Honeywell 5704 Operating Instructions Manual page 136

MAN0448_Issue 13_ 01-2010
005704-M-5001 A03249
CHAPTER 5 - COMMISSIONING AND
MAINTENANCE INSTRUCTIONS
Error
Code
74
Error Code Meaning
This indicates that the output from the
sensor is too low due to either:
a. a faulty sensor which may be poisoned
or damaged.
b. the calibration gas is incorrect. Check
the calibration gas bottle certificate
and age.
c. sticky gas such as chlorine or ammonia
is not reaching the sensor.
Note: With software version 1V5, Error 75
may be generated while setting
zero. In this case see Error 77.
Calibration Signal Too High
The calibration signal too high message
is displayed during calibration when the
sensor span signal is above the pre-
configured levels and a span calibration
can not be achieved.
This indicates that the output from the
sensor is too high due to either:
a. a faulty sensor, bad cabling or wrong
sensor defaults in configuration.
b. the calibration gas is incorrect. Check
the calibration gas bottle certificate
and age.
5-15
5704 Control System
Software Card Fault latch
Version Status Signal
All Active No No