I hope this helps...
First thing you do is press the program button this will take you to the first program time. (see pic below)

Next make sure that it is set for all days of the week this is done by pressing the day button repeatedly until all days are lit up across the top (see pic below)

Next make sure that the AM or PM is correct and that the time is when you want the mist to turn on. This is done by pressing the hour and minute buttons. Note: if you want 7PM instead of 7AM you have to press the hour button to pass 12 noon and hit 7 again. I hope that made sense ha ha (see pic below)

Now it is time to set the time you want the mist to stop (the issue you are having) press the big grey button and this takes you to the off time screen. Adjust the day and time as described above. Remember to make sure it is AM or PM correctly and that it is set for all days of the week. Otherwise the pump will start but not shut off until the next day!!! or next program time. (see pic below)

Once you have the start time and end time for program one done hit the program button to go to the next program. Follow the steps again and set the on and off day and times. I suggest you set it to go off for 1 minute every 2 or 3 hours depending on how quick the leaves dry up. (see pic below)

Finally you will have one healthy, happy, hydrated cham. Say hi to Leon!

