just replaced the filters on my bluevua ro100ropot and now it won't start at all, the button does nothing

The filter lifespan indicators were not reset after replacement. The system locks until you complete the reset process.

1. Turn on the power.
2. Find the reset toggle switch behind the panel.
3. Pull and hold it for 5 seconds to enter filter selection mode. The No. 1 filter indicator will flash.
4. Press the banana-shaped water volume button to cycle between different filter indicators.
5. Pull the reset toggle switch again to complete the reset.
6. Restart the system. You must then run the pure water-making process 3 times to flush out the protective liquid in the new filters before drinking.

If that didn't work, ensure all four filters (PP, CTO, RO, PCF) are fully inserted from left to right. Twist each counter-clockwise until you hear a click and the triangle icons align. A loose filter will prevent operation.

After resetting, the filter life reminders are active: PP/CTO/PCF at 12 months, RO at 12-24 months.