Troubleshooting; Weak Battery; Command Not Confirmed; Duty Cycle - HomeMatic HMIP-WRC2 Montage- Und Bedienungsanleitung

Troubleshooting

Used batteries should not be disposed of with
regular domestic waste! Instead, take them to
your local battery disposal point.
7 Troubleshooting
7.1

Weak battery

Provided that the voltage value permits it, the wall-mount
remote control will remain ready for operation also if the
battery voltage is low. Depending on the particular load,
it may be possible to send transmissions again repeatedly,
once the batteries have been allowed a brief recovery pe-
riod.
If the voltage drops too far during transmission, this will be
displayed on the device or via the Homematic IP app (see
„7.4 Error codes and flashing sequences" on page 42).
In this case, replace the empty batteries by two new bat-
teries (see „6 Replacing batteries" on page 38).
7.2

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 trans-
mission process. The failed transmission may be caused
by radio interference (see „10 General information about
radio operation" on page 44). This may be caused be
the following:
• Receiver cannot be reached.
• Receiver is unable to execute the command (load
40
failure, mechanical blockade, etc.).
• Receiver is defective.
7.3

Duty cycle

The duty cycle is a legally regulated limit of the transmis-
sion time of devices 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. However, repeated and radio-intensive teach-
in processes mean that it may be reached in isolated in-
stances during start-up or initial installation of a system. If
the duty cycle is exceeded, this is indicated by three long
flashes of the device LED, and may manifest itself in the
device temporarily working incorrectly. The device starts
working correctly again after a short period (max. 1 hour).
Troubleshooting
41