Automatic Pool cleaner not holding to the ground or floats

PROBABLE CAUSE: 

- 3/4" corrugated hose clogged or broken. SOLUTION:  Clean hose with fresh water. Replace Hose 

- System vacuum not enough 

SOLUTION:

 - Increase the suction power of your system. Increasing the valve that control the suction line (located near the pool Pump).  

- Connect firmly the TJOINT to your Suction Cleaner & check all the pool hoses are tight.