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 physician.
…Check heartrate sensor! is displayed and your training computer cannot find your heart rate signal?
• Make sure the heart rate sensor strap has not loosened during exercise.
• Make sure the electrodes of the heart rate sensor are moistened.
• Make sure the electrodes of the heart rate sensor are clean and undamaged.
If you have done all of the above-mentioned 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 Important Information (page 45).
...Calibrationfailed is displayed?*
Calibration did not succeed and you need to re-calibrate. Calibration fails if you move during the process.
Once you reach lap distance, stop running and stand still for calibration. The range of the calibration
factor during manual calibration is 0.500-1.500. If you have defined the calibration factor below or above
these values, calibration fails.
*Optional s3+ stride sensor required.
ZoneOptimizer determination fails?
• Make sure that the electrodes of the heart rate sensor are moistened.
• Make sure the heart rate sensor strap has not loosened during exercise.
• Make sure the heart rate sensor electrodes are clean and undamaged.
• Make sure you have followed the instructions carefully.
If you have done all of the above-mentioned 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 Important Information (page 45).
Limited International Polar Guarantee
• This guarantee does not affect the consumer’s statutory rights under applicable national or state laws in
force, or the consumer’s rights against the dealer arising from their sales/purchase contract.
• This limited Polar international guarantee is issued by Polar Electro Inc. for consumers who have
purchased this product in the USA or Canada. This limited Polar international guarantee is issued by Polar
Electro Oy for consumers who have purchased this product in other countries.
• Polar Electro Oy/Polar Electro Inc. guarantees the original consumer/purchaser of this device that the
product will be free from defects in material or workmanship for two (2) years from the date of purchase.
•The receipt of the original purchase is your proof of purchase!
• The guarantee does not cover the battery, normal wear and tear, damage due to misuse, abuse, accidents
or non-compliance with the precautions; improper maintenance, commercial use, cracked, broken or
scratched cases/displays, armband, elastic strap and Polar apparel.
• The guarantee does not cover any damage/s, losses, costs or expenses, direct, indirect or incidental,
consequential or special, arising out of, or related to the product.
• Items purchased second hand are not covered by the two (2) year warranty, unless otherwise stipulated by
local law.
• During the guarantee period, the product will be either repaired or replaced at any of the authorized Polar
Service Centers regardless of the country of purchase.
Guarantee with respect to any product will be limited to countries where the product has been initially
marketed.
ENGLISH
Important Information 51