Replaced rollers and idler. Unit checks good.

Replaced freezer lights and all checked ok.

"Customer concern, calcium deposits. Cleaned ice bin and flushed water line. Poured test glass. All checks good. To resolve issue, more maintenance and/or a more robust filtration system must be implemented."

Replaced water valve assembly. Valves functioning properly and sealing off good.

Replaced main control board and cycled to test. Vent checked good and heating properly. No other failures detected at time of service.