Briggs & Stratton 6404, Installation And Operation Manual

Page: 57 / 180

57
Troubleshooting
Problem Cause Correction
Eng ine is running, but no AC output
is available.
1. Circuit breaker open or defective.
2. Service code in generator control board.
3. Poor wiring connections or defective transfer
switch.
1. Reset or replace circuit breaker.
2. Contact local service facility.
3. Check and repair or contact local service
facility.
Eng ine runs well at no-load but “bogs down”
when loads are connected.
1. Generator is overloaded.
2. Short circuit in a connected load.
3. Shorted generator circuit.
4. Fuel pressure or mixture is incorrect.
5. Kinked fuel line between regulator and
engine.
6. Clogged air filter.
1. Remove one or more loads.
2. Disconnect shorted electrical load.
3. Contact local service facility.
4. See
Gaseous Fuel System in the
installation manual.
5. Remove kink. Replace if necessary.
6. Remove clog. Replace if necessary.
Eng ine will not start; or starts and runs rough.
1. 15 Amp fuse missing or blown.
2. Thermal fuse(s) blown.
3. Fuel supply turned off or depleted.
4. Incorrect fuel selection.
5. Failed battery.
6. Clogged air filter.
1. Install (new) 15 Amp fuse. See System
Control Board
2. Replace thermal fuse(s).
3. Open fuel valve(s); check propane tank.
4. Check fuel selector switch and set to
proper setting. (If applicable)
5. Replace battery.
6. Clean or replace air filter.
Engine shuts down during operation.
1. Fuel supply turned off or depleted.
2. Control board digital display shows a service
code.
1. Check fuel valves, fill propane tank.
2. Refer to
Service code Detection System .
Loss of power on circuits.
1. Generator circuit breaker is open.
2. Transfer switch problems. 1. Reset circuit breaker.
2. See transfer switch manual.
Unit will not exercise.
1. Control board not set to AUTO.
2. Exercise timer not set or set to OFF.
3. Unit date and time not set.
4. Failed battery.
5. 15 Amp fuse missing or blown. 1. Press AUTO button on control board.
2. Set exercise timer.
3. Set unit date and time.
4. Replace battery.
5
. Install (new) 15 Amp fuse. See System
Control Board.
Excessive Vibration
1. Loose mechanical fastener. 1. Check and repair or contact local service
facility.
Odor of fuel
1. Fuel leak. 1. Turn off manual shutoff fuel valve.
Contact local service facility.
Utility power returns, unit does not stop
1. Blown fuses in transfer switch.
2. 5 minute minimum runtime not lapsed.
3. Poor wire connection or defective controllers. 1. Install (new) fuses.
2. Wait 5 minutes.
3. Check, repair or contact local service
facility.
Not for
Reproduction