Coleman Steel pump GFI plug question

ICKIER

New member
May 16, 2025
4
Virginia
It is not in the manual and I can’t find an answer online.
My Coleman Steel 22’ above ground has a pump with a yellow button, red button, and a black button. It has 5 red lights to where the black button can be pressed to select 2, 4, 6, 8, or 10hrs.
Self explanatory? NO!
If I select 4 hours it runs for 4 hours and stops. Nothing more.
I did SOMETHING to where I selected 8 and it ran. Next day I went out and it was running again.
Is it designed to run the selected hour and stop until you turn it back on or is there a way to select an hour setting and it continually starts and stops at a prescribed interval?