My Little Giant APCP 1700 stopped running even when submerged. Now its stuck in a continuous run mode after I played around with the automatic float stick position. Why is it stuck in this run mode?

goto https://www.youtube.com/results?search_query=Little+Giant+1700+APCP%2C and select from the available videos you find there

Check the suction side and see if it is clear to allow water flow.

i get calls on this from time to time , heres what ive found to be cause in a few in past

breaker that feeds outlet that pump is plugged into has tripped

the auto sensor points on pump motor cover are covered up with slime and leaves

pump impeller is clogged with leaves and tree fallings

im betting this ones got a load of stuff in the suction screen and maybe inside housing as well , sure sounds as if pump is cutting off from thermal shut off too me

Hi,
The float switch went bad... probably because of the water...you could replace it, but the parts are hard to get and with the time involved it will be easier and cheaper to replace it...

heatman101

Assuming that your pump has a built in float switch, I would suggest that the float switch is frozen, stuck or damaged. If you have an underwater pump that does not have such a switch then it probably is designed to only be used manually. I have a little giant pump which is designed to go underwater but must be plugged in to use and unplugged to stop. I'm assuming you have had this pump a while and in the past has always worked automatically. Again , if yours is automatic, it's the switch. Unless it's a simple thing like a frozen arm, I doubt you can fix it unless you can replace the entire waterproof assembly without tearing into it. It must remain waterproof to be electrically safe.
You may find that only a factory repair will be the proper solution.
Nimsgame

Check your float it may be stuck causing the pump to keep running.

i want to cover my pool with automatic cover .

A motor shop can get you parts or rebuild it for you, If it is just a impeller it's probally pretty reasonable and then you have a spare.

Sometimes around the area of the motor there is a little button that is usually red that is made to "trip" if the pump got hot or overloaded. Push this button back in to reset if it has on. Most pumps have this button to keep them from burning up if overloaded.