operation manual

78
Troubleshooting
manual change.
• Boost function for Homematic IP Radia-
tor Thermostats
*
: Press the control wheel
(E) of the wall thermostat briefly to activate
the boost function for heating up the radia-
tor quickly and briefly by opening the valve.
There will be a pleasant room tempera-
ture right away because of the radiated heat.
*The boost function can only be executed in connection
with a Homematic IP Radiator Thermostat.
8 Troubleshooting
8.1 Command not confirmed
If at least one receiver does not confirm a command, the
device LED
(D) lights up red at the end of the failed trans-
mission process. The failed transmission may be caused
by radio interference (see „11 General information about
radio operation“ on page 84). This may be caused be
the following:
• Receiver cannot be reached.
• Receiver is unable to execute the command (load
failure, mechanical blockade, etc.).
• Receiver is defective.