Manual

20
TROUBLESHOOTING
Note: If the instrument appears to malfunction, try removing and reinstalling the battery.
Symptom Possible Cause Solution
Power indicator LED does
not light. (Unit does not
switch ON.)
Batteries are not charged. Connect charger to unit and
charge batteries. Refer to
Getting Started.
All LEDs flash red, and pump
does not run.
Failed sensor. Replace sensor. Refer to
Maintenance.
Audible alarm does not
sound even though LEDs
light.
MUTE feature is engaged. Turn OFF mute feature. Refer
to Operating Features.
Unit behaves erratically -
alarms in fresh air.
Probe tip or flexible probe
hose is causing disturbed air
flow.
Tighten probe tip and / or
probe.
Constant Power Indicator
flashes ON and OFF.
This is the Old Sensor
Indication.
The sensor will soon require
replacement. Order the
replacement, but wait until
the Failed Sensor Indication
is received to install. Refer to
Maintenance.
During battery charging, the
charge indicator goes out
after 10 minutes.
Batteries have failed and
cannot be recharged.
Obtain replacement battery
pack. Refer to Getting
Started.
During battery charging, the
charge indicator begins to
flash red.
Batteries have failed and
cannot be recharged.
Obtain replacement battery
pack. Refer to Getting
Started.