Scotsman Ice Maker Error B
⚡ Quick Answer: The Scotsman ice maker error code 'B' indicates that the bin fullness sensor has been triggered, stopping ice production because the machine believes ... ✅ DIY Fixable
What Does Error B Mean?
The Scotsman ice maker error code 'B' indicates that the bin fullness sensor has been triggered, stopping ice production because the machine believes the bin is full. This issue may occur even if the bin is not physically full, leading to unusual sounds or a flashing display. To resolve this, check the ice bin for excess ice and inspect the bin fullness probe for any ice buildup that could cause a false reading.
Common Symptoms:
- Ice machine stops production when ice bin is (or appears to be) full even if bin is not physically full
- Ice maker shows a letter code on display rather than numerical fault codes
Possible Causes
- Bin fullness sensor triggered (bin full indication) (medium)
How to Fix Error B
DIY Fix Check and Adjust Ice Bin/Fulness Probe
- Ensure the ice bin is not actually full of ice.
- Remove excess ice if present.
- Inspect the bin fullness probe or sensor and gently clean it to remove any ice buildup that may falsely trigger a full condition.
- Restart the machine and observe whether the code clears.
Technician Only Service Bin Sensor and Control Diagnostics
- Disconnect power and remove access panels to reach the bin fullness sensor assembly.
- Verify correct placement and operation of the bin fullness probe or sensor.
- Use a multimeter to test sensor continuity and replace if defective.
- Check control board input for bin sensor to ensure correct signaling and replace board if necessary.
Parts needed: Bin fullness sensor/probe, Control board (if sensor input diagnostics indicate fault)
- If the bin fullness sensor tests fine but the error persists.
- If the control board inputs/outputs related to bin detection appear faulty.
- If you are uncertain about safely accessing internal sensors.
Next step
Choose the next step for B
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
- Typical part-only price
- $120 - $280
- DIY difficulty
- Medium
- Estimated time
- 20-40 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Ice Maker parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
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Technical Specifications
| wattage | 60W |
|---|---|
| component | Water Inlet Valve |
| resistance | 20-30 ohms |
| part_number | Scotsman 12-1943-21 |
| voltage_rating | 115V AC |
Common Questions
What does B error mean on scotsman ice ice maker?
B error indicates the bin fullness sensor is triggered, stopping ice production.
Can I fix scotsman ice ice maker B error myself?
Yes, check for excess ice in the bin and clean the fullness probe.
How much does it cost to fix B error?
Estimated repair costs range from $50 to $300, depending on the issue.
When should I call a technician for B?
Call a technician if the sensor appears fine but the error persists or if you're unsure about accessing internal components.
Data last verified: 2026-07-26
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