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Recording stopped, Battery Empty is displayed | The charge is critically low. The training computer |
| stops recording the training session and saves the |
| training data and then goes to sleep mode. Charge |
| the training computer. For more information, see |
| Training Computer Battery (page 9). |
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The training computer display is blank | The training computer battery is empty and it has |
| gone to sleep mode. Charge the training computer. |
| If the battery is totally drained, it may take a while |
| for the charging animation to appear on the |
| display. For more information on charging the |
| battery, see Training Computer Battery (page 9). |
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Check heart rate sensor! is displayed | • Make sure the heart rate sensor strap has not |
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| loosened during exercise. |
| • Make sure the electrodes of the heart rate sensor |
| are wet. |
| • Make sure the electrodes of the heart rate sensor |
| are clean and undamaged. |
| If you have done all of the |
| actions, and the message still appears and heart |
| rate measurement does not work, the battery of |
| your heart rate sensor may be empty. For further |
| information, see Batteries (page 51). |
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Check speed sensor! is displayed | Make sure the position and distance of the sensor |
| to the magnet are appropriate. If the message still |
| appears you may have exceeded 3000 riding hours |
| and the battery is empty. |
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Check cadence sensor! is displayed | Make sure the position and distance of the |
| cadence sensor to the crank magnet are |
| appropriate. If the message still appears, you may |
| have exceeded 3000 riding hours and the battery |
| is empty. |
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Check stride sensor! is displayed | Make sure the sensor is correctly positioned on |
| your foot. If the message still appears, the battery |
| may be empty. See the user manual for Polar s3+ |
| stride sensor for instructions on changing the |
| battery. |
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The heart rate reading becomes erratic, extremely | • Make sure the heart rate sensor strap has not |
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high or shows nil (00) | loosened during exercise. |
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| • Make sure the textile electrodes in the sports |
| apparel fit snugly. |
| • Make sure the electrodes of the heart rate sensor |
| strap are moistened. |
| • Make sure the heart rate sensor is clean. Strong |
| electromagnetic signals can cause erratic |
| readings. For further information, see |
| Precautions (page 52). |
| • If the erratic heart rate reading continues despite |
| moving away from the source of disturbance, |
| slow down your speed and check your pulse |
| manually. If you feel it corresponds to the high |
| reading on the display, you may be experiencing |
| cardiac arrhythmia. Most cases of arrhythmia are |
| not serious, but consult your doctor nevertheless. |
| • A cardiac event may have altered your ECG |
| waveform. In this case, consult your doctor. |
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Important Information | 57 |