Onan 50.0DDB-15R Series User Manual

TABLE 4
TROUBLESHOOTING ENGINE SHUTDOWN SYSTEM
(Units with five fault lamps)
SYMPTOM CORRECTIVE ACTION
1. Overcrank fault lamp lights and
engine stops cranking after
'"-^approximately 75 seconds.
•1. See engine service manual for
troubleshooting fuel system, ignition '
system, etc. After correcting fault, reset
monitor by moving run-stop/reset-remote
switch to reset position, then to either
run or remote to restart engine.
2 - Overcrank fault lamp lights
after engine has run for approxi-
mately 75 seconds.
2. Replace.start-disconnect circuit
board.
;-3. cHigh engine temperature lamp
^. Jights as soon as engine starts.
3. Check for defective sensor or-actual
high temperature condition. -
4. Low oil pressure lamp lights
after engine is running.
4. Check: .
a. Oil level - engine will shut down
after approximately 12-1/2 seconds if
oil pressure is low.
5. High engine temperature lamp
lights after engine is running.
5. Check for:
a. Defective thermostat/thermostats.
b. Low coolant level.
c. Defective high engine temperature
sensor.
6. Overspeed lamp lights - no fault
condition exists.
6. Replace overspeed circuit board.
7. Low oil pressure fault lamp ..
. lights r no fault condition
exists.
7. Be certain that no fault condition
exists. Disconnect lead 30 from TB11
inside control box (refer to wiring
diagram). If low oil pressure lamp
still lights, remove and replace
engine monitor plug-in printed
circuit board.
8. High engine temperature fault
. lamp lights - no fault
condition exists.
8. Be certain that no fault condition
exists. Remove lead 31 from TB11
inside control box (refer to wiring
diagram). If high engine temperature
lamp still lights, remove and replace
engine monitor plug-in printed circuit
board.
9. When pressing test lamp button -
one or more fault lamps do not
light.
9. Fault lamp/lamps burned out - replace.
Engine not running.
21

Onan 50.0DDB-15R Series Specifications

General

Brand	Onan
Model	50.0DDB-15R Series
Category	Portable Generator
Language	English