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Reference Manual
00809-0100-4840, Rev CB
Section 5: Service and Troubleshooting
February 2015
Service and Troubleshooting
the output will increase to the current selected level and the display flashes alternately “LE” and
the last valid level reading.
If a satisfactory echo is received within the 10 seconds, a new output is established and the LE
timer is re-set.
5.4 Diagnostics for the 3102 and the 3105
Menu structures for this section are in Appendix C: Integrated Display Menus.
If using a HART Master Device for programming the 3102 or the 3105, refer to the following
sections for menu structures and parameters:
Appendix D: Rosemount 3490 Series Menus
Appendix E: Field Communicator Menus
Appendix F: Programming the 3102 and 3105 using HART
5.4.1 General troubleshooting (on the 3102/3105)
No display
Check the power supply. Ensure there is a minimum of 12 Vdc at the instrument terminals.
Check that the cable insulation is not preventing contact at the terminal block.
No level reading
Check that the instrument is ticking about once per second. If there is no ticking, the instrument
should be replaced.
5.4.2 Fault and alarms (on the 3102/3105)
Table 5-1. Fault and alarm indication methods
Condition
(1)
(1) Condition descriptions are abbreviated on the display.
Alarm or Fault Current Output Relay (3102)
Temperature out of limits Alarm
(2)
(2) These faults and alarms are displayed alternatively with the PV.
No No
Field device malfunction Fault
(3)
(3) This fault is not displayed.
Yes Yes
ROM checksum error Fault
(2)
Yes Yes
EEPROM signature failure Fault
(2)
Yes Yes
EEPROM checksum error Fault
(2)
Yes Yes
RAM test failure Fault
(2)
Yes Yes
Lost echo Fault
(2)
Yes
(4)
(4) The current output action can be user-selected for a lost echo condition only.
Yes
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