Garmin International Inc 01891 Manuel D’Utilisation

ANT+ Sensors

I changed the 

battery in my 

accessory.

You must pair the sensor to your Forerunner again (

). 

The heart rate data 

is inaccurate or 

erratic.

•  Make sure that the heart rate monitor is snug against 

your body.

•  Warm up for 5–10 minutes.

•  Reapply moisture to the electrodes. Use water, saliva, or 

electrode gel. 

•  Clean the electrodes. Dirt and sweat residue on the 

electrodes can interfere with heart rate signals.

•  Wear a cotton shirt or wet your shirt if suitable for 

your activity. Synthetic fabrics that rub or flap against 

the heart rate monitor can create static electricity that 

interferes with heart rate signals.

•  Move away from sources of strong electromagnetic 

fields and some 2.4 GHz wireless sensors, which 

can interfere with your heart rate monitor. Sources of 

interference may include high-voltage power lines, 

electric motors, microwave ovens, 2.4 GHz cordless 

phones, and wireless LAN access points.