Just received a blue diamond cleaner, and haven't gotten it to work. When I put it in the pool, the propeller works for about one minute, the unit doesn't move at all, and then after one minute it shuts off. It's not the electrical outlet. I cycle it on and off several times, it always shuts off after a minute, without moving. Before I send it back, and since customer support is closed right now, just wondering if anyone had any similar experience with it. Thanks.