Product Manual

4-4
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
HIGH BATTERY VOLTAGE FAULT—CODE NO. 29
(Voltage across battery system greater than 19 volts)
Corrective Action:
1. Check battery bank connections and reconnect if necessary so that the 12 volt batteries serving the
genset are connected in parallel (12 volt) rather than in series (24 volt).
2. Select a lower battery boost charge rate.
LOW CRANKING SPEED FAULT—CODE NO. 32
(Cranking speed less than 180 rpm for more than 2 seconds)
Corrective Action:
1. Clean and tighten the positive (+) and negative (−) battery cable connections at the battery and at the
genset.
2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations.
3. Replace engine oil with oil of proper viscosity for ambient temperatures (Page 1-3). (High oil viscosity
can slow down cranking speed.)
CONTROL CARD FAILURE FAULT—CODE NO. 35
(Microprocessor EEPROM error during self-test)
Corrective Action: See an authorized Onan dealer.
ENGINE STOPPED FAULT—CODE NO. 36
(Engine stopped without command by controller)
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. 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.
3. Secure the spark plug lead on the spark plug (Page 3-6).
4. Replace the spark plug (Page 3-6).
5. Service the air cleaner (Page 3-5).
6. Check for mechanical damage.
INVALID GENSET CONFIGURATION FAULT—CODE NO. 37
(Genset configuration is preprogrammed at the factory)
Corrective Action: See an authorized Onan dealer.
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