ERROR 3
Keurig
Water System Sensor Error
Display shows “ERROR 3”; unit may partially power but will not brew.
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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
Faulty flow meter, Disconnected flow meter harness, Control board input failure, Severe scale blocking flow
How to Fix / Troubleshooting
Safety first: Unplug the brewer before any work.
- Descale: Perform a full descale to ensure the flow meter can detect water movement.
- Power reset: Unplug for 10 minutes and retry.
- Technician inspection: Check the flow meter for proper wiring and test its pulse output while water flows.
- Replace flow meter: If no pulses are detected, replace the flow meter assembly.
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Repair Difficulty
Professional Required
5/5
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