Maintenance; Fault Detection System - Briggs & Stratton 7000 Watt Automatic 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. Set control panel system switch to OFF.
3. Remove 15 Amp fuse from control panel.
4. Utility voltage is present at generator control panel.
Disconnect power before servicing control panel by
removing the fuses from the transfer switch.
5. After all servicing has been completed, replace fuses in
transfer switch, replace 15 Amp fuse in control panel,
set system switch and circuit breaker ON and reset
exercise timer. See Setting Exercise Timer in Operation.

Fault 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 panel has a digital display that shows
fault codes, like "FC_1". The table below lists the detected
fault, the fault code as displayed on the control panel.
Fault Description
Low battery voltage
Low oil pressure
Low voltage
Engine fails to start
Low frequency
Engine overspeed
High temperature
Transfer switch fault
Reset Fault Detection System
The operator must reset the fault detection system each time
it activates. To do so, place the control panel system switch
in the OFF position for 30 seconds or more. Remedy the
fault condition, then return the home generator to service by
placing the system switch in the AUTO position, installing
the 15 Amp fuse, and resetting the exercise timer. See
Setting Exercise Timer in Operation.
14
A description of each fault and suggested remedies are
as follows:
Low Battery Voltage (FC_1)
This fault is indicated by fault code FC_1. This condition
occurs if the generator cannot start because the starting
battery output power is below that needed to crank the
engine. Causes for this problem may be a faulty battery or
battery charge circuit.
To remedy the problem, contact your local service center to
check the battery charge output. Remove the 15 Amp fuse
and disconnect the battery from the generator. Take the
battery to a local battery store for analysis.
Reinstall the battery (replace if necessary - see Battery in
Final Installation Considerations in the installation manual).
Then reset the fault detection system, as described earlier.
Low Oil Pressure (FC_2)
This fault is indicated by fault code FC_2. 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 is 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 fault code will appear and
the LED will flash. In this case, contact an authorized dealer.
Fault Codes
Low Voltage (Generator, FC_3)
FC_1
This fault is indicated by fault code FC_3. This condition
FC_2
is caused by a restriction in the fuel flow, a broken or
FC_3
disconnected signal lead, a failed alternator winding, the
control panel circuit breaker is open, or the generator is
FC_4
overloaded.
FC_5
To remedy the problem, contact your installer or an
FC_6
authorized dealer.
FC_7
FC_8