[George from New England]

I just paid for a new one, same exact module, it works 100%.

So I have conclusively pointed to module itself.

I post as many preppers might not even know that what worked off-grid last year, is secretly and hiddenly failed you.

https://www.eltwin.com/hyper/products/soft-starter-hyper-single

This is faulty design.

SS1B16-32SN (230V, 60/50Hz, 16-32 FLA)

[Red Badger]

https://gesrepair.com/what-is-a-soft-start/ Most likely one or more of the thyristors is bad.