FAQ AND TROUBLESHOOTING
Symptom Possible Cause Remedy
ST9420C shows the
message ‘SENSOR
LOW BATT’ and a
flashing radiator
symbol
Your DT92E
batteries are
running low on
power
Change the DT92E batteries (see
page 21 for how to do this)
DT92E shows a
flashing battery
symbol
DT92E display is blank
ST9420C shows the
message ‘NO SIGNAL’
and a flashing radiator
symbol
DT92E shows a
flashing RF symbol
Your DT92E
batteries are
running low on
power
Change the DT92E batteries (see
page 21 for how to do this)
RF communication
path between
ST9420C and
DT92E is blocked,
possibly by a metal
object
Check direct path between both
products and re-position any objects
that may be blocking the signal
Relocate the DT92E, if possible
ST9420C shows the
message ‘SENSOR
FAULT’ and a flashing
radiator symbol
DT92E display shows
‘
’ and a flashing
spanner symbol
Fault with DT92E Call Installer
Troubleshooting Guide (cont.)
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