Performing a Self-Test can quickly diagnose problems with the Power Meter.
Perform a Self-Test by back-pedaling several times, and then observe the LED.
- No flash: Dead battery, or magnet not installed.
- 1 flash: Self check pass. Head unit paired.
- 2 flashes: Self check pass. No head unit paired.
- 3 flashes: Self check Fail. Reed switch Failure.
- 4 flashes: Self check Fail. Bad Strain Gauge.
Power Meter does not pair with the computer
- Check the battery. The battery must be installed correctly ("+" out) and have sufficient charge. Make sure the battery contact is free of corrosion.
- Check the magnet position. Confirm the magnet is within 2-8 mm (1/16"-3/8") of the sensor. The magnet should be installed according to the instructions in the Quarq Power Meter User Manual. Once the cadence sensors have been activated, the power meter will begin transmitting messages and is ready to be paired.
- Make sure the proper pairing technique has been followed for your bike computer. The pairing process will vary by manufacturer. Refer to your bike computer's instruction manual.
- If you are using a Garmin bike computer with ANT+™ heart rate enabled, calibration will often be faster when you are wearing the heart rate monitor/strap. Turn off the ANT+ HRM function if you are not using a heart rate strap.
- Check with Quarq for the recommended firmware version for your Garmin computer. Follow the instructions specific to your ANT+ computer to check the installed firmware version:
Garmin Edge® 800
Menu › Settings › About edge
Garmin Edge® 500
Menu › Settings › About edge
To view the menu, you must press and hold the Menu button until the menu pops up.
Garmin Forerunner® 310XT and 910XT
Mode › Settings › About Forerunner
Cadence, but no power
- Check the magnet position. The magnet should be installed according to the instructions in the Quarq Power Meter User Manual. Zero the power meter using Auto Zero or Manual Zero as described in the manual.
- Remove any separate cadence or speed sensors.
Unusually high or low power values
- Perform the Manual Zero as described in the Quarq Power Meter User Manual.
- If the Manual Zero is well outside +/- 1000, check pre- and post-ride Zero Offset values.
- If the pre- and post-ride Zero Offset values differ by more than 50 points, it may be necessary to contact Customer Support. Keeping a record of the Zero Offset values will be helpful when contacting Customer Support.
With a new power meter or newly installed chainrings, the zero offset takes 2-3 rides to stabilize. During this time you should perform the Manual Zero procedure regularly to ensure accurate power readings. Short, hard efforts in both chainrings on your first ride will speed up stabilization.
- Remove third party cadence sensors. The power meter delivers both power and cadence data to the bike computer.
- Inspect and clean the chainrings and power meter, including the chainring mounting tabs. Re-assemble according to the instructions in the Quarq Power Meter User Manual.
Manual Zero (Calibration) Fails
- When performing the Manual Zero procedure, make sure that the drive side crank arm is at the 6 o'clock position, there is no weight on the pedals, and the cranks are stationary.
- If you are using a Garmin bike computer with ANT+ heart rate enabled, calibration will often be faster when you are wearing the heart rate monitor/strap. Turn off the ANT+ HRM function if you are not using a heart rate strap.
Wireless Signal Disconnections
- Check the magnet position. The magnet should be installed within 2-8 mm (1/16"-3/8") of the sensors, according to the instructions in the Quarq Power Meter User Manual.
- Make sure the magnet is clean and free of debris.
- Check and replace the battery in the power meter and/or bike computer.
- Make sure there is no moisture in the battery compartment.