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These VS pumps are VERY VERY sensitive to power black outs, brown outs, spikes and whatever... Do you have a Surge device on your electrical box for the pump power.. These VS really should have one... I have one on my pump electrical panel, one for my whole house and one on my AC unit and multiple inside ones for computers and sound equipment...
With that said it is probably just the brains that are fried but I am not sure and I have no idea how to test those...
I can help with the surge protectors
For your pump panel
Amazon.com: Intermatic AG3000 120/240 VAC Universal HVAC Surge Protective Device, Color: Home Improvement
smile.amazon.com
For your AC/furnace/heat pump or whatever
Buy ICM Controls ICM493 Single Phase Monitor with Surge Supression, Multicolor: Surge Protectors - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
smile.amazon.com
Whole house
Buy EATON CHSPT2ULTRA Ultimate Surge Protection 3rd Edition, 2.38" Length, 5.25" Width 7.5" Height: Surge Protectors - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
smile.amazon.com