Onan 200 DFP - Troubleshooting

Troubleshooting
The generator set has a number of sensor units (Figure
4) that continuously monitor the engine for abnormal
conditions such as low oil pressure or high coolant
temperature. If an abnormal condition does occur, the
engine monitor will activate a fault lamp and may also
stop the engine depending on the condition. If the
generator set does shut down, the operator rnay be able
to restart the set after making certain adjustments or
corrections. This section describes the operation of the
fault condition system and suggested troubleshooting
{Table 2) procedures for the operator.
The standard two light control has a single green light to
indicate Run and a single fault light to indicate malfunc¬
tions. The optional 12 light control has a single green
Run light, 4 amber pre-fault lights, and 7 red fault lights.
Both controls also have a terminal connection for an
external audible alarm which will sound when a fault
occurs.
Safety Considerations
High voltages are present within the control box and
generator output box when the generator is running. Do
not open the control box or generator output box while
set is running.
~A WARNIMP Contacting high voltage components
ikWAn N I F MU can catl§e serious personal injury or
death. Keep control and output box covers in place
during troubleshooting ,
Generator set installations are normally designed for
automatic starting or remote starting. When trouble¬
shooting a set that is shut down, make certain the
WATER TEMPERATURE MONITORS
HIGH ENGINE
TEMPERATURE
SWITCH
PRE-HIGH
ENGINE
TEMPERATURE
SWITCH
generator set cannot be accidentally restarted. Place
the Run/Stop/Remote switch in the STOP position and
remove? the negative battery cable from the set starting
battery.
rAv^APKiiAjr'l Accidental starting of the generator
se f during troubleshooting can
cause severe personal injury or death. Disable the
generator set before troubleshooting .
When a fault comes on during operation, follow the
procedures in Table 2 to locate and correct the problem.
For any symptom not listed, contact an Onan Distributor
for service.
Resetting the Control
The externa! alarm and fault lamp can be deactivated by
placing the Run/Stop/Remote switch in the Stop posi¬
tion and pressing the Reset/Lamp Test switch. Locate
the problem and make the necessary corrections before
restarting the generator sec While pressing the Reset/
,. amp Test switch, observe that all lamps light.
Line Circuit Breaker (Optional)
The optional line circuit breaker mounts on the genera¬
tor output box. If the load exceeds the generator current
rating, the line circuit breaker will open to prevent the
generator from being overloaded. If the circuit breaker
trips, locate the source of the overload and correct as
required. Manually reset the breaker to reconnect the
load to the generator.
OIL PRESSURE MONITORS
FIGURE 4. ENGINE SENSORS
CS-1310