LOFA
TM
MC704
Panel Operation and Troubleshooting Manual
Revision D
4 Troubleshooting
4.1 General Troubleshooting
For additional information, refer to the engine manufacturer troubleshooting guide.
No response from starter motor
No battery voltage to starter Verify wiring and battery connection (power and ground)
Battery discharged
Charge or replace battery; verify alternator charging
Tripped overcurrent protection Correct fault; replace or reset overcurrent protection
No signal from panel
No power to panel (see Panel Troubleshooting section)
Defective starter solenoid Replace starter solenoid
Defective starter motor
Replace starter motor
Engine will crank but not start
Engine not getting fuel Check fuel level, filter, fuel pump; verify no air in fuel lines
Fuel run/stop solenoid not engaged
See Fuel Run/Stop Solenoid Troubleshooting section
Tripped overcurrent protection Correct fault, replace or reset overcurrent protection
No preheat (cold condition)
See Preheat Troubleshooting section
Engine runs for 10 seconds and shuts down
Shutdown switch input active
Verify shutdown source exists; correct condition or correct faulty
circuit
Battery not charging Verify alternator charging (see Alternator not charging battery table)
Control board did not sense start
signal
Engine started through alternate method (i.e., manual air start, push
start, etc.)
Defective panel
See Panel Troubleshooting section
Engine runs longer than 10 seconds and shuts down
Shutdown switch input active Correct engine fault; verify shutdown switch wiring
Circuit overload protection tripped
Correct overload; keep panel from overheating (over 185°F/85°C)
Voltage transients (spikes)
Add suppressor diodes; protect from nearby lightning strikes; shield
induced spikes from other equipment; add electric motor control
relay push start, etc.
Defective panel
See Panel Troubleshooting section
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