HomeMatic HmIP-DLD Manual De Instalacion Y Uso página 30

Troubleshooting
Caution! There is a risk of explosi-
on if the battery is not replaced
correctly. Replace only with the
same or equivalent type. Never
recharge non-rechargeable batte-
ries (except NiMH batteries type
HR6). Do not throw the batteries
into a fire. Do not expose batteries
to excessive heat. Do not short-
circuit batteries. Doing so will
present a risk of explosion.
10 Troubleshooting
10.1 Low battery
Provided that the voltage value per-
mits 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 drive repeatedly,
once the batteries have been allowed a
brief recovery period.
If the voltage drops too far during ac-
tivity, the empty battery symbol ( )
and the corresponding error code will
be displayed in the app
codes and flashing sequences" on page
31). In this case, replace the empty
batteries by three new batteries or fully
charged batteries
batteries" on page
10.2 Command not confirmed
If at least one receiver does not con-
firm a command, the device LED lights
up red at the end of the failed trans-
mission process. The failed transmis-
sion may be caused by radio inter-
ference (see „13 General information
about radio operation" on page
(see „10.4 Error
(see „9 Replacing
29).
33).
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.
10.3 Duty Cycle
The duty cycle is a legally regulated li-
mit of the transmission time of devices
in the 868 MHz range. The aim of this
regulation is to safeguard the opera-
tion 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 se-
conds 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 pair pro-
cesses 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 flashing 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).
30