Problem
Possible Cause
Remedy
CO
2
reading is too low.
The measured area contains
materials that bind CO
2
(such as fresh concrete),
producing a low-CO
2
environment.
n
Use a portable
instrument to verify the
CO
2
reading at the
installation location. Avoid
breathing on the
instruments while
checking.
n
Check if the transmitter is
installed on a mounting
box that supplies air from
inside the wall into the
transmitter. If yes, plug
the hole. See
CO
2
measurement module
must be replaced.
See
Measurement Module
(GM10) on page 27
.
30
5 Troubleshooting
