Before leaving for a dive trip, inspect your dive computer thoroughly to make sure everything is functioning properly. At the dive site, perform your manual pre-checks on each device before entering the water.
Your dive computer should show a depth reading of 0.0m before entering the water and starting the dive. In some cases, your dive computer may show depth variations of several tens of centimeters (e.g. 0,3m) before diving which are normal. The variation may be caused by the reference pressure (so-called offset pressure) not being yet updated to the current ambient pressure level of your surroundings.
To ensure your dive computer updates the reference pressure, let your watch go into idle (watch mode without seconds displayed in the screenshot below) or fast standby mode with inactive water contact (blue waves icon). Your dive computer should automatically update the reference pressure and correct the depth reading after several minutes.
Check your dive computer regularly during a dive. If you believe or conclude that there is a problem with any computer function, abort the dive immediately and safely return to the surface. Call Suunto Customer Support and return your computer to an authorized Suunto Service Center for inspection.
If you see an error message in the screen call Suunto Customer Support and return your computer to an authorized Suunto Service Center for inspection.
Learn more about dive safety with your Suunto dive computer.