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Error codes and flashing sequences
10.2 Error codes on display
Flashing code
Meaning
Solution
Open-end
wrench flashes
every 0.5 s
Adaptation run
at the heating
zone could not
be executed.
Make sure that
the valve drive has
been correctly
mounted on the
valve and that the
connection plug
has been inserted
into the corre-
sponding connect-
ing socket.
Exclamation
mark flashes
every 0.5 s
The heating
zone is in
emergency
operation.
Replace defective
wall thermostat or
check connecting
wire.
Antenna
symbol flashes
every 0.5 s
Connection to
wall thermostat
failed
Check the con-
necting wire to the
wall thermostat
