Maintenance; Service Code Detection System - Briggs & Stratton 40375 Operator's Manual

Maintenance

Servicing the System
Before performing any generator maintenance, always
perform the following steps:
1. Set generator's circuit breaker to its OFF position.
2. Capture any service code display information displayed
on the control board.
3. Press and hold the control board OFF button.
4. Remove 15 Amp fuse from control board.
5. Utility voltage is present at generator control board.
Disconnect power before servicing control board by
removing the fuses from the transfer switch.
6. After all servicing has been completed, replace fuses in
transfer switch, replace 15 Amp fuse in control board,
set circuit breaker ON and press and hold control board
AUTO button.

Service Code Detection System

The generator may have to run for long periods of time
with no operator present. For that reason, the system is
equipped with sensors that automatically shut down the
generator in the event of potentially damaging conditions,
such as low oil pressure, high temperature, over speed, and
other conditions.
The generator's control board shows service code
descriptions scrolling across the digital display. The service
code descriptions are listed below:
Reset Service Code Detection System
The operator must reset the service code detection system
each time it activates. To do so, press the control board
OFF button for 5 seconds. Once the display turns off, leave
it off for at least 30 seconds. Remedy the service condition,
then return the home generator to service by pressing and
holding the control board AUTO button and installing the 15
Amp fuse (if removed).
Low Battery Voltage
This service code is indicated by Low Battery Voltage
scrolling across the digital display. This condition occurs if
the battery voltage drops below the preset value. Causes for
this problem may be an inoperative battery or battery charge
circuit. See Battery Charge Circuit.
Remove the 15 Amp fuse and disconnect the battery from
the generator. Test the battery voltage. If voltage meets
specifications, take the battery to a local battery store for
analysis. Or contact your local service center for assistance.
Reinstall the battery (replace if necessary - see Battery in
Final Installation Considerations in the installation manual).
Then reset the service code detection system, as described
earlier.
Low Oil Pressure
This service code is indicated by Low Oil Pressure scrolling
across the digital display. The unit is equipped with an oil
pressure switch that uses normally closed contacts held
open by engine oil pressure during operation. Should oil
pressure drop below the 8 psi range, switch contacts close
and the engine will shut down.
To remedy the low oil pressure condition, add the
recommended oil to the FULL mark on the dipstick.
If the low oil pressure condition still exists, the engine will
start, then shut down again. The service code code will
appear again. In this case, contact an authorized dealer.
Under Voltage
This service code is indicated by Under Voltage scrolling
across the digital display. This condition is caused by
a restriction in the fuel flow, the electronic governing
system not functioning properly, a broken or disconnected
signal lead, a failed alternator winding or the generator is
overloaded.
To remedy the problem, contact your installer or an
authorized dealer.
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