Screen Displays "AO", "U1.0", and "OFF" Upon StartupUpdated an hour ago

If your Chiller 2.0 displays "AO", then "U1.0", and finally "OFF" when you plug it into an outlet, this is completely normal behavior and does not indicate a defect.

What This Means

When the Chiller 2.0 is first plugged into a power outlet, the display automatically runs a brief startup boot sequence:

1. AO — System self-test / initialization.

2. U1.0 — Firmware version display.

3. OFF — Standby mode confirmation (the unit has power, but the compressor and pump are not engaged yet).

How to Turn On the Chiller

Once the screen reads "OFF", simply press the Power Button on the front display once.

This will wake the chiller from standby, start water circulation, and activate the cooling process.