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MAN0604_Issue 09_02-2013
2110M8030
4.6 FAULT DIAGNOSIS
Apex system faults can be those displayed on the Transmitter Unit screen or be of a general type.
This section describes:
•
Error messages displayed on the Transmitter Unit LCD screen.
These are either fault or warning types. They can normally be corrected at the Transmitter
Unit or Certified Sensor.
•
Errors that are not diagnosed by the system itself but need
some action.
For example the Certified Sensor reads low when gas is applied. To rectify this fault the
control system span needs to be adjusted.
•
Signal ranges and fault conditions on the 4-20mA output.
•
How to clear latched alarms
4.6.1 Displayed Error Messages
The error messages on the LCD screen are similar to the following:
The following table lists all the displayed Fault (F) and Warning (W) messages.
Message
W: Sensor Failed
F: Sensor Failed
F: No Cartridge
F: Wrong Cartridge
F: Cartridge Failed
W: Temperature Error The cartridge is being operated at temperatures outside its specified
F: Temperature Error
4. OPERATION
FAULT
F:No Cartridge
Cause/Remedy
A Certified Sensor fault has developed.
Check the connections between transmitter and Certified Sensor.
Re-calibrate the Certified Sensor.
If fault remains replace the complete Certified Sensor assembly.
The Certified Sensor reports there is no cartridge fitted.
Check that the cartridge is fitted correctly.
If no cartridge present, fit required cartridge.
The wrong type of cartridge has been fitted in the Certified Sensor.
Replace the cartridge with correct type for the target gas.
The cartridge has failed.
Replace the cartridge.
temperature range.
Identify the cause of temperature problem.
Fit suitable accessories or relocate the Certified Sensor as appropriate.
If fault persists replace the Certified Sensor.
Panels flash
alternately until
fault cleared
78
Apex
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