Emerson Rosemount5081, Instruction Manual, Page: 78 / 152

Troubleshooting WritE Err
Check the position of jumper JP1 on the CPU board. If the jumper is hanging off one of the
pins, place it across both pins. If the jumper is missing entirely, use jumper JP3 (50/60 Hz),
which is not a critical jumper.
There are similar numbered jumpers on the analog board. The
jumper to be checked is on the CPU board, which is the center board in the stack. Turn the
power to the transmitter off and then back on.
• Toggling the power should cause the message to disappear.
• If the message does not disappear, replace the electronic board stack.
FACt FAIL error message
FACt FAIL means the unit has not been factory calibrated. Call the factory. The transmitter
will probably need to be returned to the factory for calibration.
8.1.5 Troubleshooting when no diagnostic message is
showing
If no diagnostic message is showing, locate the symptom(s) in the table below and refer to
the appropriate section for assistance.
Symptom Section
Id000 appears in display when trying to program
or calibrate transmitter
Id000 in display
Error message flashing in display Section 8.1.4
Transmitter does not respond to remote con-
troller Transmitter not responding to IRC
Calibration problems
SLOPE Err HI or SLOPE Err LO appears after calibra-
tion attempt
SLOPE Err LO or SLOPE Err Hi appear after calibra-
tion attempt
bF1 or bF2 continuously flashes during auto cali-
bration
bF1 or bF2 continuously flashes during auto cali-
bration
pH reading in buffer drifts during manual cali-
bration pH reading in buffer drifts during manual calibra-
tion
Measurement problems
Sensor does not respond to known pH changes Sensor not responding to pH changes
Buffer calibration is acceptable; process pH is
slightly different from expected value Buffer calibration is acceptable; process pH is
slightly different from expected value
Buffer calibration is acceptable; process pH is
grossly wrong and/or readings are noisy Buffer calibration is acceptable; process pH is
grossly different from expected value
Temperature reading is inaccurate Temperature reading is inaccurate
Transmitter problems
No display No display
Diagnostics and troubleshooting
68 Rosemount 5081