NightOwl App - Error Code 02 (ECO2)

Find out what this error could mean for your sleep test.

Uh oh! Looks like there were some problems with last night’s sleep test. Not to worry, let’s walk through on how we can fix this.

  • Insufficient phone battery

 Your phone could have run of battery or turned off during the sleep test. It is vital for your phone to be ON in order to maintain Bluetooth connection with your device. Make sure your phone is charging for the duration of your sleep test.

  • You could have turned your sensor OFF

 It is possible that you manually turned OFF the sensor before we were able to collect enough data for the sleep test. We need you to sleep with the device for at least 4 hours in order to provide an analysis of your sleep. 

  • NightOwl Companion app keeps shutting down

The NightOwl Companion app is repeatedly shut down by your smartphone. You can avoid this issue by using an alternative smartphone or tablet. Open the instruction email we sent you on your new smart device. Follow the steps in the email to download and configure the app. You should be able to continue your home sleep test for the remaining nights.

Need more support? The ResMed team would love to have a chat with you! You can reach us on 1800 737 633. Alternatively, you can email us on