HomeMatic HmIP-WRCC2, Mounting Instruction And Operating Manual

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Troubleshooting
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
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
44). In this case, replace the empty batteries by two
new batteries (see “6 Replacing batteries” on page 40).
7.2 Command not confirmed
If at least one receiver does not confirm a command, the
LED
(C) lights up red at the end of the failed transmission
process. The failed transmission may be caused by radio
interference (see “10 General information about radio
operation” on page 47). 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.