User manual

51
Troubleshooting
• Press the system button (A) and the select button (B) of the floor
heating simultaneously until the LED (A) flashes green.
• Restore the factory settings of the wall thermostat (for further
information, please refer to the user manual of the wall thermo-
stat).
10 Troubleshooting
10.1 Command not confirmed
If at least one receiver does not confirm a command, the device LED
lights up red at the end of the failed transmission process. The failed
transmission may be caused by radio interference (see „13 General in-
formation about radio operation“ on page 54). This may be caused be
the following:
• Receiver cannot be reached.
• Receiver is unable to execute the command (load failure, me-
chanical blockade, etc.).
• Receiver is defective.
10.2 Duty cycle
The duty cycle is a legally regulated limit of the transmission time of de-
vices in the 868 MHz range. The aim of this regulation is to safeguard the
operation of all devices working in the 868 MHz range.
In the 868 MHz frequency range we use, the maximum transmission time
of any device is 1% of an hour (i.e. 36 seconds in an hour). Devices must
cease transmission when they reach the 1% limit until this time restriction
comes to an end. Homematic IP devices are designed and produced with
100% conformity to this regulation.