Unit will not run, control shows lowercase 'b' and ice production is stopped

Safety first: Disconnect power to the ice maker before reaching into the bin or accessing internal components.

This code usually indicates the bin is full or the bin thermostat/switch is satisfied.

• Check ice level: Open the bin and remove excess ice. Make sure ice is not packed tightly around the bin thermostat bulb or bin switch arm (if equipped).
• Inspect bin thermostat bulb: On many Scotsman undercounter units, a sensing bulb or probe is mounted near the top of the bin. Ensure it is securely mounted, not buried in ice, and not damaged or kinked.
• Reset power: After clearing ice around the sensor, restore power and allow the unit to cycle. The 'b' indication should clear once the thermostat warms up.
• Check bin switch alignment: If your model uses a mechanical bin switch, verify the actuator arm moves freely and is not stuck in the "full" position. Adjust or tighten mounting screws if the switch is misaligned.
• If the unit still shows 'b' with an empty bin: The bin thermostat or bin switch may be stuck closed or the control board may be faulty. At this point, testing continuity of the bin thermostat/switch with a multimeter is recommended. Replace the defective component if it does not open when warm.