Wöhler CM 220
ENGLISH
6.
Troubleshooting
Problem
Solution
The meter is switched on but
there is no display .
a) Make sur e that the batteries ar e in
good contact and corr ect polarity .
b) Replace a new battery and try again.
The display disappears.
If the low battery indicator was shown
before the display disappear ed, r eplace
a new battery .
Calibration failur e
If the low battery indicator was shown
before the calibration, r eplace a new
battery.
E 2
The value is underflow
.
E 3
The value is overflow
.
E 31 und E 33
Retur n the meter to the dealer for r epai-
ring.
E 35
a) Self-T est failur e: Turn on the meter
again in other ar ea free of CO.
b) Sensor failur e: Retur n the meter to
the dealer for r epairing.
6. Troubleshooting
