Section 4 - Troubleshooting; Troubleshooting Guide.16 - Generac Power Systems GUARDIAN 04077-2 Owner's Manual

TROUBLESHOOTING
Section 4 — Troubleshooting
Guardian Air-cooled 6 kW, 8 kW and 10 kW Generators
4.1 TROUBLESHOOTING GUIDE
PROBLEM
CAUSE
CORRECTION
The engine will not crank.
1. Fuse blown
l. Replace fuse.
2. Loose, corroded or defective
2. Tighten, clean or replace
battery cables
as necessary.
3. Defective starter contactor
3.
*
4. Defective starter motor
4.
*
5. Dead Battery
5.
Charge or replace battery.
The engine cranks but
1. Out of fuel
1. Replenish fuel.
will not start.
2. Defective fuel solenoid (FS) 2.
*
3. Open #14 wire from
3.
*
engine control board
4. Defective spark plug(s)
4.
Clean, re-gap or replace plug(s).
The engine starts hard 1. Air cleaner
1. Check, clean or replace air cleaner.
and runs rough.
plugged or damaged
2. Defective spark plug(s)
2.
Clean, re-gap or replace plug(s).
The engine starts, but shuts
1. Engine oil level low
1. Check oil and add oil as needed.
down when the Start/Stop
2. Defective low oil 2.
*
switch is released.
pressure switch
3. Defective high temperature
3.
*
switch
4. Defective control board
4.
*
The Auto/Off/Manual switch 1. Defective switch
1.
*
is set to OFF, but the engine
2. Auto/Off/Manual switch 2.
*
continues to run.
wired incorrectly
3. Defective control board 3.
*
There is no AC output from
1. Main line circuit breaker open
1. Reset circuit breaker
the generator.
to ON (or closed).
2. Generator internal failure 2.
*
There is no transfer to
1. Defective transfer switch coil 1.
*
standby after utility 2. Defective transfer relay
2.
*
source failure.
3. Transfer relay circuit open 3.
*
4. Defective control logic board
4.
*
"•Contact your nearest Generac/Guardian Authorized Dealer for assistance.
1 B Generac* Power Systems, Inc.