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8. Troubleshooting
8.1. Fault List
[Table 11. Fault List]
FAULT MESSAGE
DESCRIPTION & CONDITION
CAUSE
[FAULT-01]
"SENOR EMPTY"
Occurs when sensor module is disconnected.
Defective Sensor Module connection
[FAULT-02]
"SENSOR HIGH"
Sensor output is above ADC max. value.
Defective sensor module or transmitter board ADC
[FAULT-03]
"SENSOR LOW"
Sensor output is below ADC min. value.
Defective sensor module or transmitter board ADC
[FAULT-04]
"EEPROM ERROR"
Defective Transmitter EEPROM Checksum
Defective Transmitter Board EEPROM
[FAULT-05]
"+24V LOW"
It occurs when 24 V main input power is inputed
with voltage below 17V.
Input power below 17 V or defective Transmitter
ADC
[FAULT-06]
"ADC FAIL"
Defective Transmitter ADC
Defective Transmitter ADC
[FAULT-07]
"H/W REVISION"
H/W Version Error
Defective MPU inside Transmitter
[FAULT-08]
"SENSOR HUNTING"
When there is repeated hunting error in gas
measurement
Sensor output status may be poor or check for
input power noise.
8.2. Recovery List
[Table 12. Recovery List]
No
CAUSE
SOLUTION
1
Defective Sensor Module Connection
1) Check Sensor Connection and Connection status of the Connector
2) Change Sensor
2
Defective Sensor Module
1) Check Sensor Connection and Connection status of the Connector
3
Defective Transmitter Board ADC
2) Change Sensor
4
Defective Transmitter Board EEPROM
1) Perform Factory Initialization then correct parameter and re-calibrate
2) Change sensor unit when the same problem occurs again
5
Defective MPU inside Transmitter
Change Transmitter Main Board
6
Poor Sensor Output Status
Change Sensor
7
Check Input Power Noise
Check External Input Voltage Noise Status
