Water level may be too low
Fill the spa with water level at 4 to 6 inches from the top.
The filter cartridge may be dirty
Clean or replace the filter
The pump may have airlock
Remove airlock by priming the pump
Wall suction or skimmer may be blocked
Remove blockage by cleaning wall suction or skimmer
Gate valves are closed
Open the gate valves.
WARNING – Never operate your spa with the gate valves closed!
There may be an air leak in the suction line
Contact your dealer for service
There is debris inside the pump
Contact your sealer for service
Motor is worn out or damaged
Noise may be a sign of damage or age. After you have tried all other troubleshooting, contact your dealer for service