While you're here, grab this too: The same cycle map method, built for the ice maker inside the home refrigerator: fill, freeze, harvest and bin full, with the parts to test in order and the reading you should see. No more guessing whether it's the valve, the module or the board when a homeowner says the fridge stopped making ice.

One more for the truck: The stage map method applied to flaker and nugget ice machines, the ones hospitals, clinics and drink stations run all day, with each component tested in order of probability. These machines don't cycle like a cuber, so you stop treating them like one and find the stuck stage on the first visit.

Take this one along too: The same stage-by-stage method for the walk-ins and reach-ins sitting next to the ice machine: cooling, defrost and restart, with the parts in order and the reading you should see. When the kitchen calls about a warm box, you find the stuck stage instead of condemning a compressor on a guess.