Duty Cycle; Error Codes And Flashing Sequences - HomeMatic HmIP-WTH-1 Installation And Operating Manual

Troubleshooting
9.3

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
comes to an end. Homematic IP devices are designed and produced with
100% conformity 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 three slow
flashes of the device LED, and may manifest itself in the device temporar-
ily working incorrectly. The device starts working correctly again after a
short period (max. 1 hour).
9.4

Error codes and flashing sequences

Error and flashing
codes
Battery
symbol ( )
Antenna
symbol flashing ( )
Flashing humidity
symbol ( )
Flashing conden-
sation and cooling
symbol ( )
Lock symbol ( )
44
Meaning
Battery
voltage too low
Communica-
tion error with
Homematic IP
access point/
floor heating
actuator
Humidity limit (60
%) in the room is
exceeded
Humidity input of
Multi IO Box has
been activated
Operating lock
activated
Solution
Replace the batteries of the
device (see see „8 Changing
the batteries" on page 42).
Please check the connection
to the Homematic IP access
point/floor heating actuator.
Ventilate the room and switch
from cooling to heating
mode, if required
Ventilate the room and switch
from cooling to heating
mode, if required
Deactivate the operating lock
via the app.