I just bought a used 2004 Hot Springs Prodigy. Wired for 230V. I filled with water, turned on the pump breaker, ran the pump to get any air out. Noticed the power and ready lights started flashing. I turned off the power, gave it 30 sec. per the manual, tried again, same thing happens after about 10 sec. Both lights start flashing. Filters look clean. What should I check to fix this? Funny, the last owner never mentioned this and the tub wasn't wired so I never saw it working. Hoping I didn't buy someone else's problems.

Thanks in advance.

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The circulation pump is air locked. You have to turn the tub off and put your garden hose through the filter. Specifically the one with the grey cap. Take the cap off and put your hose as far down as it can go. Running the main jet pump does nothing to help purge the air out from this pump.