Troubleshooting; Error Display Codes - Extech Instruments CO210 User Manual

Troubleshooting

No power
Slow response
"BAt" and green LED flash

Error Display Codes

CO2
Display
Code
E01 CO sensor malfunction.
2
E02 CO reading out of range (low).
2
E03 CO reading out of range (high).
2
E17 CO senor failure.
2
Temperature
Display Code
E02
E03
E31
Humidity
Display
Code
E04
E11
E34
Check that the AC adaptor is properly connected.
Check that rear air flow vents are not blocked.
The adaptor output voltage is too high or too low.
Air temperature out of
range (low).
Air temperature out of
range (high).
Sensor malfunction.
Temperature display shows error.
RH calibration failure.
RH sensor circuit failure.
Return for repair.
Re-calibrate the meter. If problems persist,
return for repair.
Place the meter in fresh air and allow 5
minutes. If problem persists, re-calibrate the
meter. Return for service if necessary.
Return for repair.
Place the meter at room temperature for 30
minutes. If problem persists, return for repair.
Same as EO2.
Return for repair.
Refer to temperature error codes.
Please return for repair.
Please return for repair.
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CO210-en-US v1.3 1/21