TP-6734 5/1042 Section 4 Troubleshooting
Problem Possible Cause Corrective Action
Controller LED
displayisoff.
Controller is OFF (check the OFF LED) Press RUN to start the generator set or AUTO for
automatic operation.
Controller fuse (F3) is blown. Replace the fuse. If the fuse blows again, contact
an authorized distributor/dealer.
Low or no battery voltage. Check battery connections.
Check the engine starting battery and battery
charger. See Figure 4-3.
The generator set
does not crank.
Fault shutdown Check for a fault code on the controller display. See
Section 2.9.
Battery weak or dead Check power to the battery charger. See
Figure 4-3.
Recharge or replace the battery.
Battery charger fuse blown Replace the fuse. Contact an authorized distributor/
dealer for service if fuse blows repeatedly.
Battery connections reversed or poor Check battery connections.
Fuse F2 blown Replace the fuse. Contact an authorized distributor/
dealer for service if fuse blows repeatedly.
Fuse F3 blown Replace the fuse. Contact an authorized distributor/
dealer for service if fuse blows repeatedly.
Controller is OFF (check the OFF LED) Press AUTO for remote start or RUN for local start.
The generator set
cranks but does not
start, starts hard,
lacks power, or
operates erratically.
Air cleaner clogged Clean and/or replace the air cleaner.
Battery weak or dead Check power to the battery charger.
Recharge or replace the battery.
Battery connection poor Clean and tighten the battery connections.
Spark plug wire connection loose Check the spark plug wires.
Low oil pressure shutdown Check the oil level.
Fuel pressure insufficient Check the fuel supply and valves.
Engine malfunction Contact an authorized distributor/dealer.
No AC output.
AC circuit breaker in the OFF position Place the circuit breaker in the ON position.
AC circuit breaker tripping because of overload Reduce the load on the generator set.
AC circuit breaker tripping because of short
circuit
Contact an authorized distributor/dealer for service.
Auxiliary winding circuit breaker tripped Reset the circuit breaker. See Figure 4-1. Contact
an authorized distributor/ dealer for service if circuit
breaker trips repeatedly.
Low output or
excessive drop in
voltage.
Generator set overloaded Reduce the load.
Generator set stops
suddenly.
Low oil pressure shutdown Check the oil level. Check for signs of oil leaks.
No fuel Check fuel supply. Contact fuel supplier.
Overcrank shutdown Reset the controller. If the overcrank fault occurs
again, contact an authorized distributor/dealer.
Controller fuse (F3) blown Replace the fuse. If the fuse blows again, contact
an authorized distributor/dealer.
Overspeed shutdown Reset the controller. If the overspeed fault occurs
again, contact an authorized distributor/dealer.
Generator set master switch in the OFF/RESET
position
Move the switch to the correct position (RUN or
AUTO).
Remote stop command received from a remote
switch or ATS
Check the remote switch position.
Engine malfunction Contact an authorized distributor/dealer.
Auxiliary winding circuit breaker tripped Reset the circuit breaker. See Figure 4-1. Contact
an authorized distributor/dealer for service if circuit
breaker trips repeatedly.
Figure 4-2 General Troubleshooting Chart
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