help with avent sterliser machine please...

[missytequila]

my bottle sterliser keeps flashing a 'U' symbol and beeping...does anyone know what this means? i have lost the box/instructions...please help. thanks

is it the 24 hour one? According to the manual (found online), 'U' means insufficient water. It says this:

Insufficient water has been placed in the steriliser. Switch off, remove water, (take care if the steriliser body is hot) and replace with 90ml of water for use with Mode 1 OR 200ml of water for use with Mode 2. Restart the unit

24 hour steriliser