POLAR DA20 - Manual (Page 26)

Troubleshooting
If you don't know where your are in the menu,
press and hold BACK until the time is displayed.
If there are no reactions to any buttons or if the
display is behaving abnormally, reset the wrist unit
by pressing four buttons (UP, DOWN, BACK and
LIGHT) simultaneously for four seconds. The
activity log and all other settings except time and
date will be saved.
If the animation on the display is not moving while
you are, make sure you are recording, see "Start
Training", then move effectively and fast enough
for the animation to move. Too slow or too careful
movement may also stop the animation, as such
movement is not considered beneficial enough.
If the display is blank, the FA20 may be in battery
saving mode, as it is dispatched from the factory.
Press any button for one second. For more, see
Basic Settings.
If the low battery symbol is visible, this may mean
that the battery needs changing. For further
information, see Care and Maintenance.
If the battery of the wrist unit must be replaced,
we recommend you service your device at an
authorized Polar Service Center only. This is
especially necessary to ensure that the guarantee
remains valid and is not affected by incorrect
repair procedures performed by an unauthorized
agent. Polar Service will test your FA20 for water
resistance after battery replacement, and make a
full check of the device.
E N G L I S H
26 Customer Service Information