operation manual

37
Troubleshooting
Once the battery has been inserted, the window handle
sensor will perform a self-test (approx. 2 seconds). Af-
terwards, initialisation is carried out. The LED test display
will indicate that initialisation is complete by lighting up
orange and green.
Never recharge standard batteries. 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.
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 window han-
dle sensor 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, this will be
displayed on the device or via the Homematic IP app (see
„7.4 Error codes and flashing sequences“ on page 39). In
this case, replace the empty battery by a new one (see „6
Changing battery“ on page 36).