User guide

LI25 Series Loop-Powered Meters Instruction Manual
36
TROUBLESHOOTING
The rugged design and the user-friendly interface of the meter should
make it unusual for the installer or operator to refer to this section of the
manual.
If the meter is not working as expected, refer to the recommendations
below.
Troubleshooting Tips
Symptom Check/Action
No display or faint display
1. Check connections.
2. Increase contrast setting in
Advanced menu.
3. Perform hard reset by temporarily
shorting S+ and S- terminals for a
few seconds.
Rate display unsteady
Increase filter setting in
Advanced
menu.
Not able to change setup or
programming,
Locd is displayed
Meter is locked, enter correct five-digit
password to unlock.
Meter displays error message
during calibration (
error)
Check:
1. Signal connections
2. Minimum input span requirements
Meter displays
• 99999
• -99999
Check:
1. Input signal within range.
2. When using square root or
programmable exponent, cutoff
must be zero or greater.
Display stuck showing a number
and
MAX or MIN
Press
Menu to exit Max/Min
display readings.
Display response is too slow
Check filter and bypass values to see if
they can be lowered.
If the display locks up or the meter
does not respond at all
Perform hard reset by temporarily
shorting S+ and S- terminals for a few
seconds and then removing short.
Display shows blurry, hard-to-read
digits in below freezing
temperatures (less than -18°C or
0°F).
Increase the filter setting to 10 or
greater and the bypass setting to 50 or
greater. This will slow the display
response rate, but digits will be steady
and appear more clearly.
Other symptoms not described
above
Call Technical Support for
assistance.