Generac Power Systems 05176-0 owner manual Troubleshooting Guide, Problem Cause Correction

Section 6 — Troubleshooting

Air-cooled 15 kW Generators

6.1TROUBLESHOOTING GUIDE

Problem	Cause	Correction
The engine will not crank.	1. Fuse blown	1. Replace 15A fuse on generator
		control panel.

2.Loose, corroded or defective battery cables

3.Defective starter motor

4.Dead Battery

2.Tighten, clean or replace as necessary.

3.*

4.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)

5.Valve lash out of adjustment.

4.Clean, re-gap or replace plug(s).

5.Reset valve lash.

The engine starts hard	1.	Air cleaner	1.	Check, replace air cleaner.
and runs rough.		plugged or damaged
	2.	Defective spark plug(s)	2.	Clean, re-gap or replace plug(s).
	3.	Fuel regulator not set.	3.	Set fuel regulator.
	4.	Fuel pressure incorrect.	4.	Confirm fuel pressure is at 11-14”
				water column (0.4-0.5 psi) for LP,
				and 5-7” water column (0.18-0.25
				psi) for natural gas.
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 the nearest Authorized Dealer for assistance.

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