
Potential cause
The platinum pad has broken free from the back of the cell.
Recommended action
Replace the cell and flange assembly per
Fault 10, LOI
When Fault 10 is detected, the LOI displays the
O2 Cell Open
message.
Figure 8-19: O2 Cell Open Message on LOI
Recommended actions
1. Remove power. Unscrew and remove the LOI module from the electronic assembly.
2. Reconnect power to the transmitter.
3. Perform the Recommended actions in
8.5.11
Fault 11, Bad Cell
Fault 11, membrane keypad
When Fault 11 is detected, the
O2 CELL
LED flashes three times, pauses for threee
seconds, and repeats.
Potential cause
The bad cell alarm activates when the cell exceeds the maximum resistance value.
Troubleshoot
Reference Manual
October 2019
00809-0100-4340
136
Emerson.com/Rosemount
Summary of Contents for Rosemount Oxymitter 4000
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