Peloton Heart Rate Band Setup 

If you are experiencing a "flashing red light" issue, try leaving your device on the charger for a few hours. This solution has a success rate of 99.99% in resolving the problem.

we have 2 of these, both arrived dead steer clear of this product!

Mine too. Just the single red led. Submitted claim, Peloton sent another one - it does the same thing.

Peloton does not stand behind their product. This is a common issue, as you tell from all the comments. Zero response from Peloton. I purchased two of these back to back. SINGLE FLASHING RED LIGHT. Customer service lies and don't know what they are doing. They love to sell you but when it comes to service, You are on your own.

When I charge mine the single red light blinks and then there aren't any lights. What's happening