Troubleshooting; Weak Battery; Command Not Confirmed; Duty Cycle - HomeMatic HmIP-FCI1 Installation And Operating Manual

Troubleshooting

8 Troubleshooting

8.1 Weak battery

Provided that the voltage value per-
mits it, the contact interface remains
ready for operation even if the battery
voltage is low. Depending on the par-
ticular load, it may be possible to send
transmissions again repeatedly once
the batteries have been allowed a brief
recovery period.
If the voltage drops too far during
transmission, this will be displayed on
the device or via the Homematic IP app
(see „8.4 Error codes and flashing se-
quences" on page
replace the empty battery with a new
one (see „7 Changing the battery" on
page 18).

8.2 Command not confirmed

If at least one receiver does not con-
firm a command, the device LED (E)
lights up red at the end of the failed
transmission process. The failed trans-
mission may be caused by radio inter-
ference (see „11 General information
about radio operation" on page
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.
20). In this case,
21).

8.3 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 sec-
onds 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 de-
signed and produced with 100% con-
formity to this regulation.
During normal operation, the duty
cycle is not usually reached. However,
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 red lighting of the device
LED (E), and may manifest itself in the
device temporarily working incorrect-
ly. The device starts working correctly
again after a short period (max. 1 hour).
19