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Surging and Flashing Lights on Circuit Board


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We have a 2002 Great Lakes Spa. Water level is good, filter is clean, but jets continuously surge and we noticed a clicking from circuit board. Where the click is light shines/sparks.  Sorry, I'm not very techy with my terms, just trying to alleviate some frustrations for my husband.  It sat for a couple days unplugged and when it started back up it heated up and ran fine for 10 minutes until he pushed the jet button twice.  

Thanks for any suggestions or help you can provide.  I shared the video with one hot tub store and they said it was the circuit board...

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Low water level, suction side leak, broken check valve, clogged filter. Just off the top of my head.

Remove filters and try again.

Get in (if it's not too cold) and check for suction at the grates in the footwell. One should be pulling in water when the pump is flowing. (There are ways to check without getting in, if necessary)

Turn off power and look for leaks that weren't leaking when it was on.

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On 3/22/2021 at 10:12 PM, RDspaguy said:

Low water level, suction side leak, broken check valve, clogged filter. Just off the top of my head.

Remove filters and try again.

Get in (if it's not too cold) and check for suction at the grates in the footwell. One should be pulling in water when the pump is flowing. (There are ways to check without getting in, if necessary)

Turn off power and look for leaks that weren't leaking when it was on.

How do you unclog internally?

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