9023810 - 2nd edition - September 2005
Page 23 of 42
Fault - Cause - Remedy
Fault - Cause - Remedy
Should it not be possible to eliminate the malfunctions occurring by employing the
remedial measures described, or should other faults occur:
Check transmitter and, if necessary, arrange repair by trained service personnel.
Fault Cause Remedy
Display off Cable faulty Check cable to central controller.
Transmitter cannot be calibrated Sensor faulty or poisoned Replace sensor, page 22.
Signal output is 1 mA, display shows E0,
E1, …., or E8
Transmitter is faulty See following table.
Failure code Cause Remedy
E0 Supply voltage is below 12 V DC or
above 30 V DC.
Connect transmitter to proper voltage.
E1 Hardware failure Replace 4 to 20 mA-Converter module.
E2 Storage failure, failure while reading the
calibration information
Repeat calibration procedure. If failure
repeatedly occurs: Hardware failure.
Replace converter module.
E3 Sensor not connected or defective Check sensor connection and if needed
replace sensor.
E4 Sensor signal lower than –5 % LEL or
lower than –0.5 % LEL
Adjust zero and sensitivity.
E5 Failure during zero adjustment (e.g. if the
offset is too high)
Check zero gas and sensor or replace
sensor.
E6 Failure during sensitivity adjustment (e.g.
if the sensor signal is lower than
0.08 mV/% LEL)
Repeat sensitivity adjustment, check test
gas concentration or replace sensor.
E7 Failure while adjusting the 4 to 20 mA-
output current
Repeat procedure, check electrical
installation.
E8 System failure Replace 4 to 20 mA-Converter module.
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