Turn on the power, 4 lights (Power, Ozone, High Blow and Timer) will be on and running for 5mins.
If you do not need Ozone, press O, the light will be off.
If you need to keep running for 10 mins, Press T once. For 20 mins, Press T one more time.
If you need high rhythm, press H, the H light will flash on.
For low blow, press L, the light will shift from H to L. For low rhythm, press L again, the L light will flash on.