Honeywell Home ST9420C User Manual page 28

FAQ AND TROUBLESHOOTING
Troubleshooting Guide (cont.)
Symptom
ST9420C shows the
message 'SENSOR
LOW BATT' and a
flashing radiator
symbol
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
ST9420C shows the
message 'SENSOR
FAULT' and a flashing
radiator symbol
DT92E display shows
' ' and a flashing
spanner symbol
28
Possible Cause
Your DT92E
batteries are
running low on
power
Your DT92E
batteries are
running low on
power
RF communication
path between
ST9420C and
DT92E is blocked,
possibly by a metal
object
Fault with DT92E
Remedy
Change the DT92E batteries (see
page 21 for how to do this)
Change the DT92E batteries (see
page 21 for how to do this)
Check direct path between both
products and re-position any objects
that may be blocking the signal
Relocate the DT92E, if possible
Call Installer