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_&
Stra_on
Service &
Troubleshooting
Guide - Home Generator
Systems
'_
Model
1938 (10kW)
Troubleshooting
Check
Ignition
Spark:
• Turn off the manual fuel valve that is located on the
outside of the building.
• Refer to the Briggs & Stratton
Engine Service Manual to
determine
the proper
method for checking the engine
for ignition spark.
Engine Fails to Crank:
Check the 15 Amp fuse.
• Remove the control
panel door
• Inspect 15 Amp fuse, reinstall or replace.
•• If fuse was replaced, reset LED:
• Place the AUTO/OFF/MANUAL
switch in the OFF
position for 30 seconds or more.
• Attempt
MANUAL
start and observe system
operation.
.,. If the fuse is OK:
Check the starter contactor.
• OPEN
the generator
circuit breaker.
• Reset LED.
• Gain access to the starter contactor
by removing the
battery door.
Select the MANUAL
position of the AUTO/OFF/MANUAL
switch and while the engine start cycle is in progress:
• Measure for a voltage at the coil terminals of the
starter contactor,
as shown in figure 24.
NOTE:
Remember that the CMA only delivers
12VDC to the starter contactor
for 15 seconds and
then rests for 15 seconds.
• . If no voltage is present at the coil terminals
of the starter
contactor_
Gain access to the CMA circuit board by removing the air
intake door and the CMA safety panel (Page 15, Figure 8).
• Measure the voltage at Pin #5, Wire #56 to ground, as
shown in figure 25.
_!
_ should be measured while cranking.
Verify
Ground
connection
onCMA
circuit
board.
I
(See
Figure
27)]
• • If no voltage is measured:
• Replace the CMA circuit board.
• . If 9-14VDC
is present at the starter contactor:
• Measure the voltage at the starter, as shown in
figure 26.
I_7-14VDC
.................................................
should be measured.
28
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