Rachio 3 & Hunter PSR 22 problem

I recently converted my irrigation controller to a Rachio 3. I use an irrigation well/pump connected to a Hunter PSR-22. I have ran the system over several weeks without problem as we upgraded heads.

Yesterday my PSR started buzzing very loud when starting a zone. After killing power at the breaker panel I inspected the PSR and discovered a colony of ants.

I’ve watched a video from Rachio that stated Rachio 3 needs a Munro PSR, but don’t recall ever seeing that on their product page.

Will the Rachio 3 work with a Hunter PSR-22 or did the ants cause the failure?

Need to fix quick to keep the grass green and HOA happy!

Thanks for your help!