Err FL
Autotrol
Flow rate out of range or inconsistent meter signal
Display shows “Err FL” or “Flow Err” when water is running
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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
Partially blocked meter, Intermittent meter cable connection, Wrong meter size programmed, Turbine worn or damaged
How to Fix / Troubleshooting
Safety: Shut off water and relieve pressure before removing the meter.
- Clean meter: Remove the Autotrol turbine flow meter and clean any debris or scale from the turbine and housing.
- Inspect cable and connector: Check the meter cable for cuts or loose connections. Reseat the connector at the control board.
- Verify meter size: In the installer menu, confirm the correct meter size and type are selected for your plumbing and meter assembly.
- Replace turbine: If the turbine blades are worn or broken, replace the turbine flow meter assembly.
- Test under flow: Restore water and run multiple fixtures to simulate high flow. Confirm the error does not reappear.
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Repair Difficulty
Medium
3/5
Required Part
Autotrol turbine flow meter assembly
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