Product Manual

4-3
TABLE 1. TROUBLESHOOTING (CONT.)
Some genset service procedures present hazards that can result in severe per-
sonal injury or death. Only trained and experienced service personnel with knowledge of fuels,
electricity, and machinery hazards should perform genset service. See Safety Precautions.
WARNING
OVERCRANK FAULT—CODE NO. 4
(First-level fault code—Cranking exceeded 20 seconds without engine starting)
Corrective Action:
1. Gasoline Models − Check and fill the fuel tank, as necessary. (Note: The genset fuel pickup tube is
probably higher up in the fuel tank than the vehicle engine pickup.)
2. Prime the engine fuel system by holding the control switch at Stop/Prime for 30 seconds.
3. LPG Models − Check and fill the LPG container, as necessary. On cold days the LPG container may
have to be kept at least half full to provide the rate of vaporization necessary to keep up with the genset
fuel demand.
4. Open any closed fuel valves.
5. Secure the spark plug lead on the spark plug (Page 3-6).
6. Replace the spark plug (Page 3-6).
7. Service the air cleaner (Page 3-5).
OVERVOLTAGE FAULT—CODE NO. 12
(Controller unable to maintain rated voltage)
Corrective Action: See an authorized Onan dealer.
UNDERVOLTAGE FAULT—CODE NO. 13
(Controller unable to maintain rated voltage)
Corrective Action: Reduce the number of connected appliances, especially when air conditioners and
battery chargers are running.
OVERFREQUENCY FAULT—CODE NO. 14
(Engine governor unable to maintain rated frequency)
Corrective Action: See an authorized Onan dealer.
UNDERFREQUENCY FAULT—CODE NO. 15
(Engine governor unable to maintain rated frequency)
Corrective Action: Reduce the number of connected appliances, especially when air conditioners and
battery chargers are running.
VOLTAGE SENSE FAULT—CODE NO. 27
(Controller unable to sense output voltage)
Corrective Action: See an authorized Onan dealer.
Redistribution or publication of this document
by any means, is strictly prohibited.