
11. Troubleshooting
44
11. Troubleshooting
11.1 Battery Check
Symptom
Possible Cause(s) / Solution(s)
Refer To
(Page No.)
Display does not appear when
power is turned ON.
The battery is exhausted.
→
Turn OFF the power and replace the batteries.
4, 6
Nothing appears on the display
Even after new batteries are
inserted.
The contrast of the display is not adjusted properly.
→ Adjust the contrast with the contrast adjuster.
33
Battery indicator “
” is
blinking.
The battery is exhausted.
→
Turn OFF the power and replace the batteries.
4, 6
11.2 Initial Operation Check
Symptom
Possible Cause(s) / Solution(s)
Refer To
(Page No.)
Display is too dark/light
The contrast of the display is not adjusted properly.
→ Adjust the contrast with the contrast adjuster.
33
“NO PROBE!” is displayed on
the screen.
Probe is not connected.
→ Turn off the power and connect a probe into the instrument.
5
Incorrect measurement unit
Set appropriate unit of temperature
(
o
C,
o
F
)
, absolute humidity
(
g/m
3
, lb/ft
3
)
, and humidity ratio (g/kg, lb/lb).
30
11.3 Check While Measuring
Symptom
Possible Cause(s) / Solution(s)
Refer To
(Page No.)
Reading is displayed as “**.*”.
Measurement range is exceeded.
→ The instrument must be used in the specified measurement
range.
41
Reading is displayed as “-----”.
Or it is kept showing as “0”.
Probe may not be connected property.
→ Check the connection.
5
Probe wire disconnection or sensor damage.
→ Contact your local distributor for repair.
CO and CO2 readings are not
correct.
Probe sensor may be too close to expiratory air.
→ Keep a sensor away from expiratory air as much as possible.
7
Temperature reading is high.
Correct reading cannot be obtained when there is not airflow.
→ Gently move probe
8
Humidity reading is lower than
Assman Psychrometer.
Assman Psychrometer is an intricate instrument and there are
great differences between each psychrometer. Check the
measurement method.
8
11.4 Printer Check
Problem
Possible Cause(s) / Solution(s)
Refer To
(Page No.)
Printing Failure
Confirm that the printer cable is connected properly.
20
Confirm that the Baud Rate is set properly.
→ Check the instrument and printer settings.
20
Summary of Contents for 2212
Page 52: ...13 Contact Information 49 ...