(Fault Code_3) Low Output Voltage - Briggs & Stratton 076000NG Service & Troubleshooting Manual

(FC_3)
LOW OUTPUT VOLTAGE
The low voltage shutdown feature is designed to
protect the generator and its loads from an
output voltage that is too low. When the
generator has stabalized, the system control
panel senses output voltage on Pins #J8 and
#J9 and on Wires #L1 and #L2.
SEE WIRING DIAGRAM ON PAGE 61.
If the system contol panel does not sense the
2
proper generator voltage, it will shut down the
unit.
The digital display will show FC_3 and the
remote LED will repeatedly flash three times with
a pause.
Low output voltage may be caused by:
• An open control panel circuit breaker
• A generator that is overloaded
• A restriction in the fuel flow
• A broken or disconnected signal lead
(L1 or L2)
• Diminished engine power
• A failed alternator winding
• Open wiring
WARNING
Battery posts, terminals, and related
accessories contain lead and lead
components, chemicals known to the State
of California to cause cancer and
reproductive harm. Wash hands after
handling.
Utility voltage is present at the system
control panel board.
Use caution to avoid personal electrical shock
or damage to the system.
34
WARNING
TEST 1 - Measure Circuit Breaker Load-Side
Voltage
1. Remove the cover from the generator
circuit breaker.
SEE TESTING MANUAL OPERATION (NO LOAD)
ON PAGE 52.
2. Reset the fault code detection system.
SEE RESETTING THE FAULT CODE DETECTION
SYSTEM 19.
3. Ensure that the generator circuit breaker is
ON and the 15 Amp control panel fuse is
installed .
4. Turn the SYSTEM switch to AUTO, then
push and hold the MANUAL OVER-RIDE
button to start the generator.
5. When the unit has stabalized, check for
240VAC at the load side of the circuit
breaker (Figure 23).
Figure 23
• If the specified voltage is present,
proceed to TEST 2 - Measure
Generator Voltage at System
Control Panel.
• If specified voltage is not present,
proceed to TEST 3 - Measure Circuit
Breaker Line-Side Voltage.
TEST 2 - Measure Generator Voltage at
System Control Panel
1. Remove control panel cover to gain
access to the system control panel.
SEE HOW TO ACCESS THE SYSTEM CONTROL
PANEL ON PAGE 17.
2. With the unit running, measure for
240VAC at system control panel
Pins J8 and J9 and Wires # L1 and L2
(Figure 24).