Emerson Rosemount 3144P Reference Manual page 72

HART Commissioning
December 2019
LCD display message
The LCD display on the transmitter will display a message HOT BU SNSR 1 FAIL; WARN AV
DEGRA as well as the output of the average temperature. Because Sensor 1 has failed, this
average temperature output is the value of Sensor 2 only.
After the sensor has been repaired or replaced, the LCD display on the transmitter will
display a message WARN HOT BU, reminding you that Hot Backup is still active, as well as
the normal output of the average temperature. The warning message will clear after you
have reset Hot Backup. It is recommended that Hot Backup be reset immediately after
repairing or replacing the damaged sensor. See
72
Reset Hot Backup: Fast Keys
Reference Manual
00809-0100-4021
2-2-4-1-4.
Rosemount 3144P