Generac Power Systems 00862-2 User Manual
Page 37
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Section 4 - Troubleshooting
Series QP55-G Recreational Vehicle Generator
TROUBLESHOOTING
4.2 TROUBLESHOOTING GUIDE
PROBLEM
CAUSE
CORRECTION
The engine will not crank.
1. Fuse blown
2. Loose, corroded or defective
battery cables
3. Defective engine Start/Stop
switch
4. Defective starter contactor
5. Defective starter motor
6.
Low or defective battery
1.
Replace fuse.
2.
Tighten, clean or replace
as necessary.
3. Replace Start/Stop switch.
4.
Replace contactor.
5.
Replace starter motor.
6. Charge or replace battery.
The engine cranks but
will not start.
1. Out of fuel
2. Defective fuel pump
3. Open #14 wire from
engine control board
4. Flooded engine
5. Defective spark plug(s)
6. Fuel line shut-off closed
7. Plugged fuel filter
1. Replenish fuel.
2.
Replace fuel pump.
3.
Check connections and.
insulation of #14 wires.
4.
Wait 5-10 minutes before trying.
5.
Clean, re-gap or replace plug(s).
6.
Open fuel line shut-off.
7.
Clean or replace fuel filter.
The engine starts hard
and runs rough.
1.
Air cleaner
plugged or damaged
2.
Defective spark plug(s)
1.
Check, clean or replace air cleaner.
2.
Clean, re-gap or replace plug(s).
The engine starts, but shuts
down when the Start/Stop
switch is released.
1
.
Engine oil level low
2.
Defective low oil
pressure switch
3.
Defective high temperature
switch
4.
Defective engine control board
5.
Overheated engine
1.
Check oil and add oil as needed.
2.
Replace pressure switch.
3.
Replace temperature switch.
4.
Replace control board.
5.
Check that the airflow
openings are adequate.
The Start/Stop switch is
set to Stop, but the engine
continues to run.
1.
Defective Start/Stop switch
2.
Open/Disconnected #18 wire
between Start/Stop switch
and engine control board
3.
Open/Disconnected #0 wire
between Start/Stop switch
and engine control board
4.
Defective engine control board
1. Replace switch.
2. Reconnect or close wire.
3. Reconnect or close wire.
4. Replace control board.
There is no AC output from
the generator.
1. Main line circuit breaker open
2. Fault with vehicle circuit
breaker and/or fuses
3. Transfer switch set to NORMAL
4. Start switch not held long
enough to flash the field
5. Generator internal failure
1. Reset circuit breaker
to ON (or closed).
2. Reset and replace if necessary.
3. Set switch to GENERATOR.
4. Stop, then restart the engine
(Hold Start switch for at least
2 seconds).
5. Contact a Generac Authorized
Service Dealer.
Generao* Power Systems, Inc. 3S