Pump was fine but now turns on and off after just seconds of use. What could be the problem?

No, this pump does not natively turn on and shut off based on pressure. You need to add a pressure switch and tank. Flotec has the manual for the FP5172 here: https://www.pumpagents.com/pdf/FlotecPumps/Flotec-FP5172.pdf .

I hope this helps.

Cindy Wells

You may want to check with Flotec first since many of the manufacturers handle warranty claims directly instead of the store being involved. If the unit falls within the stores return period then just take it back and excahange/return it...if not, Flotec is at: http://www.flotecpump.com/ResidentialContactUs_ContactUs.aspx

Select warranty from the drop down menu and go from there.

John

Same pump, same problem. H/D sells the pumps, but no parts. Here's a link to a vendor of Flotec parts. http://www.pumpvendor.com/Flotec_Parts_List.html

fully submerse pump in bucket of water, tilt to get all air bubles out,(keep hose off) plug in and it should work fine

Clogged, Impeller loose and not turning. Remove strainer from bottom of pump and check for clogg and see if the impeller is turning.

this pump needs about 21/4" of water to operate properly, this pump will not remove all the water from the cover and will cycle on and off as it looses prime. If the motor turns completely off, it may be a an issue with low line voltage. you can try using a lager gauge extension cord to try and fix it, otherwise have an electrician test the line voltage.

Here is a pdf of the manual:
http://ec1.images-amazon.com/media/i3d/01/A/man-migrate/MANUAL000049529.pdf

it might be that the pump is prewired at 230 volt and you are running a 115 power supply to it, if motor just humms and little water comes out this might be your fix

Remove end casing of Flotec motor housing they have a 115v/220v switch, turn to 220v, see website flowtec water. Flotec parts 1-800-365-6832

sounds like air is trapped in the system somewhere. that is why any pump will surge. check the lines going in to make sure it isn't sucking air somewhere along the way and make sure the discharge line is clear so it can pump out fully.

IT SOUNDS AS IF THE PUMP IS NOT PRIMED. MAKE SURE THE THE PUMP IS FUL OF WATER