VU113 Graphical display with keys and Bluetooth VU112 Graphical display with keys Troubleshooting
Endress+Hauser 17
7 Troubleshooting
7.1 Errors in local operation
Error Possible cause Remedy
Key not responding Cover glass dirty Remove dirt.
If necessary, then wait 3 min until the keys respond to
operation again.
Condensate on cover glass Wipe dry with a clean cloth.
If necessary, then wait 3 min until the keys respond to
operation again.
Sunlight on the display Sunlight can affect the function of the optical sensors.
Provide shade and try again
Bluetooth operation active Simultaneous operation onsite and via Bluetooth is not
possible. You can determine whether or not Bluetooth
is active by the flashing Bluetooth symbol or the
crossed-out key symbols.
Key not responding when
operating with gloves
Glove reflection may be too low
to detect operation (black
gloves).
Remove gloves or replace with other glove material
Key not responding after
replacement of housing
cover
The keys are adapted to the
viewing window materials. A
change of material will cause
malfunctions.
Contact Endress+Hauser Service.
Key not responding or is
too sensitive after opening
the housing cover
Display crooked in housing Open again and ensure the display is mounted
correctly and properly engaged in the catches
Key not responding after
housing cover cleaning
The cleaning changes the
reflection properties of the
device cover
The function readjusts, operation should be possible
again after approximately 3 min.
Wrong key response
during rain
Raindrops can be incorrectly
interpreted as user input.
Locking the display prevents incorrect response.
Locking is activated automatically if the device is not
operated for longer, or can be activated manually (see
"Operation" section)
7.2 Error - SmartBlue operation
Error Possible cause Remedy
Login via SmartBlue not
possible
No Bluetooth
connection
Enable Bluetooth function on smartphone or tablet
Bluetooth function of sensor disabled, perform recovery
sequence
HistoROM missing Attach HistoROM
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