Westerbeke 3.5KW SBCG-60Hz Operator's Manual page 44

SOFTWARE DIAGNOSTICS
Engine RUN State Shutdowns:
Engine RUN state is - DC circuit breaker on, generator successfully started and running
In the RUN state all shutdowns are logged and a light will be illuminated on the control panel. The generator will be
shut down and the light(s) will stay illuminated until the 12VDC power to the generator is cycled.
Oil Pressure
shutdowns illuminate the OIL PRESSURE light.
Engine Coolant Temperature
shutdowns illuminate the ENGINE TEMP light.
Exhaust Temperature High shutdown illuminates the EXHAUST TEMP light.
External Alarm
shutdown illuminates the EXT. ALARM light.
OverSpeed
and
UnderSpeed
shutdowns illuminate the pair of SPEED lights.
All other shutdowns illuminate the pair of CHECK ENGINE lights.
1
E~gine
Coolant J'emp Shorted Short circuit (0 ohms)
o
faulty temperature sensor
o
pinched or bare wire in harness
2 Engine Coolant Temp Open
. . . . . Open circuit
o
faulty ECT sensor
o
loose connection or corroded wiring
3
Engine Coolant Temp High
Reading more than
o
faulty temperature sensor
lOO°C (212°F)
o
engine heat soak after normal shutdown
4
UnderSpeed Under 1650 rpm for 8 sec
o
excessive load on generator
o
fuel
insufficient
Over 2680 rpm for 0.5 sec
OverSpeed
Over 2460 rpm for 1.0 sec • vacuum leak in intake manifold or hoses
5
Over 2530 rpm for 2;0 sec • throttle shaft sticking
Over 2420 rpm for 4.0 sec
o
loose connection or corroded wiring
6
Crank Sensor Fault
Internal ECU parameter,
o
sensor tip contaminated with metal filings
speed signal intermittent
o
crank speed sensor faulty
o
speed conditioning module faulty
o
loose connection or corroded wiring
Crank Signal Loss
No speed signal to ECU for
o
sensor tip contaminated with metal filings
7
3+ seconds
o
crank speed sensor faulty
o
speed conditioning module faulty
8
Throttle Loss of Home
Internal ECU parameter
• throttle shaft sticking
• battery weak
Oil Pressure Sender Shorted
Short circuit (0 ohms)
o
faulty oil pressure sender
9
• pinched or bare wire in harness
Oil Pressure Sender Open
Open circuit
(00
ohms)
o
faulty oil pressure sender
10
o
loose connection or corroded wiring
Reading less than 8 psi for
o
check oil level
11
Oil Pressure Low
o
insure proper oil viscosity
5 sec
o
check lubrication system for leaks
Engines & Generators
34