6.0 Trouble-Shooting Diagram
Error code Problem Solution
2 The thermostat is
configured as master in
the local network but
has detected another
master
Reconfigure one of the master ther-
mostats as slave or independent.
3 The thermostat is
configured as slave in
the local network but
cannot detect a master
Reconfigure one of the thermostats
as master, or configure all units as
independent.
4 The thermostat was
switched off because of
overheating
Allow the thermostat to cool down,
and then access basic settings to
reset the error. Check the wiring if
this error appears again. Replace
the thermostat if the error does not
disappear
5 Short circuit in floor
sensor
Check the sensor connection to the
thermostat. Disconnect the sensor
cables and test them. Replace the
sensor if it is faulty. Replace the ther-
mostat if the error keeps appearing
6 Open circuit in floor
sensor
Check the sensor connection to the
thermostat. Disconnect the sensor
cables and test them. Replace the
sensor if it is faulty. Replace the ther-
mostat if the error keeps appearing
7 The clock and weekday
have not been set
Set the clock and weekday. This error
usually appears:
If the clock has not been set and •
the timer is activated
If the thermostat has been •
unplugged from the supply volt-
age for more than 4 days and the
backup battery is depleted
If the thermostat is unplugged •
from the power supply, and the
backup battery has not accumu-
lated enough power (takes approx.
16 hours)
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