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G
as Sensor
GS-220.P
CHAPTER
6
MAINTENANCE
6.1. Check and re-adjustment
Technically gas sensitive elements used in GS-220 sensor, have specific life time
period. And their gas sensitivity towards the gas decreases with time. Preventive
maintenance and/or re-adjustment at least once every six months must be held.
Calibration and adjustment methods are given in chapter 4 - Settings.
6.2. Diagnostics and frequent problems
Symptom
Problem
Solution
Yellow LED indicator does not light
up after switching on the system
Power supply lost
Check connecting cables and
voltage
Gas sensor detects gas, LEDs
lights, but gas controller does not
respond.
1. Wrong wiring
2. Defected Intrinsically safe line of
gas controller GA-220
1. Check connections
2. Change Intrinsically safe lines
(contact your dealer or
manufacturer)
Sensor is in DANGER mode, but
gas controller GA-220 shows
sensor FAULT
Wrong wiring
Change „1“ and „2” terminals
Sensor is in FAULT mode
1. Broken connection
2. Faulty gas sensor element
1. Check connection from gas
sensitive element to electronic
module
2. Change gas sensitive element
Table. 6.1 – frequent problems and their solutions
ver.1.0
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