00-0AN
UnclassifiedCooling
What This Code Means
Excessive exhaust smoke under load; Field breaker keeps tripping; High exhaust temperature (Marine); High/Low AC output (Genset); Low AC output; High exhaust temp (Marine); High AC Output (Genset); Low AC Output (Genset); High exhaust temperature; High AC output; High AC output (Genset); Low AC output (Genset)
Possible Causes
- •Intake air restrictions
- •Overloaded generator
- •Incorrect valve settings
- •Incorrect injection pump timing
- •Incorrect AC output voltage
- •Broken or loose wires
- •Faulty exciter stator
- •Faulty reference transformer T21
- •Faulty voltage regulator
- •Improper coolant flow out of exhaust
- •Faulty exhaust temp switch
- •Damaged exhaust temp switch
- •Faulty transformer regulator
- •Incorrect engine speed
- •Incorrect voltage adjustment pot setting
- •Incorrect output lead wiring configuration
- •Faulty main stator
- •Plugged sea strainer
- •Damaged impeller
- •Faulty main rotor
Suggested Actions
- 1Check intake air restrictions
- 2Check for overloaded generator
- 3Check valve settings
- 4Check injection pump timing
- 5Check AC output voltage
- 6Check for broken or loose wires
- 7Check exciter stator
- 8Check reference transformer T21
- 9Check voltage regulator
- 10Check proper coolant flow out of exhaust
- 11Check exhaust temp switch for proper operation
- 12Check for damaged exhaust temp switch
- 13Check broken or loose wires
- 14Check transformer regulator
- 15Check engine speed
- 16Check voltage adjustment pot setting
- 17Check output lead wiring configuration
- 18Check for plugged sea strainer
- 19Check for damaged impeller
- 20Check main rotor
Related Onan Fault Codes
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