F2
UnclassifiedCooling
What This Code Means
Field Overload; Speed Sense Fault; Controller does not sense quadrature frequency and voltage; External Coolant Loss; Coolant in oil; Engine Unstable; Genset Hunts; Genset Surges
Possible Causes
- •Cracked or leaking hoses
- •Excessive load
- •Fuel lines leaking
- •Leaks or defects in radiator
- •Loose clamps
- •Loose wiring connections
- •Open, short, or ground in rotor/stator windings
Suggested Actions
- 1Check F2 Fuse
- 2Check K2 relay and connections
- 3Check control
- 4Check for leaking fuel lines
- 5Check for loose wiring connections
- 6Check fuel supply
- 7Check loads for proper operation
- 8Check rotor/stator windings for opens/shorts/grounds
- 9Check starter circuits
- 10Operate and check for leaks
- 11Pressure test coolant system
- 12Visually check coolant level
- 13Visually check for coolant in oil
- 14Visually check for cracked or leaking hoses
- 15Visually check for leaks or defects in radiator
- 16Visually check for loose clamps
Related Onan Fault Codes
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