FISCHER MMS - Malfunctions - What Should You Do

Malfunctions – What should you do?
81
MMS
®
Inspection DPM High
12 Malfunctions – What should you do?
Malfunction Possible causes Remedy
Dark display
 The gage is switched off. ► Switch on the gage
with the key.
 The protective film is still
in the battery compart-
ment and is inhibiting the
energy supply.
► Remove the protective
film from the battery
compartment before
use.
 The battery compartment
contains defective batter-
ies.
► Change the batteries,
see page 76.
 The USB port is in an
undefined state.
► Remove the batteries
and place them in the
battery compartment
again. Switch on the
gage with the key.
Faulty measure-
ments
 The housing grille is cov-
ered, e.g., by fingers or
hand, this occur faulty
measurements of relative
humidity and air tem-
perature
► Keep the housing
grille in the lower area
of the gage clear.
Avoid covering with
hands, material or
other objects.
 The plug of the connected
external surface tem-
perature sensor is not
properly inserted into the
gage socket.
 The cable or the plug of
the external surface tem-
perature sensor is defec-
tive.
► Check the connection
of the external surface
temperature sensor.
► Check the external
surface temperature
sensor of his proper
functioning.