Model 610A
30
5.3 Fault Codes
In addition to the Fault LED on the front panel, the Model 610A provides a fault code on
the digital display whenever a fault condition occurs. The Fault Codes that can appear on
the digital display are:
FAULT
CODE
DESCRIPTION SOLUTION
AO
Open Analog Output Signal Check connections on rear terminal pins 5 & 6
and the analog output circuitry. If the problem
is fixed, but “AO” is still displayed, restart the
610A unit.
HI
High Supply Voltage Make sure the supply voltage level is within
specification limits.
LO
Low Supply Voltage Make sure the supply voltage level is within
specification limits.
SE
Sensor Failure
Sensor connections are open or short
circuited or there is excessive zero drift.
Make sure the sensor wires are connected
properly (in the field and at the rear of the
unit) and recalibrate if necessary. If this fault
continues to occur, replace the sensor.
F2
Failed to Complete
Calibration
If this fault occurs, remove the gas and
expose the sensor to clean air for at least five
minutes. Then attempt another calibration. If
the second attempt fails, replace the sensor. If
this fault continues to occur after the sensor
has been replaced, consult the factory or your
GMI Representative.
F3
Software Checksum Error This fault occurs during initial power-up of the
unit. If this fault occurs, remove and reapply
power to the unit. If the fault continues to
occur, consult the factory or your GMI
Representative.
F5
Reset Button Malfunction If the fault occurs, consult the factory or your
GMI Representative.
F6
Mode Select Button
Malfunction
If the fault occurs, consult the factory or your
GMI Representative.
F7
EEPROM Verification Error
for Calibration Storage
If the fault occurs, consult the factory or your
GMI Representative.
F8
EEPROM Verification Error
for Setup Storage
If the fault occurs, consult the factory or your
GMI Representative.
F9
Calibration Check Period
Exceeded
If the calibration-check gas is left on the
sensor for more than 6 minutes, this fault
occurs. Remove the gas and expose the
sensor to clean air.
Table 9: Troubleshooting Table
To Next Page
