Troubleshooting; Command Not Confirmed; Duty Cycle - HomeMatic IP HmIP-FWI Notice D'installation Et Mode D'emploi

Troubleshooting

6 Troubleshooting
6.1

Command not confirmed

If at least one receiver does not confirm a command, the device LED
(A) lights up red at the end of the failed transmission process. The failed
transmission may be caused by radio interference (see see „9 General
information about radio operation" on page 31). This may be caused
by the following:
• Receiver cannot be reached.
• Receiver is unable to execute the command (load failure, me-
chanical blockade, etc.).
• Receiver is faulty.
6.2

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.
During normal operation, the duty cycle is not usually reached. How-
ever, repeated and radio-intensive pairing processes mean that it may
be reached in isolated instances during start-up or initial installation of a
system. If the duty cycle is exceeded, this is indicated by one long flash of
the device LED (A), and may manifest itself in the device temporarily not
working. The device will start working correctly again after a short period
(max. 1 hour).
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