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YB3i Troubleshooting and Maintenance
YB3i Troubleshooting and Maintenance
Keryn McMaster avatar
Written by Keryn McMaster
Updated over a week ago

YB3i Troubleshooting and Maintenance


If something isn’t working correctly with your YB3i:

  1. Ensure the unit is powered, and any connections in the circuit are good ( check boat wiring, switches and fuses)

  2. Measure the power of the incoming cables with a multimeter, it should be between 12 and 24v.

  3. If you have power to the unit, then try swapping the wires over to reverse the polarity. This will not damage the unit, as the device is protected.

  4. Hardware reset the device by swiping the reset magnet all the way around the outside edge of the unit. If you have misplaced the supplied magnet any other magnet will be suitable. The unit will beep after about 10 seconds, and will then be reset.

  5. If the first 4 steps have no effect you may have to do a full power cycle of the unit, this is done by removing the unit from power and then doing a magnet reset. Once complete you should hear a downward tone. Leave the device for 20 minutes and then return the unit to power, you should hear an upward tone, then try the unit again.

  6. If none of the above work, then please get in touch with the support team, using the details below.

LED light Indicators:

There is an LED indicator on the bottom of the unit, and this LED indicates the status of the YB3i unit.

Solid Green – unlimited power mode( all the modems are on 24/7), running on external power
Intermittent Green – unlimited power mode, running on battery
Solid Red – limited power mode (the modems in the unit sleep between transmissions), connected to external power

Intermittent Red - limited power mode, running off internal batteries
Off – in shipping mode, stealth mode, or the battery has run out and there is no external power

Replacing the Battery

Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced. The device battery is not user-replaceable; it can only be replaced by your device service provider.

Having said this, the battery in the device should maintain its ability to charge to at least 90% of capacity through 1000 charge cycles. This means that if you charged the unit every day (unlikely) the battery would need to be replaced every 3 years. If you charged the device once a week, it would need the battery replacing once every 10 years. However, you do not need to worry about this issue if you have the unit connected to the yacht’s batteries 100% of the time. With a power draw of only 350 milliamps, your house batteries will only go flat if left unattended for a very long time.


To clean your device, use a soft slightly damp cloth to clean any dirt. Do not use alcohol or abrasive substances to clean your device.

Help desk and Support Details

For assistance, please contact the PredictWind support team – it would greatly help us if you provided the following information:

Name and contact number
The serial number of the Device (see serial number label)
Symptoms of the fault
History of action taken to attempt to rectify the fault

Please remember that the more information you can give us, the better we’ll be able to help you.

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