3.Check that you are not near other people that have heart rate monitors, high voltage power lines, televisions, mobile phones or other sources of electromagnetic disturbance.
4.Have you had a cardiac event which may have altered your ECG waveform? In this case consult your physician.
...heart symbol flashes irregularly?
1.Check that the wrist receiver is not further than 1 metre/ 3 feet from the transmitter.
2.Check that the elastic strap has not become loose during exercise.
3.Make sure that the electrodes of the transmitter are moistened.
4.Make sure that there is no other heart rate transmitter within 1 metre/ 3 feet.
5.Cardiac arrhythmia may cause irregular readings. In this case consult your physician.
...other person with heart rate monitor is causing interference?
Your training partner may have exactly the same code as you. In this case proceed as follows: Keep a distance from your training partner and continue your training session normally.
Or
1.Take the transmitter off your chest for 30 seconds. Keep a distance from your training partner.
2.Put the transmitter back and bring the receiver up to your chest near the transmitter’s Polar logo. The receiver starts looking for a heart rate signal again. Continue your training session normally.
...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. The first sign of a discharged battery is the battery symbol on the display. Also the digits fade when the backlight is used. 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. User information and measuring units settings will be saved.
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 authorised Polar Service Centre. This is especially necessary to ensure the warranty remains valid and is not affected by incorrect repair procedures done by an unauthorised 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.
...there are irregular speed, distance or heart rate readings?
You may have come within range of strong
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