Duty Cycle; Error Codes And Flashing Sequences - HomeMatic IP HMIP-SWDO-I Montage- Und Bedienungsanleitung

Troubleshooting
7.3

Duty cycle

The duty cycle is a legally regulated limit of the transmis-
sion time of devices in the 868 MHz range. The aim of
this regulation is to safeguard the operation 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 seconds in an hour). De-
vices must cease transmission when they reach the 1%
limit until this time restriction comes to an end. Home-
matic IP devices are designed and produced with 100%
conformity to this regulation. During normal operation,
the duty cycle is not usually reached. However, repeated
and radio-intensive teach-in processes 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 in-
correctly. The device starts working correctly again after
a short period (max. 1 hour).
7.4 Error codes and flashing sequences
Flashing code
Short orange
flashing
38
Meaning
Radio
transmission/
attempting to
transmit/data
transmission
Solution
Wait until the
transmission is
completed.