E6
Scotsman
Low Suction Pressure or Freeze-Up Protection
Display shows 'E6' and unit will not run
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Low refrigerant charge, expansion device restriction, evaporator icing, suction pressure switch open, suction thermistor fault
How to Fix / Troubleshooting
Safety: Turn off power. Refrigerant system diagnosis must be done by a licensed technician.
- Check airflow and water flow: Ensure the condenser is clean and the water system is not restricted. Poor heat exchange can cause abnormal pressures.
- Inspect evaporator: Look for heavy frost or ice buildup on the evaporator plate. If present, defrost the unit fully and clean scale.
- Check suction sensor/switch: If your model uses a suction pressure switch or thermistor, inspect wiring and connections. Replace if obviously damaged.
- Professional diagnosis: Persistent E6 usually indicates a refrigerant issue (leak, restriction, undercharge). A technician should connect gauges, locate leaks, and repair/charge the system.
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Repair Difficulty
Professional Required
5/5
Required Part
Suction Pressure Switch
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