Help AC filter not working

[dvanv]

I have a 29 gallon tank with a AC50 which has been set up for about five months. The setup and filter were new. I went out of town and when I got back the filter was humming but not working. I took it all apart and couldn't find anything that would make it stop working. I replaced the motor unit and it worked but now that unit is humming and not working.
Has anyone had a problem like this? Do I need to replace the entire unit?

[HN1]

Have you tried to fill it with water as it's "humming"? Sometimes mine will lose prime after being off and need to be filled. Did you have a power outage while you were gone?

[dvanv]

I tried to fill it with water while it was humming but nothing happened more than the humming. No power outage I have asked the neighbors to double check and nothing.

[neilanh]

Did you check to make sure a pebble or something isn't jamming the impeller?

[dvanv]

Nothing restricting the impeller. I have pool sand in the tank. I think I am running out of choices.

[HN1]

Does the impeller turn? Have you tried to reseat it?

[dvanv]

Do you mean reseat it by taking it out and putting it back in? I did that a couple of times. The impeller does turn.

[HN1]

I'm honestly stumped. Sorry. If you figure it out, please let us know. I'm really curious now!

[partypalooza5]

Maybe the impeller is somehow bad?

[dvanv]

I think if I get this running it will be an accident. I just don't want to go and buy something right now. I will keep trying and see what happens. Thanks for all of the ideas.

[HN1]

Good luck! You may want to check this link out. May not help, but can't hurt.

Troubleshooting Hang-On Power Filters

[woofer00]

mine stalled after a power outage and ran dry for a few hours, wouldn't prime when i first flipped out. swabbing and wiping the impeller didn't help, but i noticed that it was hot to the touch, so i detached the burning hot pump and threw it in the fridge for half an hour, reconnected it, and it started on the first try.

[dvanv]

I had it runnning since Saturday and now I find it not running once again.
I give up!