Onan MDKBH Series, Service Manual

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11-3
TABLE 11-1. TROUBLESHOOTING GENSET FAULTS (CONT.)
@@@@ Some genset service procedures present hazards that can result in severe personal
injury or death. Only trained and experienced service personnel with knowledge of fuels, electricity,
and machinery hazards should perform genset service. See Safety Precautions.
Accidental or remote starting can cause severe personal injury or death. Before removing a panel or
access door, disconnect the negative (–) cable from the battery to prevent the engine from starting.
WARNING
THE STARTING BATTERIES DO NOT MAINTAIN A CHARGE
Possible Cause: Marginal battery, battery connections or charging system
Corrective Action: Refer to Pages A-1 through A-3 as appropriate.
1. Service the battery as necessary by cleaning and tightening connections, recharging or replacing the
battery or replacing damaged battery cables (p. 4-2).
2. Check for and disconnect parasitic battery loads.
3. Test the battery charging regulator and replace it if necessary (p. 9-6).
NO AC POWER WHEN GENSET IS RUNNING
Possible Cause: A Circuit Breaker is OFF, tripped or malfunctioning or the generator is not connected prop-
erly
Corrective Action: Refer to Pages A-1 through A-3 as appropriate.
1. Reset or turn ON the genset circuit breaker if OFF or tripped.
2. Reset or turn ON any other circuit breaker in the AC power supply system if OFF or tripped.
3. Reconnect the generator properly for the application. See Page A-2.
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