General Information About Homematic; Battery Replacement; Notes On Rectifying Malfunctions - HomeMatic WDC7000 Operating Manual

5 General system information about HomeMatic
This device is a part of the HomeMatic home control system and works with the
bi-directional BidCoSTM wireless protocol.
All devices are delivered in a standard configuration. The functionality of the device can
also be configured with a programming device and software.
The additional functions that can be made available in this way and the supplementary
functions provided by the HomeMatic system when it is combined with other compo-
nents are described in the HomeMatic WebUI Manual.
All current technical documents and updates are provided at
www.homematic.com.
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Battery replacement

Base station
If the symbol indicating that a battery is empty (
ries need to be replaced with others of the same type as per Subsection 2.1. Always re-
place all 4 batteries and use only high-quality alkaline batteries. Always leave the power
supply unit connected when replacing the batteries in order to avoid losing any data.
Please note!
If no power supply unit is connected, the data memory will be deleted
when the batteries are replaced.
Wireless sensors
The batteries in these sensors have a service life of up to 2 years (alkaline batteries). If
the symbol indicating that a battery is empty (
field when the corresponding sensor is selected, the batteries need to be replaced.
Caution! Danger of explosion if battery is replaced improperly.
Used batteries are not to be disposed of with the
household waste! Please dispose them at your local
battery collection point!
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) appears on the display, all batte-
) appears in the "OUTDOOR" sensor
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Notes on rectifying malfunctions

Possible malfunctions that could prevent transmitted measured values being
displayed properly:
No reception – The distance between the transmitter and the receiver is too long
or too short (<1 m).
Decrease/increase the distance between the transmitter and the receiver.
No reception – Materials with good shielding properties are located between the
transmitter and the receiver (thick walls, reinforced concrete, etc.).
Find another position for the transmitter or the receiver. Refer also to Section 6 ("Ran-
ge").
No reception – Transmitter batteries are empty.
Replace the batteries.
No reception – The transmitter is subject to a source of interference.
(Wireless device, radio headphones/loudspeaker)
Eliminate the source of interference or find another position for the transmitter or the
receiver. Often the interference is only present on a temporary basis (radio telephony)
or can be eliminated very easily. If radio headphones, wireless baby monitors or other
similar devices are operated at 868 MHz in your home or in the neighbourhood, for
example, they are usually only switched on for a limited period of time. The majority of
these devices can be moved to an interference-free frequency and a measure such as
this can mask interference really effectively.
Wireless sensor interferes with other devices in the 868 MHz band
Transmissions from the wireless outdoor sensor can interfere temporarily (every 2 to 3
min for around 100 ms) with other devices working on the same channel.
Additional notes on start-up and the rectification of malfunctions
Rotate the weather station a little if necessary or, if reception is poor, position
it far away from electric motors, electrical machinery, television sets, computer
monitors and large metal surfaces.
To make start-up easier you can initially position the sensors in the vicinity of the base
unit (but at least 1 m away from it). This enables you to check that the sensor is trans-
mitting data correctly.
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