Troubleshooting - Trane E50 Series Installation, Operation And Maintenance Manual

Troubleshooting

Problem
The
maintenance
wrench icon
appears in the
power meter
display.
The display is
blank after
applying.
The data
displayed is
inaccurate.
Cannot
communicate
with power
meter from a
remote
personal
computer.
32
Cause
There is a problem with the inputs
to the power meter.
The meter is not receiving adequate
power.
Incorrect setup values.
Incorrect voltage inputs.
Power meter is wired improperly.
Power meter address is incorrect.
Power meter baud rate is incorrect.
Communications lines are
improperly connected.
Solution
Refer to the Alert sub-menu or Diagnostic Alert Modbus
Register 146.
• Verify that the meter control power are receiving the
required voltage.
• Verify that the heart icon is blinking.Check the fuse.
Verify the values entered for power meter setup
parameters (CT and PT ratings, system type, etc.).
Check power meter voltage input terminals to verify
adequate voltage.
Check all CTs and PTs to verify correct connection to the
same service, PT polarity, and adequate powering.
Verify that the meter is correctly addressed.
Verify that the baud rate of the meter matches that of all
other devices on its communications link.
• Verify the terminating resistors are properly installed
on both ends of a chain of units. Units in the middle of
a chain should not have a terminator.
• Verify the power meter communications connections.
• Verify the shield ground is connected between all
units.
BAS-SVX071C-EN