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George FieldsAug 13, 2025
What to do if the Sullair SUPERVISOR Controller shows 'Main Motor Overload'?
- RrileybrookeAug 13, 2025
If the Sullair Controller displays a 'Main Motor Overload' error, reset the overload after the heater element cools down. Also, ensure the compressor is properly configured and the load pressure is set below the compressor's limit. Check the motor starter contacts for proper operation and verify the line voltage, consulting the power company if it's low.