TP-6694 7/18
TP-6694 7/18 81Section 4 Troubleshooting
4.2 Controller Display and Voltage Regulation Troubleshooting Chart
Trouble Symptoms
Probable Causes Recommended Actions
Section or
Publication
Reference*
Controller Display and Voltage Regulator
Displayisblack No/low battery charge Recharge/replace battery Section 3, Battery
Display shows single segment Low battery voltage Recharge battery Section 3, Battery
Display shows an error message Controller firmware or pushbutton/
rotary selector dial entry error
Review the Error Message Section Section 2.7.1
Display locks up No/low battery charge Recharge/replace battery Section 3, Battery
Output voltage ramps Defective exciter winding
Troubleshoot alternator components [
Generator Service
Manual
Output voltage unstable Voltage regulation calibration incorrect
Readjust voltage regulation [
Section 1.3.3,
SiteTech O/M
Unable to change voltage and current calibrations Calibration not enabled Enable calibration in Generator Metering section Section 1.2.3
Digital Display,
Section 2.6.4
Unable to find volt select menu Volt select not enabled Enable volt select in SiteTech SiteTech O/M
* Sec./Section—numbered section of this manual; ATS—Automatic Transfer Switch; Eng.—Engine; Gen.—Generator Set; I/M—Installation Manual; O/M—Operation Manual;
S/M—Service Manual; S/S—Spec Sheet; W/D—Wiring Diagram Manual
[ Have an authorized service distributor/dealer perform this service.
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