HomeMatic HmIP-ASIR, Инструкция по монтажу и руководство по эксплуатации

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Troubleshooting
8 Troubleshooting
8.1 Weak batteries
Provided that the voltage value permits it, the alarm siren
will remain ready for operation also if the battery voltage
is low. Depending on the particular load, it may be possi-
ble to send transmissions again repeatedly, once the bat-
teries have been allowed a brief recovery period.
If the voltage drops too far during transmission, the emp-
ty battery symbol (
) and the corresponding error code
will be displayed in the app and on the device (see „8.4
Error codes and flashing sequences“ on page 38). In
this case, replace the empty batteries by two new batte-
ries (see „7 Replacing batteries“ on page 34).
8.2 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 transmis-
sion process. The failed transmission may be caused by ra-
dio interference (see „11 General information about radio
operation“ on page 40). 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.