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Status LED statesTable 10-1:
LED behavior Alarm condition Description
Solid green No alarm Normal operation
Flashing yellow No alarm Zero calibration procedure is in progress
Solid yellow Low-severity alarm Alarm condition that will not cause measure-
ment error (outputs continue to report proc-
ess data)
Solid red High-severity alarm Alarm condition that will cause measurement
error (outputs in fault)
10.2 Status alarms
Status alarms and recommended actionsTable 10-2:
Alarm code Description Cause Recommended actions
A001 EEPROM Error (Core
Processor)
An uncorrectable
checksum mismatch
has been detected.
• Cycle power to the meter.
• Contact Micro Motion.
A002 RAM Error (Core Pro-
cessor)
ROM checksum error or
a RAM location cannot
be written to.
• Cycle power to the meter.
• Contact Micro Motion.
A003 No Sensor Response Continuity failure of
drive circuit, LPO, or
RPO, or LPO-RPO mis-
match when driving.
• Check the drive gain and the pickoff voltage.
See Section 10.26 and Section 10.27.
• Check the wiring between the sensor and
transmitter. See Section 10.10.
• Check for electrical shorts. See Section 10.28.
• Check the integrity of the sensor tubes.
A004 Temperature Over-
range
Combination of A016
and A017.
• Check the sensor wiring. See Section 10.28.1.
• Check the wiring between the sensor and
transmitter. See Section 10.10.
• Verify temperature characterization parame-
ters (Temp Cal Factor).
• Check your process conditions against the val-
ues reported by the flowmeter.
• Contact Micro Motion.
Troubleshooting
160 Micro Motion
®
9739 MVD Transmitters