User's Manual

Testing, Troubleshooting, and Maintenance
8-8 CENTRON Meter Technical Reference Guide
Inspecting and Troubleshooting—General
Due to the modular architecture of the CENTRON meter, modules of similar
voltage (120V or 240V) may be interchanged. Therefore, the personality module of
the CENTRON you are troubleshooting can be placed on a known working base to
verify proper operation of the personality module. Likewise, a known working
personality module may be placed on the base of a meter to verify proper
operation of the meter.
This section provides a list of the most likely problems that you may encounter,
along with possible causes and solutions.
Blank Display
Time and Date Wrong (TOU or Load Profile Only)
No Accumulation of kWh or kW
Cause Solution
Power Not Applied to Meter Apply power.
LCD/LCD Driver Failure Replace Register Circuit Board.
Loose Power Supply Connection Remove and re-seat board-to-board connector.
Cause Solution
Time/Date Wrong in PC or Handheld device
Verify and update time/date in programming device
and download new time and date to register. See
appropriate software manual for more detailed
directions.
Wrong Line Frequency
Verify proper line frequency is selected in Setup
routine in programming software. Select proper
frequency and reconfigure meter.
Battery Failure During Power Outage Replace module.
Daylight Savings Time not Programmed
Correctly
Verify DST is selected in program. Reconfigure
meter with correct program.
Timekeeping circuitry component failure Replace module.
Cause Solution
Demand Delay Selected
kW will not immediately accumulate after a power
outage if CLPU (Demand Delay) has been selected.
Accumulation will begin immediately after Demand
Delay has expired. Verify register program and
reconfigure meter.
Module was left in Test mode
Accumulation of kW or kWh will not take place while
register is in Test mode. Exit Test mode and verify
proper accumulation begins.
Module Not Receiving Pulses
Verify that meter is accumulating energy by testing
infrared test LED.
Time-of-Use Schedule programmed
incorrectly
Verify TOU schedule contains continuous 24-hour
periods for all weekdays, weekends, or holidays. All
24-hour periods throughout every year must be
accounted for within the TOU schedule.