TFA Dostmann 30.3037.01.IT Mode D'emploi page 63

No transmitter reception
Display "---"
No DCF reception
Incorrect display
 Check batteries of external transmitter (do not use
rechargeable batteries!)
 Restart the transmitter and temperature station as
per the manual
 Choose another place for the transmitter and/or the
temperature station
 Reduce the distance between the transmitter and
the temperature station
 Check if there is any source of interference
 Time reception setting "ON"
 Choose another place for the temperature station
 Manual time setting
 Wait for attempted reception during the night
 Change batteries
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