Test run - win!

How do the orange/white lights work for switching your elements on/off. Is orange off and white on? Why did you go the 2 light route?

Cheers,
Jeff

White = selected
Yellow = element on

The white is more bling than anything else, but it's a good affirmation that everything is working as it should.

Actually the nice solid "chunk" of the coil relay engaging is equally satisfying

Very nice! Are you able to run all elements at the same time (useful if doing back to back batches)?

Nope nope. Have a 40A supply to the shed, but designed/built control panel to 32A (& 32A RCBO in panel).

I can only run one of the elements at a time. Got the contactors wired up to a) only allow a single element at a time, and b) alarm if I switch both on at the same time (had fun working out the correct combo of NC/NO blocks for that).

Built out the panel with the option to include a (separate) 2400w HX that can run at the same time as the HLT, but I'd have to downgrade the HLT back to the 3500w to stay within load capability (ideally < 26A). The lights/switch above the mash pid are just place holders.

looks amazing! what's the blue screen down the bottom? and any reason you went with electromechanical vs SSR's?

Blue screen = Volts/amps (232V drawing 22.1A)

As for relays, have both. The SSRs are used by the PIDs for switching. The mechanical relays are controlled by switches on the front panel and sit between the SSR and the element. Basically, the mechanical relays are for element select, the SSRs are for element control.