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5. Troubleshooting
Possible faults that could impair the correct display of the transmitted readings
are:
No reception – The distance between transmitter and receiver is too great.
Reduce the distance between the transmitter and the receiver.
No reception – Dense shielding materials are positioned between the trans-
mitter and the receiver (thick walls, reinforced concrete, ...)
Find another position for the transmitter and receiver. See also chapter 6 ("Range").
Transmitter batteries are discharged.
Change batteries
Transmitter is blocked by a source of interference
(radio device, radio headset/loudspeaker)
Remove source of interference or find alternative location for transmitter and receiver.
Often the interference is of a temporary nature (radio telephony) or can be removed
very easily. If there are radio headsets, baby listening devices or similar devices
operating on 433 MHz in your house or in the neighbourhood, their turn-on time is
normally limited. Most of these devices permit change to a frequency free of inter-
ference. A measure such as this effectively cuts out interference.
A radio sensor interferes with other devices in the 433 MHz range
The transmissions from a radio sensor can interfere with other devices on the same
channel for a short period (every 3 minutes for about 100 ms).
Further information on installation and removal of interference
Under critical reception conditions the sensor test mode makes it easier to choose
the best possible location. For this purpose, the sensor concerned is put in test
mode, so that every four seconds a data packet is transmitted.
To activate the test mode, remove the batteries from the sensors and then wait for
at least 60 seconds before putting them back in. You must then initiate synchroni-
sation mode on the base unit, also by removing and then reinserting the batteries
(Attention! All settings and collected data will then be lost!)
Rotate the weather station a little if required, and if reception is bad, locate it away
from electric motors, electrical machines, televisions, computer monitors and large
metal surfaces.
To facilitate commissioning you can initially locate the sensors in the vicinity of the
base unit (at least 6 ft. distance). In this way you can check the correct transmission
of data by the sensor.