46
7.
Troubleshooting
Before contacting us for service repair, perform basic troubleshooting using the table below.
If the detector locks up (cannot be turned off), remove all batteries. After a few minutes, put
the batteries back in and turn on the detector.
Symptom
Cause
Action
Reference
Pressing the
power button
does not turn on
the power
Battery orientation
incorrect
Remove batteries
and reinsert them in
the correct
orientation.
“Battery
Replacement”
and “Charge
Batteries” on
pages 38-40
Battery depleted
Replace/charge
batteries.
No audio sounds
Audio is set to MUTE
Unmute the audio
“Audio volume
control” on
page 31
Cannot detect
gas
Gas sampling tube
damaged
Replace the gas
sampling tube with a
new one.
Error message
appears
See “Error Messages” on pages 36-37.
“0” or “0.0” blinks
for gas
concentration
The reading shifts in the
negative area. It
indicates there is a
possibility that zero
adjustment was
performed in a gas
atmosphere or the unit
was exposed to high
concentration gas
Perform zero
adjustment in clean
air.
“Zero
adjustment” on
page 22
Reading does not
change while
sampling gas or
in gas
atmosphere
Impact on the device,
e.g., by falling from a
high place
Wait for 10 seconds.
If the reading
remains unchanged
after 10 seconds,
turn the unit off and
then turn it on in
clean air.
