Extech Instruments IAQ320 User Manual page 16

8
Maintenance
• Wide fluctuations in the ambient relative humidity can cause an increase in
particle accumulation readings.
8.4 Error Codes
The meter will display codes under certain conditions, refer to the table below.
CODE
E01
E02
E03
E17
E31...E34
8.5 Reset Button
If the display locks or otherwise malfunctions, press the reset button on the
back of the meter (see the Product Description section). Use a pin or similar
tool to reach the recessed button. When the button is pressed, the meter will
restart.
If problems persist, disconnect the meter from power for at least 2 hours and
check again. Contact FLIR support if the device cannot be reset.
#NAS100144; r. AC/95652/95652; en-US
DESCRIPTION
Sensor damage
Under-range
reading
Over-range reading
Calibration failed
Temperature/RH
circuit failure
SOLUTION
Return meter for service
in CO mode: Re-calibrate.
2
For other modes: Place the meter at room tempera-
ture for 30 minutes and recheck. If issue persists, re-
turn for service.
in CO
mode: Place the meter in fresh air for 5
2
minutes.
For other modes: Place the meter at room tempera-
ture for 30 minutes and recheck. If issue persists, re-
turn for service.
Return meter for service
Return meter for service
14