Defective 2477d?

Just bought a 2477D and once wired up, it will power a light but doesn’t at all respond to the paddle controls. Replacing it with another unit (same model, different rev) worked perfectly. Any chance this is a known issue with a solution - or is it defective?

You can try pulling the air gap switch to reset it, but if that doesn’t work I would just exchange it. Sounds defective.

Indeed it was defective. Thanks!