Measurement failed - WaterGuru SENSE stops doing daily water measurements

If your WaterGuru SENSE stops performing daily water measurements, you should first check Supply Levels and Battery Strength before proceeding to the step to clean the SENSE optical windows.

Supply Levels

• Launch the app and scroll down to Supply Levels and Battery Strength 
• If Supply Levels show 0 left, it is time to change the cassette.
• Always check to see that the unit has a cassette inserted and that the cassette is fully inserted
• Note:  After you insert a new cassette, be sure to go to App, tap on Replace Cassette and select "Replaced".  Supply levels will be updated in the App after the next scheduled water measurement.

Battery Strength

• Check the Battery Strength, it should show at 50% or higher.  Weak batteries may not be able to power the motor that turns the pads in the SENSE Cassette causing "Measurement failed" errors.
• Winter usage:  If you choose to keep your SENSE in the pool skimmer during the winter when the pool water temperature may dip into the 50's or 40's, you will need to change the batteries more frequently. 
• If the batteries are weak and the SENSE is in very cold water, you may experience failed measurements and/or Wi-Fi network disconnects.

Optical Window obstructed

Daily water measurements can also stop if debris or contaminants are blocking the optical window of the SENSE lab unit (suspended in the water skimmer) preventing the unit from reading the pads correctly. The obstruction is usually caused by small debris, pollen, fine particulate matter, twigs, bugs, leaves or other debris or contaminants in your skimmer.  See here for more information: Debris and Contaminants

Perform the following troubleshooting: 

1. Remove the SENSE from the skimmer
2. Ensure that the skimmer is clean - without any debris.  If there is debris, clean it out of the skimmer before proceeding.  If your skimmer periodically fills with debris, you will need to check the skimmer occasionally to ensure that there is no debris in the skimmer or the device will stop measuring.
3. If you are using a mesh bag, remove the mesh bag.  The mesh bag is no longer required unless your pool skimmer regularly fills up with a lot of fine particulate matter and you do not clean the pool skimmer on a regular basis.  If you need a mesh bag, one can be ordered from WaterGuru.  
4. Remove the cassette from the SENSE lab unit
5. Check the bottom of the lab unit for any debris.  If there is any debris, remove it 
6. Using a clean cotton cloth dampened with water, wipe the optical window(s) clean
7. Replace the cassette so that it is fully inserted
8. Replace the SENSE in the skimmer ensuring that the metal strip on the lab unit is pointing toward the pool and not toward the back of the skimmer

Ensure the water pump is turned on and do a "Measure Now" in the app.  If you are within 6-10 feet of the SENSE, the measurement will complete in about 13 minutes.  If you are not within 6-10 feet of the SENSE, the measurement will complete in about 45 minutes.

If you have completed the above troubleshooting steps, and are still experiencing problems with daily water measurements, there may be a problem with your device, click here to submit a Support Request

You can also contact us by phone Monday to Friday from 9:00am - 6:00pm PST at 1-844-989-4878.  WaterGuru Support can check your device remotely for further troubleshooting. 

SENSE Optical Windows