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www.generalmonitors.com • email: sales@generalmonitors.com
M
ODEL
2602A
Fault Code
Description
Corrective Action
F1
Open Analog Output Signal.
Check connection on rear terminal pins
20d & 22d.
F2
Failed to Complete
Calibration.
If this fault occurs, remove the gas and
allow the sensor to see clean air for at
least 5 minutes. Press the Mode/Select
switch to clear the fault. 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, replace the unit and consult the
factory or your GMI Representative.
F4
Sensor Heater Open
Circuited.
Make sure the black and white sensor
wires are connected properly (in the field
and at the rear of the unit). If this fault
continues to occur, replace the sensor.
F5
Sensor Heater Short
Circuited.
Make sure the black and white sensor
wires are connected properly (in the field
and at the rear of the unit). Make sure
the black and white sensor wires do not
come in contact with each other and that
there is no short across them. If this fault
continues to occur, replace the sensor.
F6
Low Supply Voltage.
Make sure the supply voltage level at
the chassis is 24Vdc.
