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HRB1684301-01 121
Chapter 14 Maintenance and upgrades
This section describes maintenance information and upgrade procedures for the meter.
Maintenance
The meter does not contain any user-serviceable parts. There are no moving parts
inside the meter that require cleaning.
• Do not open the meter. Opening the meter will void the warranty.
• Only manufacturer-authorized service personnel should service the meter.
Contact your local sales representative or Technical Support if the meter requires
servicing.
Wrench icon
The wrench icon appears on the top corner of the display screen to alert you of an
overvoltage condition or a potential hardware or firmware problem in the meter that
requires attention. It could also indicate that the energy LED is in an overrun state.
Navigate to Maint > Diag > Meter to view details of the meter status. Make note of the
information shown on the screen, then contact Technical Support.
Troubleshooting LED indicators
Abnormal heartbeat / serial communications LED behavior could mean potential
problems with the meter.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Do not attempt to service the meter. CT and PT inputs may contain hazardous
currents and voltages.
• Do not perform a dielectric (hi-pot) or Megger test on the meter. High voltage testing
of the meter may damage it.
• Before performing hi-pot or Megger testing on any equipment in which the meter is
installed, disconnect all input and output wires to the meter.
Failure to follow these instructions will result in death or serious injury.
Heartbeat / serial communications LED behavior
Problem Probable causes Possible solutions
LED flash rate does not change
when data is sent from the host
computer.
Communications wiring
If using a serial-to-RS-485 converter, trace
and check that all wiring from the computer
to the meter is properly terminated.
Internal hardware problem
Perform a hard reset: turn off control power
to the meter, then re-apply power. If the
problem persists, contact Technical
Support.
Heartbeat / serial communications
LED remains lit and does not flash
ON and OFF
Internal hardware problem
Perform a hard reset: turn off control power
to the meter, then re-apply power. If the
problem persists, contact Technical
Support.
Heartbeat / serial communications
LED flashes, but the display is
blank
Display setup parameters
incorrectly set
See “Setting up the display” on page 44.