My Zwift Hub (device ID 686B) has suddenly stopped transmitting power and cadence data

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1

My Zwift Hub (device ID 686B) has suddenly stopped transmitting power and cadence data.

Symptoms:

  • Bluetooth LED flashing blue

  • Trainer is visible in BLE scanner apps

  • Firmware update completed successfully

  • Zwift can sometimes pair it as Power Source and Resistance

  • Cadence remains stuck on “Connecting”

  • No power values are transmitted, so my avatar doesn’t move

  • Same behaviour on multiple devices

I’ve already:

  • Power-cycled the trainer multiple times

  • Rebooted devices

  • Reinstalled Zwift

  • Updated firmware

  • Tested on more than one device

I’ve opened a support ticket but haven’t received a response yet. Has anyone seen a similar failure mode, and was there a fix other than replacing the trainer?

Thanks.

2

Have you tried pairing it to something else (not Zwift) to see if you get any signal from it? A cycling computer or Garmin watch would be high on the list if you have anything like that. A lot of them can be set up for indoor riding to test a trainer.

If you get nothing from it with any app or device then my guess is it’s toast, and presumably out of warranty. None of the electronic parts are available for it.