Polar Electro S120 User Manual page 42

...heart rate reading becomes erratic or extremely high?
You may have come within range of strong electromagnetic
signals which cause erratic readings. Check your surroundings and
move further away from the source of disturbance.
...the display is blank or fading?
If the display is blank, activate the wrist receiver by pressing the
OK button twice, after which the Time of Day display appears. If
the display is fading, have the batteries checked.
...there are no reactions to any buttons?
Reset the Polar heart rate monitor. Resetting clears watch settings
which will return to the default settings.
1. Press the RESET button with a pen tip. Display becomes full of
digits. If you don't press any button after reset within one
minute the wrist receiver returns to the Time of Day display.
2. Press any of the buttons once. Time of day is displayed.
...the battery of the wrist receiver must be replaced?
We recommend having all service done by an authorized Polar
Service Center. This is especially necessary to ensure the warranty
remains valid and is not affected by incorrect repair procedures
done by an unauthorized agent. Polar Service will test your wrist
receiver for water resistance after battery replacement and make
a full periodic check of the complete Polar heart rate monitor.
...the speed reading is 00 or there is no speed reading on
the display while cycling?
1. Check the correct position and distance of the speed sensor
with the spoke magnet.
2. Check that you have set bike functions on.
...the S150 wrist receiver displays speed and distance
readings when I am using it in my wrist?
Turn the speed measurement off. This prevents the receiver from
recording incorrect speed signals which may occur due to
moisture in your skin.
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