Product Manual

4-2
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
STARTING BATTERIES RUN DOWN
(Marginal batteries, connections, or charging system or, parasitic loads)
Corrective Action:
1. Clean and tighten the positive (+) and negative (−) battery cable connections at the battery, vehicle
frame and genset.
2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations.
3. Have a battery charging system installed or serviced in the vehicle.
STARTER ENGAGES-DISENGAGES
(Cranking voltage dips below 6 volts—low battery charge, poor connections, long cables)
Corrective Action:
1. Have the vehicle propulsion engine running while trying to start the genset—the battery charging alter-
nator may be able to maintain starting voltage high enough to get the genset started.
2. Clean and tighten the positive (+) and negative (−) battery cable connections at the battery, vehicle
frame and genset.
3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations.
4. Increase battery cable size or run parallel cables.
STATUS INDICATOR LIGHT GOES OUT WHILE CRANKING—NO START
(Internal short circuit caused automatic-reset circuit protective device to trip)
Corrective Action: Try starting again. See an authorized Onan dealer if the status indicator light
flashes and then goes out again without the engine starting.
NO POWER—GENSET RUNNING, STATUS LIGHT ON
(Line circuit breaker OFF, or tripped due to short circuit or overload)
Corrective Action:
1. Turn on or reset the line circuit breaker on the genset (Page 2-3).
2. Turn on or reset the line circuit breakers on the main distribution panel in the vehicle.
SERVICE CHECK FAULT—CODE NO. 3
(First-level fault code—Indicates fault with second-level fault code)
Corrective Action: Check the second-level fault code by pressing STOP once. The second-level fault
code will have two-digits. The faults are listed in numerical order in this table.
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