Why is my NObreath device constantly giving readings of 0ppb?
This is an issue that occurs when the drying cartridge is missing or disconnected. To fix this, take the service hatch off, check that the drying cartridge is present and fully located into the device, then just re-close service hatch.
This could be a result of your pump not running correctly, you will need to charge your device fully to correct your pump. Please ensure the mouthpiece was connected properly during the test and didn't disconnect and keep all vent holes clear when performing a test.
Alcohol contaminations will affect the Nitric Oxide electro chemical sensor inside the device. Ensure no VOC's are used on the device and accessories related to the device, this includes any alcohol based products and spraying any aerosols/room spray near where the device is used.
You should also try checking that NO scrubber is present and fully located in the device.
If the problem persists or has not been resolved by the information provided above, please contact Bedfont or your local distributor for more advice.