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Generac Power Systems PRIMEPACT 50 04164-3 Owner's Manual: Section 4 - Troubleshooting; Troubleshooting Guide

Air-cooled recreational vehicle generators.
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TROUBLESHOOTING GUIDE
Problem
The engine will not crank.
The engine cranks but
will not start.
The engine starts hard
and runs rough.
The engine starts, but shuts
down when the Start/Stop
switch is released.
The Start/Stop switch is
set to Stop, but the engine
continues to run.
There is no AC output from
the generator.
Cause
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. 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. Air cleaner
plugged or damaged
2. Defective spark plug(s)
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. 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. 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
Section 4 – Troubleshooting
Recreational Vehicle Generator
Correction
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.
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.
1. Check, clean or replace air cleaner.
2. Clean, re-gap or replace plug(s).
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.
1. Replace switch.
2. Reconnect or close wire.
3. Reconnect or close wire.
4. Replace control board.
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
two (2) seconds).
5. Contact an Authorized Service Dealer.
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