Section 5 - Troubleshooting - Generac Power Systems Automatic Standby Generator Owner's Manual

Section 5
Problem
The engine will not crank.
The engine cranks but
will not start.
The engine starts hard
and runs rough.
The generator is set to OFF,
but the engine continues to
run.
There is no AC output from
the generator.
There is no transfer to
standby after utility
source failure.
Unit consumes large
amounts of oil.
*Contact an Authorized Service Dealer for assistance.
Automatic Standby Generator Owner's Manual
Troubleshooting
Cause
1. Fuse blown.
2. Loose, corroded or defective
battery cables.
3. Defective starter contact.
4. Defective starter motor.
5. Dead Battery.
1. Out of fuel.
2. Defective fuel solenoid (FS).
3. Defective spark plug(s).
4. Valve lash out of adjustment.
1. Air cleaner plugged
or damaged.
2. Defective spark plug(s).
3. Fuel pressure incorrect.
4. Fuel selector in wrong position.
1. Controller wired incorrectly.
2. Defective control board
1. Main line circuit breaker is in
the OFF (or OPEN) position.
2. Generator internal failure.
1. Main line circuit breaker is in the OFF
(or OPEN) position.
3. Defective transfer switch coil.
4. Defective transfer relay
5. Transfer relay circuit open.
5. Defective control logic board.
1. Engine over filled with oil.
2. Engine breather defective.
3. Improper type or viscosity of oil.
4. Damaged gasket, seal or hose.
Correction
1. Correct short circuit condition by
replacing 7.5 Amp fuse in generator
control panel.
2. Tighten, clean or replace
as necessary.*
3. *See #2.
4. *See #2.
5. Charge or replace battery.
1. Replenish fuel/Turn on fuel valve.
2. *
3. Clean, re-gap or replace plug(s).
4. Reset valve lash.
1. Check/replace air cleaner.
2. Clean, re-gap or replace plug(s).
3. Confirm fuel pressure to regulator
is 10-12" water column (19-22 mm
mercury) for LP, and 3.5-7" water
column (7-13 mm mercury) for
natural gas.
4. Move selector to correct position.
1. Repair wiring or replace controller*
2. Replace controller.
1. Reset circuit breaker
to ON (or CLOSED).
2. *
1. Reset circuit breaker to ON
(or CLOSED) position.
3. *
4. *
5. *
5. *
1. Adjust oil to proper level.
2. *
3. See "Engine Oil Recommendations".
4. Check for oil leaks.
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