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Failures
13
Failures
Failure
The meter cannot be
switched on.
The current readings do not
appear.
Slow Response
Error messages
E01
E02
E03
E04
E07
E11
E17
E31
E34
62
Possible reason
Batteries are empty.
The ON OFF key has not
been well pressed.
Check whether the data
hold function is activated.
Check whether the air flow
channels on the rear were
blocked.
Significance
The CO
sensor is out of order. Retry CO
2
The value is under range.
The value is over range.
The original data error results in this error (DP, WB).
Battery voltage is too low for the CO
Change batteries or connect the adaptor.
Retry humidity calibration.
Retry humidity calibration.
The temperature sensor is damaged.
The humidity sensor is damaged.
Solution
Check whether the batteries
are in good contact or cor-
rect polarity or whether the
adaptor is well plugged. If
necessary change the bat-
teries.
Keep the ON/OFF key
pressed for a second.
If the HOLD icon blinks at
the left top, press HOLD to
deactivate the HOLD func-
tion.
If necessary clean the air
flow channels.
calibration.
2
measurement.
2
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