Troubleshooting - TFA 60.4509 Instruction Manual

TFA_No. 60.4509_Anleit_02_23 10.02.2023
Radio-controlled clock with temperature
7. Radio-controlled time reception
The time base for the radio-controlled time is a caesium atomic clock operated by the Physikalisch Technische Bundes-
anstalt Braunschweig. It has a time deviation of less than one second in one million years. The time is coded and trans-
mitted from Mainflingen near Frankfurt via frequency signal DCF-77 (77.5 kHz) and has a transmitting range of approxi-
mately 1,500 km. Changeover from summer time or winter time is automatic. In Daylight Saving Time
LCD. The quality of the reception depends mainly on the geographic location. Normally there should be no reception
problems within a 1,500 km radius around Frankfurt.
Please take note of the following:
• The recommended distance to any interfering sources like computer monitors or TV sets is at least 1.5 - 2 metres.
• Inside ferro-concrete rooms (basements, superstructures), the received signal is naturally weakened. In extreme
cases, please place the unit close to a window to improve the reception.
• During nighttime, the atmospheric interference is usually less severe and reception is possible in most cases. A single
daily reception is adequate to keep the accuracy deviation under 1 second.
8. Operation
• Press and hold UP or DOWN button in the respective setting mode for fast running.
• The instrument will automatically quit the setting mode if no button is pressed within 15 seconds.
8.1 Manual setting of the clock and calendar
• Press and hold SET button in normal mode for two seconds.
• The year indication will be flashing.
• Press UP or DOWN button to adjust the year.
• Press SET button again to make the settings in the following sequence: month, day, hour, minute and day-of-the-week
language. Press UP or DOWN button to adjust it.
• Confirm the setting with the SET button.
• Day-of-the-week language: ENGLISH, GERMAN, FRENCH, SPANISH, ITALIAN, DANISH, DUTCH.
• Press UP button in normal mode to choose between 24- and 12 HR system (AM or PM appears on the display).
• The manually set time will be overwritten by the DCF time when the signal is received successfully.
8.2 Setting of the second clock time
• Press and hold DOWN button in normal mode for two seconds.
• appears on the display.
• Press and hold the SET button.
• The hour's digit and will be flashing.
• Press UP or DOWN button to adjust the hours.
• Confirm the setting with the SET button.
• The display shows the second clock time.
• Press and hold the DOWN button again to return to normal mode.
• and the second clock time disappear on the display.
8.3 Setting of the two alarm times
• To enter alarm mode, press SET button in normal mode.
• AL 1 and 0:00 (default) or the last adjusted first alarm time appear on the display.
• Press and hold SET button.
• The hour digits will be flashing.
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is shown on the
Radio-controlled clock with temperature
• Press UP or DOWN button to adjust the hours.
• Confirm the setting with the SET button and set minutes in the same way.
• Confirm the setting with the SET button.
• The display shows the adjusted alarm time.
• Press the SET button again to adjust eventually the second alarm time in the same way.
• Press the SET button again to return to the current time.
8.4 Activate and deactivate the alarm times
• To activate and deactivate the alarm times, press the ALARM button in normal mode.
• The corresponding symbol , , + or no alarm symbol appears.
• When the adjusted alarm time is reached, the alarm will ring.
• The corresponding alarm symbol will be flashing .
• Press any button to stop the alarm.
• If the alarm is not stopped manually, the increasing alarm will automatically turn off after certain minutes and will be
reactivated at the same time.
• The alarm symbol stays in the display.
• When the alarm rings, press the SNOOZE button and the snooze function will be activated.
• Once the snooze function will be activated, Zz will be flashing on the display.
• The alarm will be interrupted for 5 minutes.
• To turn off the alarm and snooze function press the ALARM button.
• The alarm symbols and the snooze symbol disappear.
8.5 Temperature display
• Press the DOWN button in normal mode to change between °C (Celsius) or °F (Fahrenheit) as temperature unit.
9. Care and maintenance
• Clean your instrument with a soft damp cloth. Do not use solvents or scouring agents.
• Remove the batteries if you do not use the product for a long period of time.
• Keep the instrument in a dry place.
9.1 Battery replacement
• Change the batteries when the battery symbol appears on the display.
• Fold in the stand.
• Open the battery compartment and insert two new batteries 1,5 V AAA.
• Make sure the polarities are correct.
• Close the battery compartment again.
10. Positioning and fixing
• With the wall mount hole you can fix the radio controlled clock with a solid nail or a screw and dowel on a wall. For
table standing please fold out the holder (150 degrees). The installation is successful if you hear a click.

11. Troubleshooting

Problems Solutions
➜ Ensure that the battery polarity is correct
No display on the device
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