •Fuel supply issue
- •Battery issue
- •Loose connections
Suggested Actions
- 1Place the generator set master switch in the OFF/RESET position
- 2Investigate and correct the cause of the emergency stop
- 3Rotate the emergency stop switch knob clockwise and release it
- 4Check that the knob returns to the deactivated (out) position
- 5Move the generator set master switch to the RUN or AUTO position to restart the generator set
- 6Verify that the controller display no longer shows a fault code
- 7Check the spark plug
- 8Check for blocked air inlets and exhaust outlets
- 9Check the oil level at the engine
- 10Check for leaks in the lubrication system
- 11Check the oil level and add oil if the level is low
- 12Check the fuel supply
- 13Check the battery
- 14Check for loose connections
- 15Contact an authorized distributor/dealer for service if problem continues
Related Rehlko Fault Codes
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