HomeMatic IP HmIP-STV Manual De Instalacion Y Uso página 30

Troubleshooting
8.3 Duty cycle
The duty cycle is a legally regulated limit of the transmission time of de-
vices 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). Devices must
cease transmission when they reach the 1% limit until this time restriction
ends. Homematic IP devices are designed and produced with 100% con-
formity to this regulation.
During normal operation, the duty cycle is not usually reached. How-
ever, repeated and radio-intensive pairing 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 red
flashing of the device LED (A), and may manifest itself in the device tem-
porarily working incorrectly. The device starts working correctly again af-
ter a short period (max. 1 hour).
8.4 Error codes and flashing sequences
Flashing code
Short orange
flashes
1x long green
lighting
1x long red flash
Brief orange flash-
ing
(every 10 s)
30
Meaning
Radio transmission/send
attempt/data transmis-
sion
Transmission confirmed
Transmission failed or
duty cycle limit reached
Pairing mode active
Solution
Wait until the transmis-
sion is completed.
You can continue oper-
ation.
Please try again (see
sec. „8.2 Command not
confirmed" on page
29 or „8.3 Duty cycle"
on page 30).
Enter the last four
numbers of the device's
serial number to con-
firm (see „6.1 Pairing" on
page 26).