Troubleshooting; Weak Battery; Command Not Confirmed - Homematic IP HmIP-SPI Mounting Instruction And Operating Manual

Troubleshooting

9 Troubleshooting
9.1

Weak battery

Provided that the voltage value permits it, the presence
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 „9.2 Command not confirmed" on page 34). In this
case, replace the empty batteries by two new batteries
(see „8 Replacing batteries" on page 32).
9.2

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 trans-
mission process. The failed transmission may be caused
by radio interference (see „12 General information about
radio operation" on page 39). 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.
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