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Troubleshooting
9.1
Weak battery
Provided that the voltage value permits it, the device 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 period.
If the voltage drops too far during transmission, the empty battery symbol
(
) and the corresponding error code will be displayed on the device (see
see „9.4 Error codes and flashing sequences" on page 54). In this case,
replace the empty batteries by two new batteries (see see „8 Replacing
batteries" on page 52).
9.2
Command not confirmed
If at least one receiver does not confirm a command, the device LED
(C) lights up red at the end of the failed transmission process. The failed
transmission may be caused by radio interference (see see „12 General
information about radio operation" on page 56). The failed transmission
may also be caused by the following:
•
Receiver cannot be reached.
•
Receiver is unable to execute the command (load failure,
mechanical blockade, etc.).
•
Receiver is defective.
9.3
Duty cycle
The duty cycle is a legally regulated limit of the transmission 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.
Troubleshooting
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