Emerson Rosemount 928 Reference Manual page 164

Troubleshooting
February 2023
Recommended actions
6.2.13 LO-LO Alarm
The primary variable has surpassed the user-defined limit.
WARNING
Always respond to all indications of dangerous concentrations of toxic gas as though they
are real until they are proven false.
Recommended actions
6.2.14 Button Stuck
A button on the electronics board is detected as stuck in the active position.
Recommended actions
6.2.15 URV/LRV Out of Limits
The percentage values are beyond the allowed limits.
WARNING
Always respond to all indications of dangerous concentrations of toxic gas as though they
are real until they are proven false.
Recommended actions
6.2.16 Gas Alarm Threshold Configuration Invalid
One of several user alert configurations is invalid.
164
1. Verify the process variable is within user specified limits.
2. Reconfirm the user-defined alarm limit.
3. If not needed, disable this alert.
1. Verify the process variable is within user specified limits.
2. Reconfirm the user-defined alarm limit.
3. If not needed, disable this alert.
1. Check the buttons for obstructions.
2. Reset the device by removing and reinstallng the power module.
3. If condition persists, replace the transmitter.
1. Verify gas type and range.
2. Verify that the correct sensor is installed for the gas type and range.
3. Reconfirm sensor configuration.
4. Reset the device by removing and reinstalling the power module.
5. Replace the sensor module.
Reference Manual
00809-0100-4928
Emerson.com/Rosemount