GE Entelli-Switch 250 manual Troubleshooting and Diagnostics, General Troubleshooting

Troubleshooting and Diagnostics

DANGER

HAZARDOUS VOLTAGES CAN CAUSE SEVERE INJURY OR DEATH.

These charts may indicate problems that require authorized GE Zenith service personnel.

Hazardous voltages may exist on termination plugs other than those that go into the Entelli-Switch 250.

General Troubleshooting

The following troubleshooting guide is used to recognize, and determine basic faults. When using this guide, it will ask several questions about the condition of the switch.

This guide will then list an order of the possible faults. You will then look at the first suspected fault to determine if it is the problem. If it is not a fault, you go to the

second suspected fault. If you go through all of the suspected faults, or the chart instructs you to, call a GE Zenith Representative for further assistance.

NOTE: When you use the troubleshooting charts, the Annunciation column refers to the LED’s on the control panel.

Symptom	Annunciation		Possible Cause(s)	Corrective Action
Engine does not START	SOURCE 2		Engine start wires not	Check engine start connections
	AVAILABLE		terminated properly
	LED off
			Generator is in OFF position	Investigate why Engine Control
				Switch was turned off
Engine does not stop	LCD Display -		U timing cycle not complete	Check U timer setting
	“TD Engine Cool Down”
	SOURCE 1 POSITION, and		Engine start wires not	Check Engine Start Connections
	SOURCE 1 and SOURCE 2		terminated correctly
	AVAILABLE LEDs on,
			Generator in MANUAL	Place generator in AUTO
	but U timer has timed out
ATS will not transfer	SOURCE 2 AVAILABLE		SOURCE 2 voltage or frequency	Check: Engine Start Connections,
to SOURCE 2	LED off		not within acceptable parameters	Generator Breaker, Generator Output,
				and Engine Control Switch
ZTG Series
	None		Power supply connector unplugged	Plug in connector
	LCD Display -		W timing cycle not complete	Check W Timer setting
	“S1 _ _ _ _ TD XFR S1>S2
	Time Remaining _ _ _ _”
ATS will not transfer	LCD Display -	DW timing cycle not complete		Check DW Timer setting
to SOURCE 1	“ATS Open
	Time Remaining _ _ _ _”
ZTGD Series
	SOURCE 1 AVAILABLE		SOURCE 1 voltage or frequency	Check utility and utility breakers
	LED off		not within acceptable parameters
	None		Power supply connector unplugged	Plug in connector
	LCD Display -	Limit switch or RT box		Call Technical Services
	“Diagnostic Code 001”	connector unplugged
	LCD Display -	T timing cycle not complete		Check T Timer setting
	“S1 OK
	Time Remaining _ _ _ _
	Bypass”
	LCD Display -	TD timing cycle not complete		Check DT Timer setting
	“ATS Open
	Time Remaining _ _ _ _”
				Table 4

■ GE Zenith Controls Entelli-Switch 250 Operation and Maintenance Manual (71R-2000) 29 ■