Sper Scientific 800046 Indoor Air Quality Meter - Manual (Page 16)

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TROUBLESHOOTING
 Can’t turn the meter on?
Press SET for more than 3 seconds and try again. Check
that the batteries have been installed properly (check for
correct polarity) and/or that the adapter is firmly plugged in.
 Frozen readings?
Data Hold function is enabled (Data Hold icon located at the
top left). Disable the Data Hold function.
 Slow Response?
Ensure that the air flow channels located at the top-rear of
the unit are not blocked.
E01: CO
2
sensor is damaged.
E02: The value is under range.
E03: The value is over range.
E04: The temperature or humidity data error results in this
DP, WB error.
E07: Voltage too low to measure CO
2
. Replace batteries
or use adapter.
E11: Retry humidity calibration.
E17: Retry
CO
2
calibration.
E31: Temperature sensor is damaged.
E34: Humidity sensor is damaged.
Error Messages