32
FAQ AND TROUBLESHOOTING
Symptom Possible Cause Remedy
ST9420C shows the
message ‘SENSOR FAULT’
and a flashing tap symbol
CS92A sensor error
indication (Press CS92A
button and red light blinks
0.5s on, 0.5s off. Note – light
will switch off after approx
1 minute to save battery
power).
CS92A sensor
cable may be
disconnected from
the wiring terminals.
Re-connect the sensor wired to
the CS92A terminals.
Fault with CS92A Call Installer
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